大温差空气源热泵在供暖系统中的应用

Application of large temperature difference air source heat pump to heating system

为了解决空气源热泵在供暖系统存在的末端匹配性差、系统运行费用高等问题,提出一种适应大温差高效热能输配的热泵系统。通过理论分析和试验验证,对大温差空气源热泵在供暖工程中的应用进行研究,比较大、小温差下的热泵系统的节能效果和供暖效果。研究结果表明:按照GB/T 25127.1—2020测算,采用大温差空气源热泵的制热系统全年制热季节性能系数HSPF可提升57%以上,循环水泵耗电量占比下降73%以上,室内温度变化偏差为±0.2℃,可以推广应用。

In order to solve the problems of poor terminal matching and high system operation cost faced by air source heat pump in heating system applications,a heat pump system suitable for large temperature difference and high efficiency heat energy transmission is proposed.Through theoretical analysis and experimental verification,the application of large temperature difference air source heat pump in heating projects is studiedand the energy-saving and heating effects of heat pump system under large and small temperature differences are compared.The research results show that according to GB/T25127.1-2020,the heating system using the large temperature difference air source heat pump can increase the HSPF(heating seasonal performance factor)by more than 57%throughout the year,the circulating water pump power consumption is reduced by more than 73%,and the indoor temperature variation deviation during system operation is±0.2℃.The system can be promoted vigorously.