Performance Evaluation of a Hot-Water Supply System Utilizing Wasted Heat of an Air-Conditioning Machine
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概要
- 論文の詳細を見る
A hot-water supply system was constructed to utilize wasted heat of an air-conditioning system with HFC134a refrigerant. A desuperheater was equipped ahead of the condenser of an air-conditioning machine to extract thermal energy of compressed high-temperature refrigerant. HFC134a was selected as refrigerant because its pressure was relatively lower at higher temperature. The required refrigerant charge was investigated and performance of the air conditioning system with/without a desuperheater was compared to assess the effect of installing a desuperheater. It was concluded that the required refrigerant charge increased by installing a desuperheater, and that the ability of cooling heat exchange was similar for both with/without a desuperheater with required refrigerant charges. It was also shown that cooling COP decreased 15% by installing a desuperheater, because the work done by the compressor increased, but the overall energy efficiency including cooling and hot-water supply increased 34%.
著者
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Hasegawa Tatsuya
Ecotopia Science Institute Nagoya University
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Suzuki Hideyuki
Department Of Bio-medical Engineering School Of High-technology For Human Welfare Tokai University
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GOTO Makoto
Department of Aerospace Engineering, Nagoya University
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OHUCHIDA Satoshi
Department of Aerospace Engineering, Nagoya University
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YAMAUCHI Tomohiro
Department of Aerospace Engineering, Nagoya University
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NAGATA Kenji
Nagoya Institute of Technology
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UENO Isao
Eco and Economy System Institute Co., Ltd.
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