流体机械2025，Vol.53Issue(4)：18-23,6.DOI:10.3969/j.issn.1005-0329.2025.04.003
空气源热泵系统电加热延霜的试验研究
Experimental study on electric heating frost retardation for air-source heat pump systems
摘要
Abstract
To address the heating capacity degradation caused by outdoor unit frosting during winter operation of air‑source heat pumps,an electric heater was installed at the inlet pipe of the outdoor heat exchanger to elevate evaporation temperature,delay frosting,and reduce defrosting frequency.Experimental prototypes were tested to compare system performance with/without the electric heater,analyze differences between constant operating parameters and automatic adjustment,and investigate the effects of heater power,compressor frequency,expansion valve opening,and outdoor fan speed on heating performance.Results show that a 560 W heater extends heating duration by 15.1%and increases average heating capacity by 1.6%.Within the 0~735 W power range,heating duration linearly increases with heater power,extending by 2.4 minutes per 100 W increment.This study provides reference for defrosting optimization in air‑source heat pumps.关键词
空气源热泵/延霜/电加热/热舒适性Key words
air‑source heat pump/frost retardation/electric heating/thermal comfort分类
建筑与水利引用本文复制引用
黄东,吴思远,赵日晶,王飞..空气源热泵系统电加热延霜的试验研究[J].流体机械,2025,53(4):18-23,6.基金项目
国家自然科学基金项目(51876154) （51876154）
