摘要
建立用于某办公建筑的冷却塔辅助散热型混合式地源热泵系统模型,以夏热冬冷气候条件下的长沙、上海和武汉地区为例,模拟混合地源热泵系统分别以地埋管出水温度、地埋管出水与环境温差、冷却塔运行时段作为辅助散热启停的控制信号的控制策略,运行20年后地埋管附近土壤平均温度及机组性能。研究各控制策略对不同地区的适用性。结果表明,3种控制策略在夏热冬冷地区的不同地区均表现出对系统能耗和土壤温升相近的影响规律,且均可以通过合理的参数设施实现运行20年后土壤维持热平衡。
A model of hybrid ground source heat pump（GSHP）system with the supplemental heat rejecter of cooling tower for an office building is established.Under various control strategies of taking buried pipes＇ outlet water temperature,temperature difference between buried pipes＇ outlet water and ambient temperature,and cooling tower operating period as the start-stop control signal of supplemental heat rejecter,the hybrid GSHP system is simulated to obtain the soil temperature around the buried pipes and the unit＇s performance in Changsha,Shanghai and Wuhan of hot-summer and cold-winter zones during twenty years operation.The applicability of all control strategies in different zones is studied.The results show that these three control strategies show similar law of effect on system＇s energy consumption and soil temperature rise for different hot-summer and coldwinter zones.All the control strategies can maintain underground heat balance after twenty years operation through setting the parameters reasonably.
出处
《制冷与空调》
2014年第12期127-131,共5页
Refrigeration and Air-Conditioning
基金
中央高校基本科研业务费专项资金资助项目(2010QZZD0105)
