Development of Heat Exchangers for Air-conditioners Capable of Supplying High-temperature (80°C) Air
Abstract
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.- Publication:
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Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers
- Pub Date:
- 2011
- Bibcode:
- 2011TRACE..12..185I
- Keywords:
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- Heat Exchanger;
- High-Temperature;
- Air;
- HCFC-22;
- Air-Conditioner Condenser;
- Counter-Flow