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Dedicated Outdoor Air Systems: Providing Optimal Ventilation and Indoor Air Quality  

Various approaches have been undertaken to conserve energy and enhance indoor comfort. Initially, the concept was to seal buildings, minimizing the infiltration and ventilation of air, thereby retaining the warm or cold air inside and reducing energy use.

Unfortunately, this method quickly showed flaws as the building occupants started to experience symptoms like dry coughs, headaches, and nasal irritations. The culprit has been the contamination within the air conditioning system.

Research has consistently highlighted the correlation between indoor air quality and human health after this revelation. As a result, the approach shifted from sealing buildings to sourcing solutions from external air i.e. Dedicated Outdoor Air Systems.

So, What Exactly is a Dedicated Outdoor Air System (DOAS)?

Judging by its name, one could assume the system is designed for outdoor use. However, having a system intended to enhance outdoor air quality wouldn’t make sense. Thus, it’s a system built outdoors to modify indoor air quality.

In essence, DOAS is an outdoor HVAC system, typically complementing other HVAC equipment. It acts as an air filter for the HVAC system, filtering the outdoor air before introducing it inside the building. As such, DOAS can eliminate outdoor air contaminants and minimize indoor air pollution.

Usually, HVAC systems must process a considerable amount of outdoor air to provide warm or cold air indoors. The high humidity of outdoor air can lower the efficiency of the HVAC. DOAS addresses this by dehumidifying outdoor air and reducing energy consumption during ventilation.

Hence, when used alongside an indoor HVAC system, a DOAS can significantly improve indoor air quality, decrease energy usage, and avoid moisture-related issues within the HVAC system.

Indoor Air Quality Begins with Proper Ventilation

CO2 management in occupied spaces is at the heart of most ventilation requirements. As people breathe out CO2, high concentrations of this gas can accumulate in heavily populated areas, potentially reaching levels as high as 2000 to 5000 ppm, compared to the outdoor average of 400 ppm. Adequate ventilation is crucial to maintaining low CO2 levels and indoor air quality.

The Power of Decoupling with DOAS

DOAS offers several benefits over central station ventilation, making it a preferred choice for many designers. These benefits include enhanced ventilation quality, decoupled energy efficiency, and better control over temperature and humidity. Traditional central air handlers and rooftop units generally mix, condition, and supply outdoor and recirculate return air to space through a single piece of equipment, with outdoor air making up a small fraction of the supplied air.

The primary issue with these systems is the need for more ability to measure or control where the outdoor air ends up. Using a DOAS unit to decouple the ventilation air from the central recirculated air ensures evenly distributed fresh air across the building.

Moreover, the decoupling process allows controlled delivery of ventilation air to only occupied areas of a facility, promoting energy savings in low- or mixed-occupancy spaces. Such precise control is unachievable with centrally distributed ventilation systems.

Furthermore, the conditioning and supply of ventilation air is typically the most energy-intensive part of HVAC systems. Extreme temperature and latent loads can overpower traditional central stations or small terminal conditioning equipment, causing temperature control issues and excessive humidity.

DOAS is specifically designed to manage the extremes of processing ventilation air efficiently. By decoupling the ventilation air from the recirculated system, facility managers can independently control space humidity and temperature using DOAS for primary dehumidification and recirculating equipment for temperature control. This method promotes thermal comfort and ensures fresh air delivery to occupied spaces.

Packaging Efficiency

DOAS achieves the abovementioned benefits by leveraging cutting-edge refrigeration, control, and energy-recovery technologies. Most DOAS units are packaged direct expansion (DX) systems incorporating efficient variable-speed or multi-stage compressors for precise temperature and humidity control. This broad range of compressor capacity modulation is crucial to maintaining optimal comfort while minimizing energy usage. Coupling variable-speed DX technology with energy recovery solutions, like enthalpy wheels, plate heat exchangers, and hot gas and liquid sub-cool reheat systems, allows for high efficiency even under challenging conditions.

As the focus on ventilation and air quality continues to grow among facility managers and building owners, a trend expected to intensify, DOAS systems are increasingly recognized as a viable choice to promote energy-efficient healthy buildings. Get in touch with DRI Rotors to keep your facilities more relaxed and comfortable than others.

Fresh Air Heat Recovery Ventilation Systems: Enhancing Indoor Air Quality and Comfort  

Reimagining the Importance of Indoor Air Quality and Energy Efficiency

Various fans and air-circulating devices offer superior indoor air quality and prioritize occupant well-being in most buildings. However, these systems often come at the cost of consuming excessive electrical energy. Recognizing the significance of clean indoor air and the need to minimize adverse health effects, exploring innovative approaches that balance indoor air quality and energy efficiency is crucial.

Understanding the Significance of Indoor Air Quality

With individuals spending an average of 90 per cent of their time indoors, ensuring clean indoor air is paramount for optimal health. Unfortunately, many homes and businesses suffer from contaminated air, which poses risks to occupants’ well-being. Volatile Organic Compounds (VOCs), pollen, radon gas, smog, mould, fumes, and odours are among the culprits that deteriorate indoor air quality. For individuals with chronic diseases, compromised immune systems, or sensitivities to mould and chemicals, indoor air pollution becomes an even more significant concern.

Energy Efficiency and Comfort Conditioning

While ventilation systems play a crucial role in maintaining indoor air quality, they often contribute to increased heating and cooling costs while compromising indoor comfort. Like opening a window to ventilate a room, traditional ventilation systems exhaust air without harnessing its thermal energy. It results in energy loss and discomfort as unconditioned air infiltrates through gaps and cracks in the building envelope, leading to drafts.

Fortunately, Heat Recovery Ventilation (HRV) and Energy Recovery Ventilator (ERV) systems offer energy-saving solutions. These systems utilize heat exchangers to transfer the heat from exhaust air to incoming air, significantly reducing utility bills. HRV units alleviate the burden on HVAC equipment, as conditioned intake air reduces the need for excessive heating and cooling, optimizing system performance.

An HRV system ensures constant fresh, filtered air for those in the building. The higher the rate of heat recovery, the greater the comfort experienced. Less efficient HRV systems may supply fresh air at uncomfortable temperatures, leading occupants to turn the unit off or use it sporadically. Such actions jeopardize indoor air quality since consistent ventilation is vital for maintaining a healthy environment.

Redefining the Paradigm: Indoor Air Quality and Energy Efficiency in Harmony

By embracing innovative technologies and approaches, we can create spaces that offer clean, healthy air while significantly reducing energy consumption. Integrating HRV and ERV systems, with meticulous insulation and air sealing measures, ensures optimal indoor air quality and superior energy performance. Together, we can foster a healthier, more sustainable built environment that promotes the well-being of occupants and minimizes our impact on the planet.

Significance of HRVs in Modern Buildings

In the modern era, buildings are becoming increasingly energy-efficient and airtight, and a fresh air heat recovery ventilator (HRV) has become imperative. These systems offer a solution to maintaining good indoor air quality while conserving energy. With the ever-increasing focus on sustainability and occupant well-being, HRVs have become crucial to modern building design. Here’s why HRVs are the need of the hour for modern buildings.

HRVs provide continuous fresh air to the indoor environment

As buildings become more airtight to prevent energy loss, indoor and outdoor air exchange naturally diminishes. Stale air can accumulate, leading to the build-up of pollutants and contaminants, adversely affecting occupants’ health and well-being. HRVs mitigate this issue by introducing a controlled stream of fresh outdoor air into the building, enhancing indoor air quality.

HRVs recover and reuse the heat energy present in the exhaust air

In winter, the warm air leaving the building preheats the incoming cold fresh air, reducing the load on the heating system. Conversely, in summer, the cool air leaving the building helps to pre-cool the incoming hot outdoor air, decreasing the demand for air conditioning. By utilizing the heat exchange process, HRVs significantly contribute to energy efficiency, lowering utility bills and reducing environmental impact.

HRVs play a crucial role in moisture control

Excessive humidity levels can foster the growth of mould, mildew, and other harmful microorganisms, compromising indoor air quality. HRVs help regulate humidity by transferring moisture from the incoming air to the exhaust or vice versa, depending on the season. This balance in humidity levels not only improves comfort but also prevents the formation of mould and other related issues.

HRVs aid in reducing the strain on heating, ventilation, and air conditioning (HVAC) systems

By pre-conditioning the incoming fresh air, HRVs alleviate the load on the HVAC system, allowing it to operate more efficiently and extending its lifespan. This results in energy savings and reduced maintenance costs over time.

In conclusion, fresh air heat recovery ventilators have become indispensable in modern buildings. They ensure a continuous supply of fresh air, enhance indoor air quality, and promote energy efficiency. With their ability to recover heat and control moisture, HRVs create a comfortable and healthy indoor environment while reducing reliance on heating and cooling systems. As sustainability and occupant well-being remain at the forefront of building design, HRVs are the need of the hour for modern buildings. By embracing these innovative ventilation systems, we can create healthier, more energy-efficient spaces for future generations. Are you looking for a sustainable heat recovery system for your building too? Contact DRI Rotors now to get the best offers.

Heat Recovery Ventilators: Optimizing Indoor Air Quality and Energy Efficiency  

Enhancing Indoor Air Quality while Conserving Energy  

In today’s quest for energy-efficient and comfortable homes, heat recovery ventilation (HRV) and energy recovery ventilation (ERV) systems have emerged as popular choices. These systems play a crucial role in maintaining a continuous supply of fresh air while recovering and reusing energy that would otherwise be lost. Let’s delve into the details of HRVs and ERVs to understand their functions and benefits.  

What is a Heat Recovery Ventilator (HRV)?  

Heat recovery ventilation is designed to optimize the exchange of heat energy between two airflows: fresh air and exhaust air. During the winter, the warm exhaust air preheats the incoming supply air, ensuring that valuable heat is retained within the building. Similarly, in the summer, the cooler exhaust air cools the warm supply air. In essence, HRVs enable fresh air to be brought into a home without compromising heat loss.  

HRV vs. ERV: Choosing the Right Ventilation Solution  

When deciding between HRVs and ERVs, it’s essential to consider the specific requirements of your home. While both systems recover heat, they differ in their approach to managing moisture. HRVs primarily focus on heat transfer and are typically equipped with a condensation drain. On the other hand, ERVs transfer heat and moisture, helping maintain a constant humidity level within the home. Here’s a general guideline to help you choose:  

HRV: HRVs are a suitable choice if you don’t have air conditioning or live in a less humid climate. They help regulate humidity levels by transferring excess indoor moisture outside, preventing the buildup of excessive humidity.  

ERV: ERVs are ideal if you have air conditioning and reside in a humid climate. These systems excel at moisture transfer, ensuring your home maintains optimal humidity levels. By keeping excess moisture outside, ERVs reduce the workload on your air conditioner, leading to energy savings.   

The Importance of Heat Recovery: Ensuring Energy Efficiency in Modern Homes  

Why is Heat Recovery Necessary?  

Modern homes are built to high technical standards, prioritizing energy efficiency through improved insulation and airtightness. However, this airtightness poses a challenge as buildings require regular air changes to maintain a healthy indoor environment. Activities involving heat production, including even breathing, generate significant amounts of moisture, which, if left unchecked, can lead to mould, mildew, and other issues. While opening doors and windows is a natural solution, it can result in substantial heat loss during colder months, negating energy efficiency efforts. Balancing heat retention and Ventilation becomes crucial for homeowners.  

Understanding Heat Recovery Ventilation Systems  

Heat recovery ventilation (HRV) systems come in various forms. Still, they all incorporate a heat exchanger, such as rotary thermal wheels, enthalpy or plate heat exchangers, heat pipes, or run-around coil systems. These systems recover heat from the outgoing air and transfer it to the incoming fresh air, reducing the workload on the HVAC system and improving energy efficiency.  

The Importance of Effective Ventilation in Modern Buildings  

Why does Ventilation Matter?  

Ventilation is crucial in ensuring a healthy and comfortable living environment in modern buildings. As energy efficiency becomes a top priority during construction, these are designed to be tightly air sealed. While this enhances energy savings, it also necessitates a well-designed ventilation system to maintain indoor air quality.  

Central Ventilation Systems: A Solution for Fresh and Clean Air  

Central ventilation systems offer an effective solution for distributing fresh air throughout the entire home. These systems work by exhausting stale air from high-moisture areas while supplying fresh air to living spaces and bedrooms. Central ventilation systems can also incorporate filters to remove particulates, allergens, and chemical pollutants, ensuring clean and healthy indoor air.  

Energy Efficiency through Heat Recovery  

One of the advantages of a tightly sealed home with a central ventilation system is the ability to recover heat and improve energy efficiency. Air entering the home through cracks and openings needs to be heated or cooled to maintain desired indoor temperatures. However, with a heat exchanger, a significant portion of the heat from the outgoing air can be captured and transferred to preheat the incoming air. This process can recover between 70% and 95% of the heat, reducing energy consumption for heating incoming air. This feature is valuable in colder climates, where maintaining warmth is essential.  

Promoting a Healthy and Comfortable Living Environment  

Effective ventilation systems not only ensure the distribution of fresh air but also help maintain a healthy and comfortable indoor environment. Ventilation systems exchange stale air with fresh air and prevent the buildup of excess moisture, pollutants, and odors, reducing the risk of mold growth, allergens, and unpleasant smells. Moreover, central ventilation systems allow for the even distribution of fresh air throughout the home, ensuring that every room receives the necessary airflow for optimal comfort.  

Striking a Balance: Energy Efficiency and Indoor Air Quality  

When planning a ventilation system for your home, it is essential to strike the right balance between energy efficiency and indoor air quality. A well-designed central ventilation system and airtight construction can effectively minimize energy losses associated with air leakage. By capturing and utilizing the heat from the outgoing air, these systems reduce the demand for heating incoming air, resulting in energy savings and lower utility bills. At the same time, they ensure that your home is supplied with clean, fresh air for a healthier and more comfortable breathing environment.  

As you consider the design and construction of your office or workplace, prioritize the implementation of an effective ventilation system. By choosing a central ventilation system with heat recovery capabilities, you can enjoy the benefits of energy efficiency and improved indoor air quality. Breathe easier and create a healthier living space for you and your family with a well-designed ventilation system that meets your needs. Get in touch with DRI Rotors to install a suitable heat ventilation system at your premises. 

Unlocking Energy Efficiency with Heat Recovery Wheels 

Here’s how Heat Recovery Wheels work. 

Heat recovery wheels are typically installed in an HVAC system’s supply and exhaust air ducts. The supply air duct carries fresh air into the building, while the exhaust duct carries stale air.  

As the two air streams flow past each other, the heat recovery wheel rotates to transfer heat energy from the warm, stale air to the cool, fresh air. This transfer of heat energy occurs using a heat-absorbing material typically made of aluminum or a similar metal for sensible wheels and a moisture-absorbing material like silica gel or a zeolite molecular sieve for an Enthalpy recovery Wheel.  

The heat recovery wheel captures the heat energy from the outgoing air stream as it passes through the heat-absorbing material. The wheel then rotates and transfers this heat energy to the incoming air stream as it passes through the same material in the opposite direction.  

As a result, the fresh air entering the building is pre-heated, while the exhaust air leaving the building is cooled. It helps reduce the HVAC system‘s overall energy consumption, as less energy is required to heat or cool the incoming air.  

Benefits of Heat Recovery Wheels  

Heat recovery wheels are most effective in climates with a significant temperature difference between indoor and outdoor air. In colder climates, the wheels can help to reduce heating costs by pre-heating the fresh air, while in warmer climates, they can help to reduce cooling costs by pre-cooling the fresh air.  

Energy recovery wheels can be separate equipment or come pre-installed in an air handler.  

Caution: It is important to note that proper maintenance and cleaning of the heat recovery wheel is essential for optimal performance and energy savings. Dirty or clogged wheels can reduce the system’s effectiveness and increase energy consumption.  

Types of Heat Recovery Wheels 

One type will capture sensible heat only; the other is an enthalpy wheel, often called a desiccant wheel, which will catch sensible and latent heat.  

Sensible Heat Wheel  

With the use of a sensible heat recovery wheel, the dry bulb temperature of the air will be regulated depending on the outdoor temperature and setpoint. There will be no effect on the air’s moisture content or latent heat, as no moisture is transferred between the two air streams.  

Enthalpy Wheel  

Using an enthalpy wheel or total energy wheel will affect the moisture content or latent heat of the air. Both sensible and latent heat will be transferred using an enthalpy wheel. The amount of moisture transferred depends on the water vapor in the air. Moisture is shared between the two airstreams using a desiccant that absorbs or adsorbs water vapor from the high-pressure vapor airstream and releases it into the lower-pressure vapor airstream.  

Capacity Control of Heat Recovery Wheels  

When the system’s load varies, the wheel can adjust its speed using a variable frequency drive (VFD), or a bypass duct can be installed around the wheel to reduce the volume of air that travels through the heat recovery wheel.  

The Heating Season for Heat Recovery  

When heating is required and the temperatures outside are freezing, a heat or energy recovery wheel can save energy by removing heat from the exhaust airstream. No matter the season, an energy recovery wheel can retrieve needed warmth or expel unwanted heat from the airstreams.  

How Can We Help You?  

At DRI Rotors, we’re dedicated to providing optimal solutions for maintaining the efficiency and longevity of heat recovery wheels, an integral component of modern HVAC systems. We understand that the proper upkeep of these units is critical in ensuring not just the consistent performance of the systems but also the quality of the indoor air and the overall energy efficiency of the building.  

Our range of services extends beyond providing high-quality, durable heat recovery wheels. We also assist our customers in maintaining their equipment to ensure peak operation. This involves regular inspection of the wheels, assessment of their condition, and recommendations for repair or replacement when necessary. Additionally, our expert technicians provide invaluable advice on preventative maintenance measures to minimize wear and tear and prevent potential breakdowns. 

We also understand the evolving industry needs and the importance of energy-efficient solutions. Hence, we continuously invest in research and development to innovate and upgrade our heat recovery wheels. It ensures our products meet and exceed industry standards while contributing to energy conservation and sustainable business practices. 

Improving Indoor Air Quality with Advanced Air Purification Systems: Benefits and Technologies  

In our fast-paced modern lives, we spend much time indoors, whether at home, in offices, schools, or other indoor spaces. However, many people don’t realize that the air we breathe indoors can profoundly impact our health and well-being. Poor indoor air quality (IAQ) can lead to various health issues, from respiratory problems to allergies, headaches, and fatigue.  

Long-term exposure to indoor pollutants can even result in more severe health concerns like cardiovascular diseases and respiratory disorders. Poor IAQ can also affect productivity and performance in commercial settings, leading to decreased focus, increased sick leaves, and reduced overall efficiency.  

Understanding Air Purification Systems  

Air purification systems significantly combat indoor air pollution and create healthier indoor environments. These systems use various mechanisms to remove airborne pollutants from the indoor air, such as filtration, ionization, UV-C germicidal irradiation, and photocatalytic oxidation (PCO). Each technology offers unique benefits, making air purifiers an effective tool in improving IAQ.  

Types of Air Purification Technologies  

HEPA (High-Efficiency Particulate Air) Filters  

HEPA filters effectively capture small particles, including dust, pollen, pet dander, and mould spores. These filters can significantly improve air quality by removing various allergens and irritants.  

Activated Carbon Filters  

Activated carbon filters are excellent at removing odours, adverse chemicals, and volatile organic compounds (VOCs) from the indoor air. They absorb these pollutants, creating a fresher and cleaner indoor environment.  

Electrostatic Precipitators  

Electrostatic precipitators use an electric charge to trap particles in the air. They are instrumental in capturing larger particles like dust and smoke, making them an efficient option for specific indoor spaces.  

UV-C Light Purifiers UV-C light purifiers use ultraviolet light to neutralize viruses and bacteria in the air, helping to reduce the risk of infections and improve overall hygiene.  

Photocatalytic Oxidation (PCO) Systems  

PCO systems combine UV light with a catalyst to break down pollutants, such as VOCs and other harmful gases, into harmless substances like carbon dioxide and water vapour.  

Benefits of Advanced Air Purification Systems  

Removal of Particulates and Allergens Advanced air purifiers equipped with HEPA filters can efficiently capture and remove airborne particles, including dust, pollen, pet dander, and mould spores, thus significantly improving air quality and reducing the risk of respiratory issues caused by allergens.  

Eliminating Harmful Chemicals and VOCs  

Air purification systems with activated carbon filters can effectively absorb and eliminate harmful chemicals, odours, and VOCs, creating a healthier indoor environment.  

Bacteria and Virus Inactivation  

UV-C light purifiers and PCO systems can help inactivate bacteria and viruses, reducing the risk of infections and improving overall hygiene in indoor spaces.  

Odour and Smoke Removal  

Air cleaners, equipped with activated carbon filters, are particularly effective in removing stubborn odours and smoke, creating a pleasant and odour-free indoor environment.  

Improved Respiratory Health  

By reducing airborne allergens and irritants, advanced air purifiers can help alleviate respiratory issues, such as asthma and allergies, improving respiratory health and overall well-being.  

Enhanced Indoor Air Quality in Commercial Spaces  

Air purification systems in commercial settings can significantly improve IAQ, providing a healthier and more comfortable environment for employees and customers. Furthermore, adding to enhanced productivity and reduced absenteeism due to health-related issues.  

Considerations for Choosing the Right Air Purification System  

Before selecting an air purification system , it’s essential to assess the specific IAQ needs of the indoor space. Factors such as pollutant types and levels, room size and coverage area, filter replacement and maintenance, noise levels, and energy efficiency should all be considered. Choosing an energy-efficient, quiet air purifier ensures minimal disruption and reduced energy consumption.  

Moreover, look for air purifiers with relevant certifications and industry standards for performance and safety. Reputable brands that offer comprehensive customer support and warranty coverage are also essential considerations when investing in an advanced air purification system.  

Industrial Applications and Clean Room Environments  

Precision and safety are paramount when discussing the use of advanced air purification systems in industrial applications and clean room environments.  

Advanced air purification systems are vital in improving IAQ and creating safer and healthier indoor environments. By removing airborne pollutants, allergens, harmful chemicals, and bacteria, these systems contribute to better respiratory health, reduced allergies, and enhanced well-being for occupants.  

In commercial settings, improved IAQ can lead to increased productivity and reduced absenteeism, while in industrial environments, clean air is essential for precision and safety.  

When choosing an air purification system, assessing the specific IAQ needs, room size, and features is crucial to ensure the best possible performance and efficiency. Reputable brands with certifications and industry standards are reliable for high-quality air purification solutions.  

By investing in advanced air purification technologies, individuals and businesses can take proactive steps towards creating a healthier and more comfortable indoor environment, ensuring the well-being and productivity of occupants.  

At DRI Rotors, we aim to provide the best Indoor Air Quality for business purpose. Reach us now to get a consultation about your business and maintaining high-level air quality at your premises for higher productivity. 

The Role of Desiccant Wheels in Dehumidification: Technology and Applications 

In our fast-paced modern lives, we spend much time indoors, whether at home, in offices, schools, or other indoor spaces. However, many people don’t realize that the air we breathe indoors can profoundly impact our health and well-being. Poor indoor air quality (IAQ) can lead to various health issues, from respiratory problems to allergies, headaches, and fatigue.

Long-term exposure to indoor pollutants can even result in more severe health concerns like cardiovascular diseases and respiratory disorders. Poor IAQ can also affect productivity and performance in commercial settings, leading to decreased focus, increased sick leaves, and reduced overall efficiency.

Understanding Air Purification Systems

Air purification systems significantly combat indoor air pollution and create healthier indoor environments. These systems use various mechanisms to remove airborne pollutants from the indoor air, such as filtration, ionization, UV-C germicidal irradiation, and photocatalytic oxidation (PCO). Each technology offers unique benefits, making air purifiers an effective tool in improving IAQ.

Types of Air Purification Technologies

HEPA (High-Efficiency Particulate Air) Filters

HEPA filters effectively capture small particles, including dust, pollen, pet dander, and mould spores. These filters can significantly improve air quality by removing various allergens and irritants.

Activated Carbon Filters

Activated carbon filters are excellent at removing odours, adverse chemicals, and volatile organic compounds (VOCs) from the indoor air. They absorb these pollutants, creating a fresher and cleaner indoor environment.

Electrostatic Precipitators

Electrostatic precipitators use an electric charge to trap particles in the air. They are instrumental in capturing larger particles like dust and smoke, making them an efficient option for specific indoor spaces.

UV-C Light Purifiers UV-C light purifiers use ultraviolet light to neutralize viruses and bacteria in the air, helping to reduce the risk of infections and improve overall hygiene.

Photocatalytic Oxidation (PCO) Systems

PCO systems combine UV light with a catalyst to break down pollutants, such as VOCs and other harmful gases, into harmless substances like carbon dioxide and water vapour.

Benefits of Advanced Air Purification Systems

Removal of Particulates and Allergens Advanced air purifiers equipped with HEPA filters can efficiently capture and remove airborne particles, including dust, pollen, pet dander, and mould spores, thus significantly improving air quality and reducing the risk of respiratory issues caused by allergens.

Eliminating Harmful Chemicals and VOCs

Air purification systems with activated carbon filters can effectively absorb and eliminate harmful chemicals, odours, and VOCs, creating a healthier indoor environment.

Bacteria and Virus Inactivation

UV-C light purifiers and PCO systems can help inactivate bacteria and viruses, reducing the risk of infections and improving overall hygiene in indoor spaces.

Odour and Smoke Removal

Air cleaners, equipped with activated carbon filters, are particularly effective in removing stubborn odours and smoke, creating a pleasant and odour-free indoor environment.

Improved Respiratory Health

By reducing airborne allergens and irritants, advanced air purifiers can help alleviate respiratory issues, such as asthma and allergies, improving respiratory health and overall well-being.

Enhanced Indoor Air Quality in Commercial Spaces

Air purification systems in commercial settings can significantly improve IAQ, providing a healthier and more comfortable environment for employees and customers. Furthermore, adding to enhanced productivity and reduced absenteeism due to health-related issues.

Considerations for Choosing the Right Air Purification System

Before selecting an air purification system, it’s essential to assess the specific IAQ needs of the indoor space. Factors such as pollutant types and levels, room size and coverage area, filter replacement and maintenance, noise levels, and energy efficiency should all be considered. Choosing an energy-efficient, quiet air purifier ensures minimal disruption and reduced energy consumption.

Moreover, look for air purifiers with relevant certifications and industry standards for performance and safety. Reputable brands that offer comprehensive customer support and warranty coverage are also essential considerations when investing in an advanced air purification system.

Industrial Applications and Clean Room Environments

Precision and safety are paramount when discussing the use of advanced air purification systems in industrial applications and clean room environments.

Advanced air purification systems are vital in improving IAQ and creating safer and healthier indoor environments. By removing airborne pollutants, allergens, harmful chemicals, and bacteria, these systems contribute to better respiratory health, reduced allergies, and enhanced well-being for occupants.

In commercial settings, improved IAQ can lead to increased productivity and reduced absenteeism, while in industrial environments, clean air is essential for precision and safety.

When choosing an air purification system, assessing the specific IAQ needs, room size, and features is crucial to ensure the best possible performance and efficiency. Reputable brands with certifications and industry standards are reliable for high-quality air purification solutions.

By investing in advanced air purification technologies, individuals and businesses can take proactive steps towards creating a healthier and more comfortable indoor environment, ensuring the well-being and productivity of occupants.

At DRI Rotors, we aim to provide the best Indoor Air Quality for business purpose. Reach us now to get a consultation about your business and maintaining high-level air quality at your premises for higher productivity.

Evaporative Cooling: Reducing carbon footprint and improving indoor air quality

Debashish Roy Choudhury, AVP of the ARCTIC Division at DRI, highlights how evaporative cooling technology innovatively conditions the air while eliminating the need for harmful refrigerants. This environmentally friendly approach to cooling significantly reduces the carbon footprint.

With the onset of summer, the acute rising temperature becomes a matter of enormous concern. People generally resort to air conditioning for relief to beat the scorching heat. But in return, it poses severe irreparable environmental damage while overshooting the electricity bill. The problem becomes even more amplified in the commercial and industrial spaces. Amidst such conditions, green cooling provides perfect cooling solutions for giving comfort from the heat in the most economical way possible.

Based on the sustainable cooling mechanism, it fights against the issue of global warming and climate change in the most energy-efficient way by harnessing the benefits of ancient traditional methods. India projecting a surge in power consumption by 9% in February showcases the importance of adopting the green cooling solution. According to the World Bank report, the low-carbon cooling method can translate to a $1.5 trillion investment opportunity in the country in the next two decades.

Here, it is important to understand that the heat issue gets further aggravated in the commercial and industrial space. As a result, it immensely jeopardises the health and productivity of the occupants. For instance, places such as schools and colleges, offices, restaurants, factories, warehouses, etc., are large complex spaces requiring more ventilation. The spaces accommodate many people at a given time, making it difficult and tricky to cool down the space naturally. Deploying air conditioning in such large spaces for cooling purposes can impose huge installation costs and continually levy heavy operational charges, making it a costly option. Moreover, considering the large area, much energy is wasted in cooling down the extra space.

Hence, looking at the cooling requirement of commercial and industrial space, Industrial Evaporative Cooling works best and most economical for large spaces. Providing thermal comfort, it efficiently protects the integrity of the space. Compared to other alternatives, evaporative cooling requires minimal installation capital cost, charging approximately 60-70 percent of the cost of setting up an air conditioning system. Additionally, using natural resources for cooling substantially minimises the running cost of the machines. Packed with high-adsorbent materials, evaporative cooling comes with elevated saturation efficiency that contributes to the overall cost-effectiveness of the machines. It can substantially reduce energy consumption by utilising 80 percent less electricity as compared to other alternatives available in the market. The range of ARCTIC Coolers is highly efficient in providing cooling solutions for large spaces, especially in warm and tropical Indian weather conditions.

The innovative cooling system takes an environment-friendly route to provide relief even in the peak summer months. It can achieve a temperature of 27°C, bringing it down from 45°C against harsh outdoor conditions in most parts of India. The technology works on the principles of evaporating water into the air, extracting 100 percent natural fresh air from the surrounding, and bringing down the temperature of large, complex spaces. In the process, it maintains continuity in the supply of fresh oxygen to the room. This continuous supply and circulation of fresh air is a major factor in reducing the stale indoor air within the space.

Considering the cooling mechanism involved, it eliminates the stagnant indoor air responsible for the proliferation of viruses and bacteria. Likewise, it removes fumes, odour, and carbon dioxide, including other airborne impurities and built-in dust, from the vast space. Cumulatively, apart from cooling, the evaporative cooling solution also improves indoor air quality.

Based on green air conditioning, the technology very innovatively conditions the air with the help of evaporative cooling. It prevents the dependency on any harmful refrigerants for cooling. On the whole, the process of cooling reduces the carbon footprint effectively. As a result, it perfectly complies with the India Cooling Action Plan for promoting affordable and energy-efficient cooling. Aimed at reducing the refrigeration demand of the country, the plan advocates for passive cooling in the building. At the same time, the cooling mechanism serves the purpose of reaching the net-zero targets set to be achieved by the country.

In conclusion, Industrial Evaporative Cooling is the ideal solution for various heat problems, making it the most sought-after cooling option for summer. Being economical and energy-efficient, sustainable cooling is the most suitable method for relieving unbearable heat.

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Pahwa Group Inaugurates the DRI Sustainable Agriculture Resource Center on World Environment Day

DRI, the flagship company of Pahwa Group, the fastest growing adsorption technology group in the world, inaugurates the DRI Sustainable Agriculture Resource Center at Dadhikar village in Alwar, Rajasthan, in partnership with the Sapna NGO. With an aim to provide benefits to the farmers, the center was inaugurated on the occasion of the World Environment Day (5th June, 2023) by Mrs. Anandita Pahwa, Head-CSR Initiatives, Pahwa Group, in the presence of Mr. Jagdish Prasad Sharma, Assistant Agriculture Officer, Alwar; Mr. Sudhir Pratap Singh, General Secretary and Prof. Ranvir Singh, Secretary, Sapna NGO. Many of the farmers from the Dadhikar village were also present for the inauguration.

The objective of this center is to promote sustainable and environment-friendly agricultural practices and improve soil health and fertility through natural methods. Benefiting more than 150 farmers in the area, this project will lead to increased access to organic, healthy and chemical-free food for the local community, along with providing training and support to farmers & villagers transitioning to organic farming methods. Initially, four types of organic khad will be made and distributed to the villagers from the new center, namely Neemastra, Jivamrit, Vermi Compost and Rapid Compost.

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This center is aimed at generating awareness about organic farming and increasing the productivity of the crop. The long-term impact of this project will be to eliminate the use of synthetic inputs, such as synthetic fertilizers and pesticides, genetically modified seeds and breeds, preservatives, additives and irradiation. These will be replaced by site-specific management practices that maintain and increase long-term soil fertility and prevent pests and diseases.

Screenshot 2023 06 06 at 4.58.43 PM DRI Rotors

Earlier this year, the company also inaugurated a Check Dam in the same area of Dadhikar village, Alwar to balance the water scarcity by recharging the water table. Commenting on the past initiatives and the new center, Anandita Pahwa, Head – CSR Activities, Pahwa Group said, “We are proud to say that the underground water levels have gone up since the construction of the check dams in the area, allowing the farmers some respite in terms of the availability of water. It has also encouraged them to get back to farming with vigor and we want to further work towards this. Moreover, we are sure that the new DRI Sustainable Agriculture Resource Center will act as a catalyst of change and arm the farmers with resources to move away from synthetic fertilizers and pesticides, towards using organic farming products“

 

The Center will also be used as a Farmer Training and Capacity Building center, where the company plans to conduct workshops and training sessions on organic farming techniques. It will also provide education on soil management, composting, natural pest control, and crop rotation, and demonstrate different organic techniques suitable for the local conditions.

Screenshot 2023 06 06 at 4.59.01 PM DRI Rotors

In addition to the inauguration, DRI and Bry-Air (another flagship company under the Pahwa Group) also organized volunteer activities with the children studying at the Bry-Air and DRI Pathshalas in Dharam Colony and Carterpuri village of Gurugram on the same day. The activities for the students included a drawing competition around the theme of ‘beating plastic pollution’, decorating flowerpots and planting seeds in them. The aim of the event was to create awareness among the students and sensitize them as future generations towards the growing strain on Earth’s natural ecosystem and encourage them to take steps to protect the environment.

For years, Pahwa Group has been an active participant in the endeavor to protect the environment and preserve the earth. It has undertaken various initiatives like the construction of check dams for rainwater harvesting, plantation drives, and afforestation to increase green cover and improve the air quality in a step towards the restoration of the ecosystem. As a result of the regular afforestation drives in Dadhikar village, Alwar, Rajasthan, a forest of more than 750 medicinal and fruit-bearing trees has been developed. This will help in the re-greening of the area which will be able to provide fruits for the locality.

Source…

Why HVAC Experts Recommend Energy-Efficient Air Handling Units (AHUs) For Sustainable and Effective Management of Air Quality in Large Spaces

Air Handling Units (AHUs)

GUIDE TO CHOOSING ENERGY-EFFICIENT AIR HANDLING UNITS (AHUS) FOR SUSTAINABLE AND EFFECTIVE MANAGEMENT OF AIR QUALITY IN LARGE COMMERCIAL AREAS

According to one recent estimate, the world’s population may reach 8.5 billion in 2030 and 9.7 billion by 

Reaching net zero goals will be difficult given this rate of population expansion. Many nations are going through an energy-intensive period of commercialization and urbanization, specifically driving growing demand for energy services. When we add the issues of combating climate change, energy saving becomes a critical goal for all business enterprises.

Energy is squandered in business enterprises in several ways. For instance, inefficient appliances waste energy in the commercial sector, and extra heat produced during peak occupation hours could be put to better use. Because there are few easy and reasonably inexpensive ways to track and manage the energy used in buildings and businesses, enormous amounts of energy are lost every day. 

A meticulous inspection of any commercial building is required to design solutions to properly manage several parameters like air quality and humidity to maintain appropriate temperature and air quality in large open spaces. Depending on specific business needs, HVAC experts offer several solutions to improve occupant safety, comfort, productivity, structural preservation, and increased energy efficiency. 

VENTILATION AND COOLING CHALLENGES IN LARGE COMMERCIAL COMPLEXES

Large entrances, insufficient insulation, air leakage, and inefficient heat distribution are all factors in energy loss in large buildings. Excessive outside air penetration makes buildings more susceptible to high energy expenses. Even in enclosed large areas, creating the proper air distribution (also known as thermal stratification) is challenging. Warm air rises, whereas cold air tends to settle, creating stratified layers prone to stagnation. In addition, cold downdrafts frequently arise along vertical surfaces due to temperature differences. These may result in unwelcome cold areas in the structure. By bringing in a lot of cold air at once, conventional HVAC cooling systems can make the issue worse. 

Another factor is the variation in fresh air needs as per occupancy levels in different parts of a large facility. When the building is completely occupied, additional air may be required to meet the structure’s needs for fresh air. Hence, it is crucial to design the HVAC system when the requirement for air intake fluctuates so that these variations may be rapidly and readily addressed. 

Finally, in large buildings, poor airflow, air stratification, and moisture accumulation can all work together to foster the growth of hazardous mold. In addition, stale air can be a thriving place for bacteria, viruses, and other airborne toxins to thrive. 

Condensation of moisture is also common in large structures, especially those that are not insulated. Like all moisture concerns, this one could result in fungus growth troubles and structural damage to the building. Finally, in large buildings, poor airflow, air stratification, and moisture accumulation can all work together to foster the growth of hazardous mold. In addition, stale air can be a thriving place for bacteria, viruses, and other airborne toxins to thrive. 

Troubleshooting ventilation and cooling issues can be challenging, particularly in buildings with several integrated HVAC components. It’s crucial to identify the root cause of any issues your building has if you’re encountering these or other similar issues. Energy-smart HVAC solution experts can help resolve most of these issues by using innovative solutions, significantly improving the affected buildings’ comfort, safety, productivity, and energy savings. 

AIR HANDLERS CAN EFFICIENTLY MANAGE COMPLEX VENTILATION AND AIR PURIFICATION NEEDS OF VAST AREAS

One of the most efficient ways to manage the proper ventilation requirements for purifying and rejuvenating the interior air in a building is using an air handling unit, often known as an AHU. An essential part of any sizable air-cooling system, AHU allows simultaneously cooling vast areas while also assisting in regulating indoor air quality (IAQ). The system is fixed to a building’s ground floor, basement, or roof during installation. 

By regulating temperature and airflow across different parts of a commercial complex, an AHU installation ensures that the occupants receive fresh air with comfortable cooling. AHUs are used frequently in conjunction with other heating and cooling systems. These units are often large and attached to ducts that distribute regulated air throughout the structure and expel exhausted air. 

HOW AIR HANDLING UNIT (AHU) WORKS

An AHU unit is made up of components mounted in sizable, easily accessible box-shaped units called modules. These modules contain the necessary ventilation components for cleaning, cooling, or replenishing the indoor air in a location. Air handling devices pull outside air, clean it, and distribute it throughout the rooms. They can also pull indoor air that has been “recycled.” Several filters trap particles, viruses, bacteria, odors, and other air contaminants. 

HOW AIR HANDLING UNIT (AHU) WORKS

 

 

The AHU lowers the energy needed for air cooling since the exchanger mixes internal and outdoor air, lowering the temperature contrast when the air enters the coil and leading to lower energy consumption. The fans can operate as per the required flow rate thanks to the equipment’s variable regulation, which reduces consumption. Coils, heat exchangers, and other components are all optimized to provide the lowest pressure drop to achieve the highest efficiency, resulting in extremely low maintenance and operating costs.

DESICCANT ROTORS INTERNATIONAL (DRI): YOUR PARTNER IN TRANSITIONING TO “NET ZERO” WITH RESEARCH-BACKED SOLUTIONS

DRI’s mission is to develop sustainable green building solutions to assist companies in their transition to net zero. With a focus on innovation and new product development, DRI has taken the lead in developing numerous components and solutions using its expertise in desiccants, corrugation technology, and air system design. 

DRI offers a wider range of services and products on a global scale – including, energy recovery, indoor air quality, fresh air treatment, evaporative cooling, green buildings, dehumidification, and pollution control. To offer maximum flexibility and the optimal solution for a company, the DRI AHU product line consists of 15 types with air volumes ranging from 1700 to 60000 CMH and internal static pressures as high as 1000pa. 

DESICCANT ROTORS INTERNATIONAL (DRI)

DRI application experts are renowned for their capacity to design and construct customized equipment and installations for various commercial sectors. With five cutting-edge manufacturing facilities, DRI has received ISO 9001 and ISO 14001 certifications. With a focus on quality and on-time delivery, the plants are vertically integrated and house all essential components and production processes. 

Curtailing heat problems in industrial plants with the help of evaporative cooling

By Debashish Roy Choudhury AVP, ARCTIC Division, DRI |  Added 05 September 2022

Heat is a very common problem in industrial plants. Insufficient cooling intervenes with the day-to-day operations of the plant, which causes the main problem of poor performance of the company. The rising temperature can make the environment within the premises uncomfortable, rendering it unsuitable for working conditions. In case employees are exposed to a prolonged period of excessive heat, it gives way to a phenomenon called heat stress that sharply affects the productivity of the workers. Therefore, achieving optimal industrial ventilation is imperative for industrial plants to ensure the highest performance from the employees.

But considering that industrial spaces are inherently complex structures loaded with heavy machinery, cooling the premises becomes tricky.  Additionally, the critical processes being carried out emanate a lot of heat that amplifies the heat issue of the space. This mandates the installation of a highly effective cooling solution to ventilate the industrial plants substantially. Controlling the temperature is essential to retain the integrity and efficiency of the industrial workspace.

Along with the complexity of the place, a lot of energy is wasted in cooling down the extra space. Here, Industrial Evaporative Cooling is the most viable solution suitable for cooling such a large space. It is best suited to provide cooling solutions in the most economical way. It requires minimal capital costs for installations, and the average price for system setup is one-fourth the cost of setting up an air conditioning system.

The mechanisms involved in Industrial Evaporative Cooling make use of natural resources, hence, the entire process is environmental-friendly. It extracts 100 percent natural fresh air from the surroundings to cool down the large industrial space. In the process, it also ensures a continuous supply of fresh oxygen to the room which removes all the fumes, odor, carbon dioxide, and other airborne impurities, and the built-in dust from the enclosed space. This continuous influx and circulation of fresh air reduce the sultriness within the premises. At the same time, it eliminates the stagnant indoor air, which is a major reason for the growth of viruses and bacteria. It is quite evident that evaporative cooling not just cools down the industrial plant, but also plays an imperative role in improving indoor air quality. It majorly contributes to reducing the carbon footprint.

Image DRI Rotors

Making use of natural resources, evaporative cooling automatically reduces the temperature by 10 °C to 12°C by simply filtering hot, dry air through the water-saturated cooling pads. Here, water evaporation initiates the formation of cool vapor to achieve the cooling effect. Along with this, the innovative cooling solution is well-equipped with high adsorbent materials responsible for amplifying saturation efficiency. All the factors cumulatively reduce the running cost of the machines by adding to the productivity of the machines. The energy consumption is substantially reduced where it utilizes 80 percent less electricity in comparison to other air conditioning alternatives available in the market. Installing brands like ARCTIC can efficiently help in meeting the air quality requirements, where it is adept at achieving cooling solutions in a comfortable and hassle-free way.

There are instances where the machines are vulnerable to getting damaged due to overheating of parts. Evaporative cooling with the help of its cooling solutions maintains the temperature at optimal levels that ensures the smooth functioning of the machines. Keeping the temperature cool, provides comfortable working conditions. As a result, the employees are better able to concentrate and deliver error-free work. This invariably boosts the productivity of the plant and adds to the profit stability of the company.

By Debashish Roy Choudhury AVP, ARCTIC Division, DRI |  Added 05 September 2022

Heat is a very common problem in industrial plants. Insufficient cooling intervenes with the day-to-day operations of the plant, which causes the main problem of poor performance of the company. The rising temperature can make the environment within the premises uncomfortable, rendering it unsuitable for working conditions. In case employees are exposed to a prolonged period of excessive heat, it gives way to a phenomenon called heat stress that sharply affects the productivity of the workers. Therefore, achieving optimal industrial ventilation is imperative for industrial plants to ensure the highest performance from the employees.

But considering that industrial spaces are inherently complex structures loaded with heavy machinery, cooling the premises becomes tricky.  Additionally, the critical processes being carried out emanate a lot of heat that amplifies the heat issue of the space. This mandates the installation of a highly effective cooling solution to ventilate the industrial plants substantially. Controlling the temperature is essential to retain the integrity and efficiency of the industrial workspace.

Along with the complexity of the place, a lot of energy is wasted in cooling down the extra space. Here, Industrial Evaporative Cooling is the most viable solution suitable for cooling such a large space. It is best suited to provide cooling solutions in the most economical way. It requires minimal capital costs for installations, and the average price for system setup is one-fourth the cost of setting up an air conditioning system.

The mechanisms involved in Industrial Evaporative Cooling make use of natural resources, hence, the entire process is environmental-friendly. It extracts 100 percent natural fresh air from the surroundings to cool down the large industrial space. In the process, it also ensures a continuous supply of fresh oxygen to the room which removes all the fumes, odor, carbon dioxide, and other airborne impurities, and the built-in dust from the enclosed space. This continuous influx and circulation of fresh air reduce the sultriness within the premises. At the same time, it eliminates the stagnant indoor air, which is a major reason for the growth of viruses and bacteria. It is quite evident that evaporative cooling not just cools down the industrial plant, but also plays an imperative role in improving indoor air quality. It majorly contributes to reducing the carbon footprint.

Image DRI Rotors

Making use of natural resources, evaporative cooling automatically reduces the temperature by 10 °C to 12°C by simply filtering hot, dry air through the water-saturated cooling pads. Here, water evaporation initiates the formation of cool vapor to achieve the cooling effect. Along with this, the innovative cooling solution is well-equipped with high adsorbent materials responsible for amplifying saturation efficiency. All the factors cumulatively reduce the running cost of the machines by adding to the productivity of the machines. The energy consumption is substantially reduced where it utilizes 80 percent less electricity in comparison to other air conditioning alternatives available in the market. Installing brands like ARCTIC can efficiently help in meeting the air quality requirements, where it is adept at achieving cooling solutions in a comfortable and hassle-free way.

There are instances where the machines are vulnerable to getting damaged due to overheating of parts. Evaporative cooling with the help of its cooling solutions maintains the temperature at optimal levels that ensures the smooth functioning of the machines. Keeping the temperature cool, provides comfortable working conditions. As a result, the employees are better able to concentrate and deliver error-free work. This invariably boosts the productivity of the plant and adds to the profit stability of the company.

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