The EcoFresh Energy Recovery Wheel, whichrecovers total energy (sensible as well as latent), assists in meeting all the requirements of Indoor Air Quality (IAQ), humidity control, and energy saving.
DRI offers the Highest Recovery Enthalpy Wheels in the world (Aluminum substrate coated with a choice of desiccants).
Incorporation of EcoFresh Heat Wheels into the air-conditioning system means more outdoor air at lower energy cost (reduced chiller load).
Energy Recovery Wheels are also known as Energy Conservation Wheels, Energy Recovery Wheels, Enthalpy Wheels, Sensible Wheels, Hygroscopic Wheels, Condensation Wheels or Sorption Wheels. These air-to-air Heat Exchangers can recover both sensible (Heat) and latent (Moisture) energy but may use different technologies and offer different efficiencies.
Pre-conditions incoming fresh air
Can be easily integrated/retrofitted into new/existing ventilation systems
Delivers fresh air throughout the year at conditions very near to 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%
High Efficiency and Reliability
Galvanised steel sheet casing (up to 2200 mm)
Optional HRW-2200 & 2400 are available in Galvanised Steel (MonoG)
Molecular sieve coated aluminium “EcoFresh” total energy recovery wheel
Equal sensible and latent recovery
Designed for low rotor speed around 30 rpm
The rotor is made of alternate flat and corrugated aluminium foil of very uniform pitch and height
The media is cleanable with compressed air
Highest efficiency wheel in its category
The surface of the wheel is highly polished to ensure that the vertical runout does not exceed ±1mm for every 1 meter diameter
Rotor depth of 270mm
The face and radial seals are brush seal (up to 2200 mm)
The face and radial seals are four (4) pass non contact labyrinth seals (above 2400 mm) for effective sealing between the two air streams
Rotor face edges are hardened which ensures long life of the media
Energy Recovery Wheels provide fresh air solutions for conditioned spaces. They help in maintaining indoor air quality (IAQ) and saves energy. In addition, it helps in earning substantial green building LEED points.
EcoFresh Energy Wheels MS270A series use Molecular Sieve 3A (EcoSorb 300) desiccant coated on aluminium substrate. This results in high latent recovery and control on cross contamination.
The aluminium substrate eliminates any fire risks and results in high sensible recovery and high structural strength.
Purge section provides strict separation of air flows, preventing carryover of bacteria, dust, and pollutants from exhaust air to supply air
Purge section and sealing system limit cross contamination to 0.04% of the exhaust air concentration by volume
Non-Contact Labyrinth Seal:
No wear and tear
Brush seal for wheels up to 2200 nm
Structural Rigidity, Hardened Edges, and Innovative Manufacturing Design:
State-of-the-art winding technology and adhesives give EcoFresh rotors high structural strength
Wheel edges hardened as standard to suit marine coastal application needs
Highly Polished Surface:
Vertical run-out less than 1 mm per 1000 mm resulting in extremely low leakage across the central divider seals.
Robust Spoke Structure
Highest Recovery Efficiency Ratio (RER) in the industry
Industry’s Highest Recovery Performance:
High desiccant loading/ coating
Equal sensible and latent recovery, thus, comparatively higher total enthalpy recovery
Higher performance and low pressure drops
Laminar airflow due to the aluminium substrate and uniform desiccant coating
Superior airflow characteristics
Wide Range & Additional Options:
Total energy recovery (Enthalpy) and AHRI Certified sensible wheels
Customised flute height and rotor depth options
Cassette as well as rotor options
Standard and customized options
500 mm (dia.)
Easy retrofit options
Segmented and Non-Segmented Options
Controls Package available
Here’s a look at some of the application areas of an Energy Recovery Wheel:
Residential, Educational & Recreational Areas
Latent heat is transferred as the synthesized metallic substrate condenses moisture from the air stream that has the higher humidity ratio through adsorption by EcoSorb (with a simultaneous release of heat) and releases the moisture through evaporation (and heat pick-up) into the air stream that has the lower humidity ratio.
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
Latent heat is transferred as the desiccant coating on the metallic substrate adsorbs moisture from the air stream that has the higher humidity ratio and releases the moisture into the air stream that has the lower humidity ratio
The costs of dehumidifier repair and replacement outweighs that of regular maintenance and service. In addition, regular and timely maintenance of dehumidifiers and other HVAC equipment is an effective safeguard against everyday wear and tear.