家用空气源CO_2热泵热水器系统特性的试验研究
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摘要
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.
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.
引文
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[15]杨静.关于CO2空气源热泵热水器冬季运行制热量衰减问题的试验研究[J].暖通空调,2015(8):6-8.
[2]PetterNeksa.CO2 heat pump systems[J].International Journal of Refrigeration,2002,25(4):421-427.
[3]刘业凤,朱洪亮,张峰,等.CO2热泵热水器充注量确定及系统试验研究[J].上海理工大学学报,2015(1):49-56.
[4]蔡操平,刘业凤,苏强.跨临界CO2热泵热水器系统的试验研究[J].制冷与空调,2011(1):66-70
[5]刘业凤,蔡操平,陈曦,等.跨临界CO2热泵热水器系统的初步试验研究[C]//全国制冷空调新技术研讨会,2010.
[6]陈琪,佟杨,朱治江,等.CO2空气源热泵热水器的试验研究[J].浙江大学学报(工学版),2012,46(4):610-615.
[7]吕静,马逸平,曹科,等.水冷套管式CO2气冷器的设计及试验研究[J].制冷学报,2016,37(2):113-118.
[8]杨世铭.传热学:第4版[M].北京:高等教育出版社,2013:486.
[9]廉乐明.工程热力学:第5版[M].北京:中国建筑工业出版社,2013:216.
[10]彦启森,石文星.空气调节用制冷技术:第4版[M].北京:中国建筑工业出版社,2014:60.
[11]杨永光,刑桂坤,范吉全.工业制冷系统压缩机选型[J].化工设备与管道,2017,54(6):43-46.
[12]王超,陶乐仁,申玲,等.空气源热泵热水器试验台的设计[J].流体机械,2016,44(8):65-68.
[13]张超,吕新刚,胡冬阳,等.低温空气源CO2热泵热水器系统特性研究[J].流体机械,2017,45(11):66-71.
[14]周祖毅.关于空气源热泵机组冬季运行制热量衰减问题的思考[J].暖通空调,2006,36(6):42-43.
[15]杨静.关于CO2空气源热泵热水器冬季运行制热量衰减问题的试验研究[J].暖通空调,2015(8):6-8.