抄録
A new kind of heat exchanger for air conditioners was studied analytically and experimentally and the following results were obtained.
To supply high-temperature air, it is effective to use "Pair Heat Exchangers" where fins are separated between pipe rows and the refrigerant flows counter-crosswise to the air flow.
These heat exchangers enabled air at 80°C to be supplied by HCFC-22 air-conditioners when the discharge pressure was 3.0 MPa and refrigerant temperature at the inlet of heat exchanger was 120°C.
The main effect of dividing fins is to prevent heat conduction between pipe rows through the fins.
