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Study on efficiency improvement of packaged air conditioners for year round cooling (effects of allowable minimum compression ratio and expansion valve capacity).
Author(s) : UEKUSA T., WARAGAI S., NAKAO M.
Summary
Focusing on air conditioners used for year-round cooling, high-efficiency operation at times of low outdoor air temperature can be achieved by lowering the condensing pressure and operating at a low compression ratio. A year-round cooling air conditioner was constructed, and a performance test showed that the COP of the compression cycle could exceed 10 at maximum for an outdoor air temperature of 0 °C. This air conditioner was deployed for one year in Tokyo in the same cooling-load environment: power consumption decreased by about 40% over the year.
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Details
- Original title: Study on efficiency improvement of packaged air conditioners for year round cooling (effects of allowable minimum compression ratio and expansion valve capacity).
- Record ID : 2000-1536
- Languages: English
- Source: 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
- Publication date: 1999/09/19
Links
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Indexing
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Themes:
Other air-conditioning equipment;
Air conditioning in laboratories and industry;
Other energy-saving and energy-recovery systems - Keywords: Winter; Telecommunication; Enhancement; Air conditioner; Temperature; Performance; Optimization; Expansion valve; Thermodynamic cycle; Air conditioning; Condensation
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