排熱回収型高温ヒートポンプにおけるシミュレーションと実験

抄録

This paper describes theoretical and experimental study on heat recovery high temperature heat pumps. Firstly, two examples of trans-critical cycle heat pumps using CO₂ or butane as each refrigerant are simulated. Secondly, sub-critical cycle heat pumps using R1234yf are discussed. A sub-critical cycle heat pump with small degree of sub-cooling are simulated for low temperature-rise heating. And, a sub-critical heat pump cycle with large degree of sub-cooling are simulated for high temperature-rise heating. Further, a test apparatus is presented.