基于TRNSYS的严寒地区地热辅助的空气源热泵系统研究  

Study on geothermal-assisted air source heat pump system in cold region based on TRNSYS

作　　者：黄凯良[1] 侯旭 冯国会[1] HUANG Kailiang;HOU Xu;FENG Guohui(Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]沈阳建筑大学,沈阳110168

出　　处：《流体机械》2023年第7期83-90,共8页Fluid Machinery

基　　金：国家重点研发计划子课题项目(2019YFE0100300);辽宁省高等学校创新人才项目(2020389);沈阳市科学技术计划项目(21-108-9-03)。

摘　　要：针对空气源热泵在严寒地区运行能效受室外低温影响较大的问题,本文通过换热器模块把土壤区域换热器与空气源热泵系统并联,设计了地热辅助的空气源热泵系统,并通过TRNSYSY模拟软件对空气源热泵(ASHP)与地热辅助的空气源热泵(AGAASHP)系统进行对比分析。模拟结果表明:AGAASHP耦合系统的采暖季平均COP为2.37,供暖水温达到45℃以上,且AGAASHP系统的供热效果优于ASHP系统;同时,通过土壤区域换热器埋管深度的单目标优化设计,耦合系统在保障土壤热平衡和良好供暖效果的基础上,优化了5%比例的埋管深度,在一定程度上节省了系统初投资。耦合系统相对于单空气源系统而言,不仅提高了供热稳定性,且可以解决供暖季最不利工况下空气源热泵适应性不足的问题,更加的高效节能。In order to address the problem that the energy efficiency of air source heat pump operation in cold regions is greatly affected by low outdoor temperatures,this paper designed a geothermal-assisted air source heat pump system by coupling the soil zone heat exchanger with the air source heat pump system in parallel through the heat exchanger module,and compared and analyzed the air source heat pump(ASHP)and geothermal-assisted air source heat pump(AGAASHP)systems through TRNSYSY simulation software.The simulation results show that the average COP of the AGAASHP coupled system in the heating season is 2.37,the heating water temperature reaches more than 45℃,and the heating effect of the AGAASHP system is better than that of the ASHP system;meanwhile,through the single objective optimization design of the buried pipe depth of the heat exchanger in the soil area,the coupled system optimizes 5%proportion of the buried pipe depth on the basis of guaranteeing the soil heat balance and good heating effect,which saves the initial investment of the system to a certain extent.Compared with the single air source system,the coupled system not only improves the heating stability,but also solves the problem of insufficient adaptability of the air source heat pump under the most unfavorable working conditions in the heating season,which is more efficient and energy-saving.

关 键 词：空气源热泵 TRNSYS模拟 AGAASHP系统 土壤热平衡 高效节能 

分 类 号：TH3[机械工程—机械制造及自动化] TU883[建筑科学]