抄録
To reduce energy consumption utilizing heat recovery systems is increasingly important in industrial applications. The screening of refrigerants is discussed with a case study for high temperature heat pump cycles in this study. The overall coefficients of performance of four different cycle configurations to increase water temperature up to 160 °C using waste heat of 80 °C are thermodynamically compared for several selected refrigerants. This case study suggests that a multiple stage cycle drastically reduces throttling loss in expansion valve and exergy loss in condensers, and consequently achieves the highest overall coefficient of performance (COP) among the cases with a refrigerant having the critical temperature about the target outlet water temperature. Considering many practical benefits, also a cascade cycle that performs relatively high COP can become an expedient solution.
寄稿の翻訳タイトル | Thermodynamic Analysis on High-Temperature Heat Pump Cycles for Heat Recovery |
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本文言語 | 日本語 |
ページ(範囲) | 133-144 |
ページ数 | 12 |
ジャーナル | 日本冷凍空調学会論文集 |
巻 | 31 |
号 | 2 |
DOI | |
出版ステータス | 出版済み - 2014 |