基于地源热泵的多种辅助热源方案比较分析  

Comparative Analysis of Multiple Auxiliary Heating Source Schemes Based on Ground-source Heat Pump

作　　者：许抗吾 魏俊辉 孙林娜 鲍超 刘启明[1] XU Kangwu;WEI Junhui;SUN Linna;BAO Chao;LIU Qiming(BGI Engineering Consultants Ltd,Beijing 100038,China)

机构地区：[1]北京市勘察设计研究院有限公司,北京100038

出　　处：《建筑节能（中英文）》2023年第9期73-79,119,共8页Building Energy Efficiency

摘　　要：对于全年累计取热量大于排热量的地埋管地源热泵系统,通常需要与辅助热源耦合,保证土壤的冷热平衡。以北京市某地源热泵项目为例,结合该项目实际情况,提出燃气锅炉、电锅炉蓄热、空气源热泵蓄热3种辅助热源方案,并制定相应的运行策略。结果表明,燃气锅炉辅助热源方案能耗适中,初投资和运行费用较低,可行性最佳;由于现阶段电价政策下高峰电与低谷电价格差减小,蓄热方案降低运行费用的优势不复存在,整体经济性较差。根据峰谷电价分析,低谷电价对蓄能系统的可行性影响较大。当低谷电价降低至0.2元/kW·h,空气源热泵蓄热方案的运行费用相比燃气锅炉方案降低16.6%,从系统长期运行角度来看经济性尚可。For the buried pipe ground-source heat pump system of which the all-year cumulative heat extraction is greater than heat rejection,it usually needs to be coupled with auxiliary heating sources to guarantee the soil heat balance.Taking a ground-source heat pump project based in Bejing as an example,with the actual situation of the project considered,three auxiliary heating source schemes,gasfired boiler,electric boiler heat storage,and air-source heat pump heat storage are proposed,and the corresponding operating strategies are brought up.The results indicate that the gas-fired boiler auxiliary heat source scheme features moderate energy consumption,low initial investment and operating costs,and the best feasibility;due to the reduced price difference between peak electricity and valley electricity under the current electricity price policy,the advantages of heat storage scheme to reduce operating costs no longer exists,thus the overall economy is relatively poor.According to the peak-valley electricity price analysis,the valley electricity price has a great impact on the feasibility of the energy storage system.When the valley electricity price is reduced to O.2 CNY/kW·h,the operating cost of the air-source heat pump heat storage scheme is reduced by 16.6%compared with the gas-fired boiler scheme,and the economy is acceptable from the perspective of long-term operation of the system.

关 键 词：地源热泵 辅助热源 复合能源系统 经济性分析 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]