eurovent certification wheel heat energy recovery core heatexchanger
eurovent certification wheel heat energy recovery core heatexchanger
Rotary heat exchanger (wheel) is mainly used in building ventilation or in the air supply/discharge system of air conditioning equipment. The wheel transfers the energy (cold or heat) contained in exhaust air to the fresh air supplied to indoor. It’s one important equipment and key technology in the field of construction energy-saving.
Rotary heat exchanger is composed of heat wheel, case, drive system and sealing parts. The heat wheel rotates powered by the drive system. When outdoor air passes through half of the wheel, return air passes through reversely the rest half of the wheel. In this process, about 70% to 90% heat contained in the return air can be recovered to supply air to indoor
.
air. The energy recovery efficiency is up to 70% to 90%.
The sensible heat wheel is made by aluminum foils of 0.05mm thickness.
And the total heat wheel is made by aluminum foils coated with 3A molecular sieve of 0.04mm thickness.
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.
The wave type structure of the wheel forms narrow channels 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.
Double Sealing System
Unique double-sealing system is installed around the rotor periphery and along the central beam. The sealing
materials are soft and dense of small friction and longer service life.
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.
The cleaning effect of the purge sector is bound up with the fan position and static pressure difference between outdoor air side and exhaust air side. When the pressure difference is less than 200pa, the cleaning effect is not guaranteed.
We have developed a calculation program for simple selection of a rotary heat exchanger model. It can not only be
used as a single design selection program, but can also be combined into your program by DLL. We can add it to
your program upon your request, too. Please contact us for the selection program.
side panel of the exchanger casing is unnecessary, except that bypass has been set in AHU.
flange. In this case, side panel of the exchanger is necessary to prevent leakage.
PLEASE Click the following link to get more product information:
1) ECO-SMART HEPA ERV , ErP2018 eco design DMTH series
2) ECO-SMART Plus ERV , Eco design DCTP series
3) Ductless Eco Clean Wall Mounted ERV
4) Ductles Eco Clean Floor standing ERV
5) Slim design ERV, thinner design to save installation space
6) Convention TH series ERV, cheap and simple
7) Plate heat exchanger: counterflowsensible heat exchanger
8) Cross counterflow sensible heat exchanger
9) Total heat exchanger _enthalpy type
Holtop Factory
Holtop is one of the best manufacturer in ERV/HRV, heat exchanger and AHU area in China, founded in 2002, areas covered more than 30,000 square meters, turnover of 2012 is 42 million dollars, we have enthalpy testing lab. for products test. As a leader in energy/heat recovery equipments, we cooperate with more than 30 famous companies who located in Europe, the Middle east, Korea, Southeast Asia, Taiwan, etc. supplied equipment to Beijing Olympic and Shanghai Expo 2010, works together with domestic and international brands like Midea, Haier, Hitachi, etc.
Holtop partner
Holtop cooperate with world famous brand or offer OEM service including Hitachi, LG, McQuay, TRANE, Systemair, Aldes, York, Haier, Gree, MHI Group, Midea, Carrier, Dunham-Bush, etc.
- Step 1Find your interested products by search keywords
- Step 2Contact the supplier by clicking ”Enquire” or “request meeting” button, otherwise, you also could consult our import consultant.
- Step 3After verifying your email, get response from suppliers or our trade manager will contact you as soon as possible
- Step 4Set up meeting with the Chinese supplier without language barrier