摘要
在冷负荷占优型建筑中,单一地源热泵系统长期运行会导致土壤热量堆积及系统性能下降。以山东大学某高铁站为研究对象,模拟计算该建筑物的全年逐时负荷,建立单一地源热泵系统与地源热泵-冷却塔耦合系统的仿真模型,对比两者在机组性能、能耗、经济性和环保性方面的差异。结果表明,地源热泵-冷却塔耦合系统有效降低了土壤冷热不平衡率,解决了土壤温度场失衡的问题,其能耗降低较为明显,且通过减少钻孔及地埋管的数量,降低了系统的初投资。在环保方面,与单一地源热泵系统相比,耦合系统运行10 a后,CO_(2)、SO_(2)、NO_(x)及烟尘的排放明显减少,对提升空气质量和减少温室气体排放具有积极作用。
In buildings with a dominant cooling load,the long-term operation of a single ground source heat pump system can lead to soil heat accumulation and a decline in system performance.Taking a certain high-speed railway station in Jinan City as the research object,the hourly load of the building throughout the year is simulated and calculated.The simulation models of the single ground source heat pump system and the ground source heat pump-cooling tower coupling system are established to compare the differences between the two in terms of unit performance,energy consumption,economy and environmental protection.The results show that the ground source heat pump-cooling tower coupling system effectively reduces the imbalance rate of soil cold and heat,solves the problem of soil temperature field imbalance,and its energy consumption is significantly reduced.Moreover,by reducing the number of boreholes and buried pipes,the initial investment of the system is lowered.In terms of environmental protection,compared with a single ground source heat pump system,the coupled system significantly reduces the emissions of CO_(2),SO_(2),NO_(x) and smoke dust after 10 a of operation,which has a positive effect on improving air quality and reducing greenhouse gas emissions.
作者
李艳
张文科
张珊珊
朱秀丽
LI Yan;ZHANG Wenke;ZHANG Shanshan;ZHU Xiuli
出处
《节能》
2025年第8期51-57,共7页
Energy Conservation
基金
山东省自然科学基金面上项目(项目编号:ZR2022ME079)。
关键词
地源热泵
冷却塔
耦合系统
土壤热堆积
节能
ground source heat pump
cooling tower
coupled system
soil thermal accumulation
energy-saving
