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Energy Recovery Rotors & Wheels
Product Description
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The EcoFresh Enthalpy / Energy Recovery Wheel, which recovers total energy (sensible as well as latent), assists in meeting all the requirements of Indoor Air Quality (IAQ), humidity control and energy saving.
DRI is proudly the world's largest manufacturer of desiccant coated aluminium substrate Energy Recovery Wheels and has an installation history of 25+ years. It also has the largest installed base of such wheels all over the world in the most iconic buildings.
DRI offers the Highest Recovery Enthalpy Wheels in the world (Aluminium substrate coated with a choice of desiccants). These are incorporated into a Fresh Air Handing Unit or Energy Recovery Ventilator. In some cases the wheel may be installed stand along with ducts.
Incorporation of EcoFresh Heat Wheels into the air-conditioning system means more outdoor air at lower energy cost (reduced loads).
Total Energy Recovery Wheels may also known in the industry as Energy Conservation Wheels, Heat Wheels, Enthalpy wheels or Sorption Wheels. Sensible only recovery Wheels are also referred to as Condensation Wheels. Hygroscopic recovery wheels have latent efficiency much lower than sorption wheels.
All DRI energy recovery wheels are certified. Eurovent certification and all AHRI program certification details are available on the website, in catalogs and on writing to us.
We offer various diameters and depth of the rotors incorporated into cassettes. Rotors and Cassettes up-to a certain diameter are monolithic as a standard.
Higher diameters on account of handling and shipping are in half moon configuration as a standard. Customization of cassettes: dimensions, construction, segmentation and material of cassette construction for specific project requirements is possible. Please contact us. Both vertical and horizontal cassettes are available. Replacement wheels of all makes are also possible and available in easy retrofit options.
How does the EcoFresh Wheel work?
In a typical installation, the wheel is positioned in an Air Handling Unit so that it is divided into two half moon sections.
Stale exhaust air is drawn through one half and outdoor air through the other in a counter flow pattern. At the same time, the wheel is rotated. Sensible heat is transferred as the metallic substrate picks up and stores heat from the warmer air stream and gives it up to the cooler one.
Operating Principle
Latent heat is transferred as the desiccant coated metallic substrate adsorbs moisture from the air stream that has the higher humidity ratio and releases the moisture through desorption into the air stream that has the lower humidity ratio.
Why EcoFresh is your best buy?
High Selectivity . . . Almost no cross contamination:
EcoFresh Energy Wheels use desiccant Molecular Sieve 3Ã… (EcoSorb 300) coated/used on aluminium substrate. This limits the cross contamination to absolute minimum and ensure exclusion of contaminants in the air streams, while transferring water vapor molecules.
In-built purge sector eliminates cross contamination:
Purge section provides strict separation of air flows, preventing carryover of bacteria, dust and pollutants from exhaust air to supply air. Purge section and labyrinth sealing system limit cross contamination down to 0.04% of the exhaust air concentration by volume. This can be further reduced through more strategies.
Structural rigidity:
- State-of-the-art winding technology and adhesives give EcoFresh rotors a high structural strength
- EcoFresh has higher structural strength
Highly Polished Surface:
Vertical run out less than 1 mm per 1000 mm resulting in extremely low leakage across the seals.
Innovative manufacturing design:
- Segmented and non-segmented options
- Spoke structure also ensures easy removal of individual wheel sections for cleaning or repair/replacement (in case of segmented plus)
- Metallic construction, coupled with the robust spoke structure allows for projects to be specified for larger wheel diameters
Industry’s highest recovery/performance:
- High Desiccant loading/coating
- Equal sensible and latent recovery, thus, comparatively higher sensible and latent recovery
- Higher performance, lower pressure drops Example: 78% nominal at 700
- FPM (3.5 m/s) and 0.67" w.c. (170 Pa) pressure drop
- Laminar airflow due to thin aluminum substrate and uniform desiccant coating
- Superior airflow characteristics allow design for higher velocities and flow rates
Non contact labyrinth seal:
- No wear and tear
- Effective sealing
- Long life
- Brush seal as option also available and standard for smaller diameters
Frost Protection:
Wheel rotation speed control helps to limit frost formation by keeping the exhaust air temperature above the dew point.
Wide Range:
- Total energy recovery (Enthalpy) as well as sensible wheels
- Customized Flute height and Rotor depth options
- Cassette as well as Rotor options
- Standard and Customized options
- 500 mm to 5000 mm + (dia.)
- Easy retrofit options
Benefits of EcoFresh Energy Recovery Wheels:
- Pre-conditions incoming fresh air
- Easily integrated/retrofitted into new/existing ventilation systems
- Delivers fresh air throughout the year at conditions very near inside conditions
- Helps to meet ventilation standard without raising energy cost
- Maintains humidity conditions at no additional cost
- Allows reduction in system capacity by 30 to 65%
