摘要
优化地源热泵的运行管理策略,降低土壤热不平衡对地源热泵机组性能的影响,是保证地源热泵机组长期稳定高效运行的重要措施。以天津市某办公楼的地源热泵系统为研究对象,对其多年运行之后的土壤温度变化和系统能效变化进行了模拟分析,分析比较了不同间歇运行方案下得到的土壤温度和热泵机组能效的变化。结果表明,地源热泵机组连续运行30年时,土壤温度受热不平衡的影响,呈逐年波动式上升,前15年上升幅度较大,后15年增幅较缓。地源热泵系统间歇运行将有利于地温的恢复,机组的启停比对地源热泵系统土壤温升的累计影响显著大于运行起止时间对土壤温升的影响。研究结果可为地源热泵系统的运营管理提供重要参考与借鉴。
Timizing the operation and management of GSHP （ground source heat pump） system to reduce ground thermal imbalance is one important measure to ensure the stable and efficient operation of GSHP system for a long period.Taking the GSHP system used in an office building of Tianjin Eco-city as example,this paper investigates the characteristics of ground temperature and system performance when the GSHP system was operated intermittently.The results reveal that the ground temperature increases gradually during the continuous operation of GSHP system for 30 years,in which the ground temperature increases quickly in the first 15 years and slowly in the latter.The intermittent operation of GSHP system would be favorable for the recovery of ground temperature,and the on-offratio of GSHP system preserves more significant influences than operation period.
出处
《制冷与空调（四川）》
2014年第4期410-414,421,共6页
Refrigeration and Air Conditioning
基金
中国建筑科学研究院青年科研基金项目(20122001331030112)
