制冷学报2024，Vol.45Issue(2)：74-80,7.DOI:10.3969/j.issn.0253-4339.2024.02.074
R32热泵系统稳定性与变工况特性实验研究
Experimental Study on the Robustness and Off-design Performances of R32 Heat Pump System
摘要
Abstract
The effects of an expansion valve opening on the robustness and system performance of an R32 heat pump system under variable heat source inlet temperatures and hot-water inlet temperatures are studied.The results show that the system has different superheat oscillation ranges under different operating conditions,and the heat source inlet temperature has a significant effect on the initial oscillation superheat,whereas the hot water inlet temperature has no obvious effect on it.Under the variable heat source inlet temperature(15-25℃)conditions,the heating capacities show different variation trends with the superheat,whereas the COP shows the same changing trends,and the maximum COP of the system is obtained within the superheat oscillation range.Under the variable hot water inlet temperature(30-40℃)conditions,the heating capacities and COP show the same trends with the superheat,and both of them reach the maximum values in the superheat oscillation range.Both the increase in the heat source inlet temperature and the decrease in the hot water inlet temperature can increase the maximum heating capacity and the maximum COP,which are 9.287 kW and 4.646,respectively when the heat source inlet temperature is 25℃,and 9.148 kW and 5.665,respectively,when the hot water inlet temperature is 30℃.关键词
系统稳定性/过热度振荡/热泵系统/变工况特性/R32Key words
system robustness/superheat oscillation/heat pump system/off-design performances/R32分类
通用工业技术引用本文复制引用
巨福军,杨文欢,周晓磊,范晓伟,范院飞,尹路梅,朱振华..R32热泵系统稳定性与变工况特性实验研究[J].制冷学报,2024,45(2):74-80,7.基金项目
国家自然科学基金(51176207)资助项目.(The project was supported by the National Natural Science Foundation of China(No.51176207).) 本文受河南省青年科学基金项目(212300410317) （51176207）
河南省科技攻关计划项目(222102320076) （222102320076）
中原工学院青年人才创新能力基金项目(K2020QN013)资助.(The project was supported by Henan Provincial Youth Science Foundation Project(No.212300410317),Henan Provincial Science and Technology Planning Project(No.222102320076),and Zhongyuan Univer-sity of Technology Young Talent Innovation Ability Fund Project(No.K2020QN013).) （K2020QN013）
