能源工程2024，Vol.44Issue(2)：13-19,7.DOI:10.16189/j.nygc.2024.02.003
低温环境下低温热水主动抑霜增效的蒸发器流动与传热数值模拟
Numerical simulation of flow and heat transfer in evaporator with active defrosting and enhancement of low temperature hot water
摘要
Abstract
In view of the defects of the air source heat pump operating at low temperature,an air source heat pump with active frost suppression and efficiency improvement was designed with the addition of hot return water pipe on the windward side of the evaporator.Taking the evaporator components in the system as the research object,the effects of tube spacing,fin spacing,tube type and row number on the air side performance of the common tubular finned evaporator and the proposed new evaporator were compared and analyzed by numerical simulation software Fluent.The results show that in the simulated basin,the whole temperature of the new evaporator increases,the flow resistance does not change,and the outlet temperature is at least 2℃higher than that of the ordinary evaporator.After considering the influence of pipe spacing,fin spacing,pipe type and pipe row number,small pipe spacing,fin spacing of 1.5mm,front elliptic and back circular pipe type combination multi-row pipe can be selected.关键词
数值模拟/蒸发器/主动抑霜/空气源热泵/流阻Key words
numerical simulation/evaporator/active defrosting/air source heat pump/flow resistance分类
建筑与水利引用本文复制引用
夏雨萍,罗会龙,赵洪超,王鑫宇..低温环境下低温热水主动抑霜增效的蒸发器流动与传热数值模拟[J].能源工程,2024,44(2):13-19,7.基金项目
国家自然科学基金项目(52166001) （52166001）
