严寒地区太阳能-土壤源热泵复合系统运行特性研究  

Simulation on Operation Characteristics of a Solar-Ground Source Heat Pump Composite System in Cold Region

作　　者：李江辉 陈颖 朱逸飞 杨震 李文欣 施娟[3] LI Jianghui;CHEN Ying;ZHU Yifei;YANG Zhen;LI Wenxin;SHI Juan(Suzhou Rail Transit Group Co.,Ltd,Suzhou 215004,Jiangsu,China;Guangzhou Metro Design and Research Institute Co.,Ltd,Guangzhou 510010,China;School of Energy and Environment,Southeast University,Nanjing 210096,China)

机构地区：[1]苏州市轨道交通集团有限公司,江苏苏州215004 [2]广州地铁设计研究院股份有限公司,广州510010 [3]东南大学能源与环境学院,南京210096

出　　处：《建筑节能（中英文）》2024年第8期18-25,共8页Building Energy Efficiency

摘　　要：在极端寒冷区域通过增加辅助供热手段即引入太阳能,巧妙利用过渡季节的太阳能资源对土壤进行预热储存,进而在冬季时增强系统整体的运行效率与能源利用率,从而应对土壤源热泵系统在极端寒冷区域因为面临冷热负荷显著失衡导致系统的能效直接被削弱的问题。负荷模拟研究案例选定沈阳市一幢典型3层办公建筑,采用瞬态系统模拟软件计算15年全生命周期内太阳能-土壤源热泵复合系统的运行特性。该系统会有效提升土壤温度,冬季系统COP增幅6.7%,全年增幅3.8%,验证了通过蓄热方式减少地埋管数量的可行性。为降低系统总成本,对太阳能集热器面积和地埋管数量进行匹配及优化,提出了不同集热器和地埋管成本的最优组合,给出适用于严寒地区的土壤源热泵系统并应用于严寒地区土壤源热泵系统的方法与策略。In extreme cold areas,solar energy is introduced by adding auxiliary heating means,and the solar energy resources in transition seasons are skillfully used to preheat the soil and store heat inside,so as to enhance the overall operating efficiency and energy utilization rate of the system in winter,thus solving the problem that the energy efficiency of the ground source heat pump system is directly weakened in extreme cold areas because of the obvious imbalance of cooling and heating loads.A typical three-story office building in Shenyang is selected as the load simulation case,and the operating characteristics of the solar-ground source heat pump composite system in the period of 15 years are calculated by transient system simulation software.The system can effectively raise the soil temperature,and the COP of the system increases by 6.7%in winter and 3.8%in the whole year,which verifies the feasibility of reducing the number of buried pipes by heat storage.In order to reduce the total cost of the system,the area of solar collectors and the number of underground pipes are optimized,and the optimal combination of the costs of different collectors and underground pipes is proposed,and the methods and strategies of applying the ground source heat pump system suitable for severe cold areas are analyzed.

关 键 词：土壤源热泵 太阳能-土壤源热泵 复合系统 TRNSYS 严寒地区 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]