EXPERIENCES FROM AIR-BASED HEAT PUMPS IN COLD DISTRICTS.

Type of article: Article

Summary

MOST OF THE SMALL-AND MEDIUM-SIZED AIR-BASED HEAT PUMPS IN NORWAY ARE EQUIPPED WITH AIR COOLERS WITH NARROW FIN SPACING (1-3 MM) WHICH REQUIRE FREQUENT DEFROSTING. IN THE SOUTHERN AND WESTERN PARTS OF THE COUNTRY WHERE THERE IS A MILD COASTAL CLIMATE, THESE HEAT PUMPS PERFORM WELL. THERE ARE SOME AIR-BASED HEAT PUMPS IN COLDER PARTS OF THE COUNTRY, ON THE OTHER HAND, THAT HAVE NOT FUNCTIONED SATISFACTORILY. EXPERIENCE SHOWS THAT HEAT PUMP EVAPORATORS, WHICH MAINLY OPERATE AT OUTDOOR TEMPERATURES WITHIN THE RANGES OF 273 TO 263 K (0 TO -10 DEG C) AND IN HIGH RELATIVE HUMIDITY, REQUIRE INCREASED FIN SPACING COMPARED TO THE STANDARD UNITS DEVELOPED FOR THE AIR-CONDITIONING MARKET.

Details

Original title: EXPERIENCES FROM AIR-BASED HEAT PUMPS IN COLD DISTRICTS.
Record ID : 1992-1374
Languages: English
Source: IEA HPC Newsl. - vol. 9 - n. 2
Publication date: 1991/06
Document available for consultation in the library of the IIR headquarters only.

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Indexing

Themes: Heat pumps techniques;
Residential heat-pumps
Keywords: Finned tube; Single-family house; Air; Heat pump; Norway; Evaporator; Defrosting; Heat exchanger