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.
Working principle:
FEATURES OF ENERGY RECOVERY WHEELS IN VENTILATORS:
1. High efficiency of total heat and sensible heat recovery
2. Double labyrinth sealing system ensures minimal air leakage.
3. Self-cleaning efforts prolong service cycle, reducing maintenance cost.
4. Double purge sector minimizes carryover from exhaust air into supply air stream.
5. Life-time-lubricated bearing requires no maintenance under normal usage.
6. Interior spokes are used to mechanically bond the rotor's laminations to reinforce the wheel.
7. Completed range of rotor diameter from 500mm to 5000mm, rotor can be cut into 1PC to 24PCS for Easy transportation, various types of housing construction is available as well.
8.Laminar Flow Channels
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.
9.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.
10.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.
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