建筑负荷率及回水温度对地源热泵效率的影响研究  

Research on Influence of Building Load Rate and Return Water Temperature on Efficiency of Ground Source Heat Pump

作　　者：丑雪松 李妍[2] 朱林 陶进 庄月 CHOU Xuesong;LI Yan;ZHU Lin;TAO Jin;ZHUANG Yue(Jilin University of Architecture and Technology,Changchun 130114,Jilin Province,China;Jilin Jianzhu University,Changchun 130118,Jilin Province,China)

机构地区：[1]吉林建筑科技学院,吉林长春130114 [2]吉林建筑大学,吉林长春130118

出　　处：《天津科技》2024年第11期11-15,共5页Tianjin Science & Technology

基　　金：吉林省发改委项目“严寒地区浅层+中深层地热能供暖关键技术研究与实践”(2023C033-2)。

摘　　要：地源热泵是地热能利用的有效工具,在可持续发展领域作用显著。依托长春市某高校近零能耗建筑中的地源热泵供暖系统,对不同建筑负荷率及在不同的冷凝器(负荷侧)回水温度工况下热泵机组制热效率的变化规律进行研究,旨在优化地源热泵系统在近零能耗建筑中的应用,并使其高效运行。研究表明:随着机组负荷侧设定回水温度的不断升高,机组制热效率不断下降;建筑负荷率在75%时,机组制热效率达到最高;建筑负荷率低于55%时,机组制热效率下降明显。这为严寒地区近零能耗建筑中地源热泵系统的优化运行提供了数据支撑。Ground source heat pump is an effective tool for geothermal energy utilization and plays a significant role in the field of sustainable development.Based on the ground source heat pump heating system in a near zero energy building of a university in Changchun,this study investigates the variation of heating efficiency of heat pump units under different load rates and return water temperature conditions of condensers(load side)in the building.The aim is to optimize the application of ground source heat pump systems in near zero energy buildings and ensure their efficient operation.Research shows that as the set return water temperature on the load side of the unit continuously increases,the heating efficiency of the unit continuously decreases.When the building load rate is 75%,the unit heating efficiency can reach its maximum,and when it is below 55%,the efficiency decreases significantly.

关 键 词：负荷率 冷凝器回水温度 近零能耗建筑 热泵制热效率 

分 类 号：TU833[建筑科学—供热、供燃气、通风及空调工程]