Air to Air Rotary Heat Exchanger Specifications
1)Certification: CE, Eurovent
2)Warranty: 1 year for Heat Recovery Wheel
3)Heat recovery type: Total heat
4)Wheel diameter: 500-5000mm
5)Wheel thickness: 200mm
6)Material: Aluminium with 3A molecular seive
7) Frame material: Aluzinc
8)Net Weight: 42-2100kg
9)Liquid Flow Rate: 1000-100000CMH
10)Maximum Pressure: 500PA
11)Structure: Rotary heat exchanger
12)Dimension(L*W*H): 500-5000*500-5000M
HOLTOP EUROVENT Certified Heat Recovery Wheel Features
1. Wheel Materials
The sensible heat wheel is made by aluminum foils of 0.05mm thickness.
The total heat wheel is made by aluminum foils coated with 3A molecular sieve of 0.07mm thickness.
The plate frame is made of aluzinc.
2. Working Principle
Rotary heat exchanger is composed of alveolate heat wheel, case, drive system and sealing parts. The exhaust and outdoor air pass through half of the wheel separately, when the wheel rotates, the heat and moisture are exchanged between the exhaust and outdoor air. The energy recovery efficiency is up to 70% to 90%.
3. Wheel Construction
The wheel of the rotary heat exchanger is made of alternating layers of flat and corrugated aluminum foil to form the alveolate shape.
Various height of corrugation is available. Flat surface ensures minimum leakage.
Interior spokes are used to mechanically bond the rotor's laminations. These are threaded at the hub and welded at the periphery.
4. Laminar Flow Channels
The wave type structure of the wheel forms narrow chan- nels in the direction of air flow. The air flow forms a laminar flow inside the wheel when passing through it. When the wheel rotates, dust won't accumulate on the channel since outdoor air and exhaust air respectively flow through the channels from two directions. This is called self-cleaning.
5. Double Sealing System
Unique double-sealing system is installed around the RO- tor periphery and along the central beam. The sealing materials are soft and dense of small friction and longer service life.
6. Purge Sector
Because of the structure of rotary heat exchanger, the outdoor air and exhaust air will mix. According to the air velocity, wheel rotating speed and direction, purge sector is installed to prevent the exhaust air from entering the outdoor air. The purge sector enables a small fraction of outdoor air to blow back the exhaust air in the alveolate holes to its side. A minimum pressure difference of
200PA between the outdoor air side and the exhaust air side is required to ensure the cleaning effectiveness. With all conditions provided, the sector can ensure a leakage
Below 0.3% from exhaust air to outdoor air.
7. Bearing and Lubrication
The hub of the wheel is equipped with life-time- lubricated ball bearing or roller bearing, and with covers at both sides. No maintenance is required under normal usage.
8. Driving System
The wheel is drove to rotate by this system. The drive system is composed of motor, turbine-worm reducer, belt pulley and V belt. The motor is installed on the special bracket tension- ing by the spring, it can ensure the gradually loose of V-belt in case of sudden stop.
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