江阴市某建筑地源热泵系统性能的数值模拟  

The ground source heat pump numerical simulation of a building in Jiangyin

作　　者：刘广平[1,2,3,4] 骆超 龚宇烈[1,2,3] 邱泽晶 郑鑫[5,6] LIU Guangping;LUO Chao;GONG Yulie;QIU Zejing;ZHENG Xin(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China;Key Laboratory of Renewable Energy,Chinese Academy of Science,Guangzhou 510640,Guangdong,China;Guangdong Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,Guangdong,China;University of Chinese Academy of Sciences,Beijing 100049,China;Nari Group Corporation(State Grid Electric Power Research Institute),Nanjing 211000,Jiangsu,China;Nari(Wuhan) Electrical Equipment & Engineering Efficiency Evaluation Center,Wuhan 430074,Hubei,China)

机构地区：[1]中国科学院广州能源研究所,广东广州510640 [2]中国科学院可再生能源重点实验室,广东广州510640 [3]广东省新能源和可再生能源研究开发与应用重点实验室,广东广州510640 [4]中国科学院大学,北京100049 [5]南瑞集团公司(国网电力科学研究院),江苏南京211000 [6]南瑞(武汉)电气设备与工程能效测评中心,湖北武汉430074

出　　处：《化工进展》2017年第11期4037-4042,共6页Chemical Industry and Engineering Progress

基　　金：国家电网公司科学技术项目(SGTYHT/15-JS-191)

摘　　要：针对江阴市某建筑的地源热泵系统,利用TRNSYS软件,分别模拟不同埋管深度和不同冷热负荷比情况下,运行30年土壤平均温度的变化情况,分析了冬夏季供暖空调期内系统性能系数COP及热泵机组部分负荷率的变化情况,模拟结果表明,100m埋管深度比60m和80m埋管深度温度波动较小且温降较小,稳定性较好;在分别只满足热负荷和冷负荷需求的情况下,土壤平均温度分别下降了2.67℃和上升了2.15℃,而在满足冷热负荷需求时温度只下降了0.66℃,此时系统的稳定性最好;热泵机组供暖空调期内系统的供暖平均COP为2.75,制冷平均COP为3.28,热泵机组部分负荷率处于较低水平,这也导致了系统全年的COP偏低的现象。该别墅的地源热泵系统的数值模拟结果为长江三角区地源热泵系统工程提供了技术支撑。This paper introduces the ground-source heat pump for a construction in Jiangyin.Using the software of TRNSYS,the underground soil average temperature in30years was simulated under the different depths and ratios of cooling and heating loads.The annual trend of COP of the system and part load ratio of heat pump unit in heating and cooling period werer analyzed.The result showed that the performance of buried pipe at100m depth had a smaller temperature drop and fluctuation than that at80m and60m depths.So the deeper the buried pipes were,the more stable of soil average temperatures were.To meet the demand of heating load only,the soil average temperature fell by2.67℃,while the soil average temperature increased by2.15℃to meet the demand of cooling load nly.If to meet the demand of both heating and cooling loads,the soil average temperature fell by just0.66℃.The averaged COP of the heat pump system was3.28in the summer and2.75in the winter;and the part load ratio of heat pump unit was low,which resulted in the lower COP of the system.The simulation results provided the basic data for the heat pump project in Yangtze River area.

关 键 词：再生能源 地源热泵 数值模拟 地埋管换热器 性能系数 稳定性 

分 类 号：TK529[动力工程及工程热物理—热能工程]