Derivation of Ideal Heat Pump Cycle for Hot Water Supply and Its COP and Evaluation of Hopeful Refrigerant

DOI Web Site Open Access
  • SAIKAWA Michiyuki
    Energy Engineering Research Laboratory, Central Research Institute of Electric Power Industry

Bibliographic Information

Other Title
  • 給湯用理想ヒートポンプサイクル及びその成績係数（ＣＯＰ）の導出と各冷媒の上具ＣＯＰの評価

Search this article

Description

The reverse Carnot cycle, the high and low heat source of which are constant temperatures, decides the theoretical limit of COP of conventional heat pumps used as air conditioners etc. But the cycle which decides the theoretical limit of COP of a heat pump used as tap water heater is defined as the cycle whose high heat source varies temperature with constant specific heat, because the specific heat of tap water is constant and tap water heating with high temperature rise is needed. In this paper, the COP of this ideal cycle is clarified. And upper limit of COP of heat pump cycle with various refrigerants for tap water heating is studied and finally the refrigerant which achieves the highest COP for supplying hot water is clarified.

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top