摘要
为提高空气源热泵供热系统的实际运行性能,在2019—2020年供暖季对邯郸地区某老旧小区空气源热泵供热系统进行了现场测试,根据室外空气温湿度、系统供回水温度及流量、耗电量的实测数据和变水温运行调节方式,对系统长期运行性能进行了分析,对比了4种工况条件下的系统运行特性。测试分析结果表明:对于整个供暖期的能耗而言,分阶段变水温调节有利于促进空气源热泵节能运行。邯郸地区冬季室外相对湿度较高,容易导致空气源热泵运行效果不佳、供热量不足。此时在分阶段变水温调节的基础上采用分时段变水温调节,有利于改善系统运行效果,供暖期第Ⅱ阶段的COP′由1.63提高至第Ⅲ阶段的1.76,提高了8%。
An air-source heat pump(ASHP)heating system was used to improve the performance of the heating system in an old community of Handan and field test was conducted during the heating season of 2019-2020.In addition,the long-term operating performance was analyzed and the operating characteristics of the system under four different working conditions were compared based on the air temperature and humidity outdoors,temperature and flow rate of the supply and return water,the power consumption,and the practical regulation mode with variable water temperature.The results show that for the energy consumption of the entire heating period,a staged variable water temperature adjustment is beneficial for promoting the energy-saving rate of the air-source heat pump.The high outdoor relative humidity in Handan during winter can easily lead to poor operation of the air-source heat pumps and an insufficient heat supply.At this time,the use of a time-varying water temperature adjustment is more beneficial than the staged variable water temperature regulation for improving the system operation.The COP of the second stage of the heating period increased from 1.63 to 1.76 in the third stage,which is an increase of 8%.
作者
熊楚超
罗景辉
王景刚
魏莹
刘欢
侯立泉
Xiong Chuchao;Luo Jinghui;Wang Jinggang;Wei Ying;Liu Huan;Hou Liquan(School of Energy and Environmental Engineering, Hebei University of Engineering, Handan, 056038, China;Hebei HVAC Technology Innovation Center, Handan, 056038, China)
出处
《制冷学报》
CAS
CSCD
北大核心
2021年第1期111-116,139,共7页
Journal of Refrigeration
基金
中央引导地方科技发展专项项目(19944508G)
河北省创新能力提升计划项目(19454601D)资助
关键词
空气源热泵
供暖
变水温
运行特性
air-source heat pump
heating
variable water temperature operation
operating characteristics
