长沙地区多功能地源热泵系统的模拟与分析  

Simulation and analysis of multi-functional ground source heat pump in Changsha

作　　者：李大鹏[1] 饶政华[1] 张翔[1] 廖胜明[1] 

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2013年第3期1221-1227,共7页Journal of Central South University:Science and Technology

基　　金：国家高技术研究发展计划("863"计划)项目(2007AA05Z225);中央高校基本科研业务费专项资金资助项目(2010QZZD0105)

摘　　要：以长沙地区宾馆建筑为例,建立制冷、制热和制热水的多功能地源热泵系统模型,对多功能地源热泵系统全年运行的技术经济性能进行研究。分析多功能地源热泵系统地埋管换热器周围土壤热平衡性和系统全年能耗特点,并与传统的空气源热泵加电热水器系统进行能耗及全生命周期经济性比较。研究结果表明,与常规的地源热泵系统相比,应用多功能地源热泵系统可明显改善地下土壤全年释热量与吸热量的平衡性,运行10a后土壤温度比相同地埋管长度的常规地源热泵系统减少3.9℃;夏热冬冷地区的多功能地源热泵系统夏季的总能耗最高,冬季次之,春秋季最低;与空气源热泵加电热水器系统相比,多功能地源热泵系统总能耗可节省46%,生命周期内的费用现值节约率变化范围为7%～40%,投资回收期变化范围为5～12a。A model of multi-functional ground source heat pump（MFGSHP）system integrated with cooling,heating and domestic hot water was developed.Taking a typical hotel in Changsha City as example,the techno-economic performances of MFGSHP system were studied.The heat balance of the soil around the borehole heat exchanger and the characteristic of energy consumption for MFGSHP system were analyzed.The energy consumption and life cycle economic analysis for MFGSHP system were compared to the conventional system（i.e.air source heat pump and electric water heater）.The results show that the heat balance can be obviously improved by applying MFGSHP system,and the increase in soil temperature is reduced by 3.9℃compared to the common GSHP system with the same borehole length. The energy consumption of MFGSHP in hot summer and cold winter zone is the highest in summer,moderate in winter and the least in spring and autumn.Compared with the conventional system,MFGSHP can reduce 46%of annual energy consumption,and the saving of present cost value is in the range of 7%-40%and payback period ranges from 5 to 12 a.

关 键 词：多功能地源热泵 生活热水 能耗 经济性 模拟 

分 类 号：TK529[动力工程及工程热物理—热能工程]