【摘要】 从热泵热水器的原理和基本理论循环出发,分别对R22、R134a、R407C和R417a四种工质进行理论计算和对比分析,以便对热泵热水器的设计提供一定的参考。结果表明,四种工质中R134a和R417a最具推广价值,其结果还有待实验进行进一步论证。更多还原

【Abstract】 From the principle and basic theory circulation of the heat pump water heater, this paper carries on the theoretical calculation and the contrast analysis to four kinds of refrigerant (R22, R134a, R407c and R417a) separately, in order to offer certain reference to the design of the heat pump water heater. The result indicates that, among four kinds of refrigerant , R134a and R417a have the most promoted value, it is worth further promoting, and its result also waits for the experiment to carry on the further proves.更多还原