Energy Recovery Wheels

The EcoFresh 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 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.

Advantages

• 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%

Features

High Efficiency and Reliability

• Galvanised steel sheet casing (up to 2200 mm)
• Optional HRW-2200 & 2400 are available in Galvanised Steel (MonoG)
• Epoxy painted structural steel frame & Powder coated panel/casing (above 2400mm)
• 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.

High Selectivity:

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.

Aluminium Substrate:

The aluminium substrate eliminates any fire risks and results in high sensible recovery and high structural strength.

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 sealing system limit cross contamination to 0.04% of the exhaust air concentration by volume

Non-Contact Labyrinth Seal:

• No wear and tear
• Effective sealing
• Long life
• 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:

• Hospitality
• Health Care
• Commercial Areas
• Residential, Educational & Recreational Areas