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2019, v.47;No.560(02) 70-74

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家用空气源CO_2热泵热水器系统特性的试验研究
Experimental Study on Characteristics of Household CO_2 Air-source Heat Pump Water Heater

刘泽勤;张艺;李向阳;
Liu Zeqin;Zhang Yi;Li Xiangyang;Tianjin University of Commerce,School of Mechanical Engineering,Engineering Research Center of the Ministry of Education of Refrigeration Technology,Key Laboratory of Tianjin Refrigeration Technology;

摘要(Abstract):

由于CO_2具有环保和独特的热力学优势,其用于家用热泵热水器领域已获得巨大的发展。为研究CO_2热泵热水器系统运行特性受外界因素影响的变化规律,自行搭建了一台空气源CO_2热泵热水器试验台开展试验研究。试验表明随着冷却水体积流量从48.94 L/h增加到75.2 L/h,空气源CO_2热泵热水器系统制热量提升49%,制热系数比原来增加了0.7倍;随着室外环境温度从-3℃升高到13℃,空气源CO_2热泵热水器系统制热量提升28%,制热系数比原来增加了1.5倍,室外环境温度对压缩机的吸气压力影响较大。本文的试验研究结果为后续的CO_2空气源热泵热水器的系统优化提供技术支持。
Due to the environmental protection and unique thermodynamic advantages of CO_2,its application in household heat pump water heaters has achieved great development. In order to study the influence of external factors on the operating characteristics of the CO_2 heat pump water heater system,a test bench for air source CO_2 heat pump water heater was set up to conduct experimental study. The tests show that with the increase of volume flow of cooling water from 48.94 L/h to 75.2 L/h,the heating capacity of the air-source CO_2 heat pump water heater was increased by 49%,and the heating COP was increased by 0.7 time of the original heating COP.With the increase of the outdoor ambient temperature from-3 ℃ to 13 ℃,the heating capacity of the air-source CO_2 heat pump water heater was increased by 28%,and the heating COP was increased by 1.5 times of the original heating COP. The outdoor ambient temperature has a greater effect on the suction pressure of the compressor. The test results in this paper provide technical support for the subsequent system optimization of CO_2 air-source heat pump water heater.

关键词(KeyWords): 空气源热泵;跨临界循环;CO_2热泵热水器;系统性能;试验研究
air-source heat pump;transcritical cycle;CO_2 heat pump water heater;system performance;experimental study

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作者(Author): 刘泽勤;张艺;李向阳;
Liu Zeqin;Zhang Yi;Li Xiangyang;Tianjin University of Commerce,School of Mechanical Engineering,Engineering Research Center of the Ministry of Education of Refrigeration Technology,Key Laboratory of Tianjin Refrigeration Technology;

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