中文摘要：

土壤源热泵系统可用于夏热冬冷地区的供暖、供冷、供生活热水等.由于夏热冬冷地区的地域跨度大且不同类型建筑的负荷特性差别较大,土壤源热泵系统在实际使用过程中出现了取热量大或排热量大的2种不同的全年热不平衡问题和尖峰取、排热量过大的短期热不平衡问题.本文选取夏热冬冷地区典型城市的4种典型公共建筑,模拟分析其负荷特性,针对建筑负荷特性差异所导致的土壤源热泵系统的土壤热不平衡问题,提出了4种解决方案：1）对于全年排热量较大的公共建筑,可采用“土壤源热泵耦合太阳能制冷”的方案,相对于普通土壤源热泵系统节能率约为11％ - 23％;2）对于全年取、排热量基本相差不大的公共建筑,可采用“土壤源热泵冷凝热回收耦合太阳能生活热水”的方案,节能率可进一步提高15％ -20％;3）对于全年取热量较大的建筑,可采用“土壤源热泵耦合太阳能补热”的方案;4）对于尖峰取、排热量较大的建筑,可采用“土壤源热泵耦合太阳能间歇供热”的方案.

英文摘要：

Ground-coupled heat pump （GCHP） is used for heating,cooling and domestic hot water （DHW） in the hot summer and cold winter region.As the building load is different for different building and different climate in this region,GCHP will run into the problems of soil thermal imbalance in the year or short time due to the large heat extraction or rejection.In this paper,four typical buildings in typical cities of this region are selected and their building loads are simulated in DeST.To eliminate different soil thermal imbalance,four solutions combining GCHP with assisted solar collector are proposed.For the public building with large annual heat rejection,the solution named ＂GCHP-solar for cooling＂ can be adopted which can save 11％ -23％ energy compared the traditional GCHP.For the public building with similar annual heat extraction and rejection,the solution named ＂GCHP-solar with heat recovery for DHW＂ can be adopted which can save 15％ -20％ energy.For the public building with large annual heat extraction,the solution named ＂ GCHP-solar for heat compensation＂ can be adopted.For the public building with large transient heat transfer rate with soil,the solution named ＂GCHP-solar for intermittent heating＂ can be used.