地铁车站采用复合地源热泵系统的节能潜力分析

我国大部分地区地铁车站仅在夏季设置空调系统供冷,冬季不供暖。在运用土壤源热泵系统时,会造成土壤热积累,运行效率逐年下降。冷却塔复合式地源热泵能够在冬季将土壤夏季积累的热量排出,保持土壤冷热负荷相等,从而提高地铁车站空调系统夏季运行能效。通过计算地铁车站夏季空调负荷,对采用复合式地源热泵系统的节能潜力进行分析。结果表明,采用该系统能够有效减少地铁车站空调系统能耗,达到节能效果。

Energy-saving Potential Analysis of Hybrid GSHP Applied in Subway Station

Most subway stations in China are provided with cooling in summer and there is no need for heating in winter. The application of ground source heat pump( GSHP) system causes heat accumulation in soil and GSHP efficiency is declined year after year. In winter,the hybrid GSHP with cooling tower can discharge the accumulated heat in soil in summer,keeping equivalence of cooling load and heating load,and improving the efficiency of the air conditioning system in summer. Energy saving potential of hybrid GSHP system in subway is analyzed based on the calculation of subway station cooling load. The results show that hybrid GSHP system can effectively reduce energy consumption of air conditioning in subway station for more energy saving.