GAS (AIR) STREAM HEAT RECOVERY METHOD Russian patent published in 1999 - IPC

FIELD: ventilation and air conditioning systems. SUBSTANCE: put out air is directed into contact device with recirculating water for adiabatic humidification to relative humidity of about 95%. During direct contact of air stream with sprinkled water, wet cleaning of air from dust is provided together with air humidification. Then air whose parameters are close to saturated state is fed to surface heat exchanger-recuperator with intermediate heat carrier for utilization of heat of removed air (gas). EFFECT: reduced heat transfer surface of recuperative heat exchanger with intermediate heat carrier, possibility of cleaning air (gas) from dust and finely divided particles. 2 dwg