摘  要   介紹熱泵熱水機及其國內外能源效率（能效）標準的狀況。通過市場調研我國市場上熱泵熱水機能效的水平，統計
結果表明約30%的產品達不到GB/T21362-2008中規定的要求。為此，在已有相關標準和技術規范的基礎上，通過市場調研統
計分析，提出空氣源熱泵熱水機的能效等級。其能效等級依據COP大小分為5級，1級為最高級，5級為入門級,2級為節能級。
普通型1級COP值為4.7，低溫型1級的為3.9。從理論上驗證了能效等級的可行性，這可為我國建立熱泵熱水機能效標準提供
一定的理論參考依據。
關鍵詞   熱泵熱水機  能源效率  標準  理論分析
 
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