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Performance of a 2 Room Multi-Heat Pump with a Constant Speed Compressor  

Kwan Young Chul (Dep. of Mechanical Engineering, Sunmoon University)
Kwon Jeong-Tae (School of Automatic and Mechanical Engineering, Nambu University)
Jeong Ji Hwan (Dep. of Environmental Engineering, Baekseok College)
Lee Sang Jae (Energy Evaluation Team, Korea Testing Laboratory)
Kim Dae Hun (Energy Evaluation Team, Korea Testing Laboratory)
Publication Information
International Journal of Air-Conditioning and Refrigeration / v.12, no.4, 2004 , pp. 184-191 More about this Journal
Abstract
In order to improve the performance of a 2 room heat pump with a constant speed compressor, the optimum refrigeration circuit of the heat pump with different cooling and heating capacities is developed by applying capillary tubes. The refrigeration circuit is composed of four parts; a heating circuit, a cooling circuit, a by-pass circuit and a balance circuit. The performance of the 2 room heat pump are investigated from a rating experiment and a reliability experiment, using the calorimeter. Results of the rating experiment show that the capacity of heat pump is about $93\%$ of the design value. In particular, the capacity of the cooling single operation is about $13\%$ higher than the design value, and the capacity of the heating multi operation is about $5\%$ higher than the design value. From the reliability experi-ment, it is found that the lowest driving voltage of the compressor is about $75\%$ of the rating voltage. Also the compressor is reoperated normally under the flood back and the over load.
Keywords
Heat pump; Rating; Reliability; Capillary tube; Refrigeration circuit; Compressor;
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