摘  要   介绍热泵热水机及其国内外能源效率（能效）标准的状况。通过市场调研我国市场上热泵热水机能效的水平，统计
结果表明约30%的产品达不到GB/T21362-2008中规定的要求。为此，在已有相关标准和技术规范的基础上，通过市场调研统
计分析，提出空气源热泵热水机的能效等级。其能效等级依据COP大小分为5级，1级为最高级，5级为入门级,2级为节能级。
普通型1级COP值为4.7，低温型1级的为3.9。从理论上验证了能效等级的可行性，这可为我国建立热泵热水机能效标准提供
一定的理论参考依据。
关键词   热泵热水机  能源效率  标准  理论分析
 
RESEARCH ON ENERGY
EFFICIENCY GRADE OF HEAT PUMP WATER HEATER
Ma Yitai  Yuan Qiuxia  Zhang Zikun
(Institute of Thermal Energy Research，Tianjin University，Tianjin  300072，China)
 
Abstract    Status of energy efficiency standards of heat pump water heater (HPWH) at home and abroad and HPWHs
have been introduced. The COPs of about 30% HPWHs don’t meet the requirement of GB/T21362-2008 according to
statistical analysis. Therefore, on the base of the present standards and technical specifications, energy efficiency grades
for air-source heat pump water heater are put forward in terms of statistical analysis. According to the value of energy
efficiency, air-source heat pump water heaters (ASHPWH) are classified in 1~5grade.Besides first grade is most high
grade .Fifth grade is least low grade. Second grade is  saving energy grade. The value of COP from the common
ASHPWH in 1 grade is 4.7, and corresponding value from the micro-thermal ASHPWH is 3.9. Energy efficacy grade is
analyzed in the light of theory, and the result shows that it is feasible. Those provide theoretical basis for
enacting energy efficiency standards of HPWH in China.
Keywords    Heat pump water heater (HPWH)   Energy efficiency  Standards