基于热平衡的复合式地埋管地源热泵系统运行策略
Operation strategies of hybrid ground-source heat pump system based on heat balance
摘要：
建立了冷却塔辅助地埋管地源热泵系统的仿真模型，分析了复合式系统不同设计方案的运行策略。结果表明：对于既有地埋管地源热泵系统，若已按夏季最大释热量设计地埋管长度，则可按热平衡需求选择冷却塔；对于新建复合式系统，可按冬季热负荷设计地埋管，按冷热负荷之差来选择冷却塔，当热泵机组进口水温超过26 ℃时开启辅助冷却塔；此外，采用热泵机组承担全部冬季热负荷和部分夏季冷负荷，而冷水机组+冷却塔作为夏季补充的方案也可以取得较优的运行效果。
Abstract：
Develops the simulation model of ground-source heat pump system assisted with cooling tower, analyses the operation strategies of different design schemes. Recommends to select the cooling tower according to heat balance for existed hybrid ground-source heat pump (HGSHP) system with ground heat exchanger designed by maximum heat release of summer, to select the cooling tower according to the difference of cooling and heating load for a new HGSHP system with ground heat exchanger designed by heating load of winter, operating the auxiliary cooling tower under entering water temperature of heat pump unit above 26 ℃, and that the favorable operation effect can be obtained when heat pump units afford the total heating load of winter and partial cooling load of summer assisted with water chiller and cooling tower in summer.
Keywords:hybridground-sourceheatpumpsystem,auxiliarytowercooling,heatbalance,operationstrategy,model,energysaving