补气增焓空气源热泵系统性能试验研究
|
摘要
介绍以R134a为工质的涡旋式补气增焓空气源热泵系统,并搭建试验台对该系统的性能进行变工况试验,与常规单级系统进行对比,获得2个系统排气温度、输入功率、制热量以及能效比随水箱温度的变化规律。试验结果表明:当环境温度为20℃,水箱温度为30～75℃时,在排气温度达到97℃时,常规单级系统水箱温度为55℃,而补气增焓系统水箱温度为75℃,补气增焓系统可以制取更高温度的热水;在水箱温度分别达到40℃,45℃,50℃和55℃时,补气增焓系统与常规单级系统相比,输入功率增大幅度分别为9%,10%,11%和8%,制热量提升幅度分别为20%,21%,25%和25%,COP提升幅度分别为11%,9%,14%和16%。
The scroll air source heat pump system with enhanced vapor injection using R134 a as the working fluid is introduced,and a test bench is set up to carry out experimental research on the performance of the system under variable conditions.Compared with the conventional single-stage system,the varying regulations of exhaust temperature,input power,heating capacity and energy efficiency ratio with the water tank temperature are obtained.The experimental results show that under the condition of that the ambient temperature is 20℃and the water tank temperature is 30-75 ℃,when the exhaust temperature reaches 97 ℃,the water tank temperature of the conventional single-stage system is 55℃,while the water tank temperature of the enhanced vapor injection system is 75℃,and this system can obtain hot water at a higher temperature;when the water tank temperature reaches 40℃,45℃,50℃ and 55 ℃ respectively,compared this system with the conventional singlestage system,the power inputs can be increased by 9%,10%,11% and 8% respectively,the heating capacities can be increased by 20%,21%,25% and25%respectively,and the COP can be increased by 11%,9%,14% and 16% respectively.
The scroll air source heat pump system with enhanced vapor injection using R134 a as the working fluid is introduced,and a test bench is set up to carry out experimental research on the performance of the system under variable conditions.Compared with the conventional single-stage system,the varying regulations of exhaust temperature,input power,heating capacity and energy efficiency ratio with the water tank temperature are obtained.The experimental results show that under the condition of that the ambient temperature is 20℃and the water tank temperature is 30-75 ℃,when the exhaust temperature reaches 97 ℃,the water tank temperature of the conventional single-stage system is 55℃,while the water tank temperature of the enhanced vapor injection system is 75℃,and this system can obtain hot water at a higher temperature;when the water tank temperature reaches 40℃,45℃,50℃ and 55 ℃ respectively,compared this system with the conventional singlestage system,the power inputs can be increased by 9%,10%,11% and 8% respectively,the heating capacities can be increased by 20%,21%,25% and25%respectively,and the COP can be increased by 11%,9%,14% and 16% respectively.
引文
[1]张路,张海松,徐小洁.高温水源热泵在温泉酒店的应用[J].建筑热能通风空调,2014,33(3):88-90.
[2]熊杨.“高温热泵”在金属加工业的典型应用[J].暖通空调,2012,42(2):27-28.
[3]张骏,陈晓园.低温制热工况空调器最佳除霜起始点的实验研究[J].制冷技术,2016,36(6):46-49.
[4]樊玢.热泵热水器水箱内水温分布的研究[J].制冷技术,2012,32(4):26-28.
[5]周岳,赵晓玥,唐贝茗,等.采用自然对流换热的空气源热泵热水器实验研究[J].制冷技术,2015,35(2):13-17.
[6]王喜春.夏热冬冷地区居住建筑围护结构节能技术气候适应性研究[J].制冷技术,2016,36(2):26-29.
[7]姚晶珊,陈剑波,白建民.不同环境温度下复叠式空气源热泵高温热水系统运行特性研究[C]∥上海市制冷学会2011年学术年会论文集.2011.
[8]杨卫卫,曹兴起,何雅玲,等.一种带中间换热器的双热源高温热泵系统[J].西安交通大学学报,2014,48(11):70-80.
[9]马国远,彦启森.涡旋压缩机经济器系统的性能分析[J].制冷学报,2003(3):20-24.
[10]刘强,樊水冲,何珊.喷气增焓涡旋压缩机在空气源热泵热水器中的应用[J].流体机械,2008,36(9):69-72.
[11]孟登居,黄虎,陆春林.提高空气源热泵热水器低温环境性能理论分析[J].中国建设信息供热制冷,2007(8):27-29.
[12]王林,陈光明,陈斌,等.一种用于低温环境下新型空气源热泵循环研究[J].制冷学报,2005(2):34-38.
[13]HEO J,JEONG M W,BAEK C,et al.Comparison of the heating performance of air-source heat pumps using various types of refrigerant injection[J].International Journal of Refrigeration,2011,34(2):444-453.
[14]BERTSCH S S,GROLL E A.Two-stage air-source heat pump for residential heating and cooling applications in northern U.S.climates[J].International Journal of Refrigeration,2008,31(7):1282-1292.
[15]WANG B L,SHI W X,LI X T,et al.Numerical research on the scroll compressor with refrigeration injection[J].Applied Thermal Engineering,2008,28(5-6):440-449.
[2]熊杨.“高温热泵”在金属加工业的典型应用[J].暖通空调,2012,42(2):27-28.
[3]张骏,陈晓园.低温制热工况空调器最佳除霜起始点的实验研究[J].制冷技术,2016,36(6):46-49.
[4]樊玢.热泵热水器水箱内水温分布的研究[J].制冷技术,2012,32(4):26-28.
[5]周岳,赵晓玥,唐贝茗,等.采用自然对流换热的空气源热泵热水器实验研究[J].制冷技术,2015,35(2):13-17.
[6]王喜春.夏热冬冷地区居住建筑围护结构节能技术气候适应性研究[J].制冷技术,2016,36(2):26-29.
[7]姚晶珊,陈剑波,白建民.不同环境温度下复叠式空气源热泵高温热水系统运行特性研究[C]∥上海市制冷学会2011年学术年会论文集.2011.
[8]杨卫卫,曹兴起,何雅玲,等.一种带中间换热器的双热源高温热泵系统[J].西安交通大学学报,2014,48(11):70-80.
[9]马国远,彦启森.涡旋压缩机经济器系统的性能分析[J].制冷学报,2003(3):20-24.
[10]刘强,樊水冲,何珊.喷气增焓涡旋压缩机在空气源热泵热水器中的应用[J].流体机械,2008,36(9):69-72.
[11]孟登居,黄虎,陆春林.提高空气源热泵热水器低温环境性能理论分析[J].中国建设信息供热制冷,2007(8):27-29.
[12]王林,陈光明,陈斌,等.一种用于低温环境下新型空气源热泵循环研究[J].制冷学报,2005(2):34-38.
[13]HEO J,JEONG M W,BAEK C,et al.Comparison of the heating performance of air-source heat pumps using various types of refrigerant injection[J].International Journal of Refrigeration,2011,34(2):444-453.
[14]BERTSCH S S,GROLL E A.Two-stage air-source heat pump for residential heating and cooling applications in northern U.S.climates[J].International Journal of Refrigeration,2008,31(7):1282-1292.
[15]WANG B L,SHI W X,LI X T,et al.Numerical research on the scroll compressor with refrigeration injection[J].Applied Thermal Engineering,2008,28(5-6):440-449.