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对我国热泵热水机的能效现状进行调研,结果显示有约1/3的空气源普通型热泵热水机及超过1/2的水源热泵热水机产品的COPh不能达到GB/T 21362—2008中相应要求。提出采用热力学完善度(η)分析的方法,并参照我国现有房间空调器、单元式空调机及冷水机组的能效等级标准,分析热泵热水机的能效等级标准。建议该标准分为3级,其中水源式1～3级COPh/ηh依次为5.1/0.407、4.8/0.382、4.5/0.359,空气源普通式相应值依次为4.3/0.296、4.0/0.276、3.7/0.255。
Investigation of the energy efficiency of heat pump water heaters in China showed that about 1/3 of the air source ordinary heat pump water heaters and more than 1/2 of the water source heat pump water heaters do not meet the COPh GB / T 21362-2008 In the corresponding requirements. The method of thermodynamic improvement (η) analysis is proposed and the energy efficiency rating standards of heat pump water heaters are analyzed with reference to the energy efficiency rating standards of the existing room air conditioners, unit air conditioners and chillers. It is recommended that the standard be divided into three grades, of which the COPh / ηh of water source grades 1 ~ 3 are 5.1 / 0.407, 4.8 / 0.382, 4.5 / 0.359, and the corresponding values of common air source are 4.3 / 0.296, 4.0 / 0.276, 3.7 / 0.255.