In order to investigate the alternate operation characteristics of a solar-ground source heat pump system（SGSHPS）,various alternate operation modes are put forward and defined.A two-dimensional mathematical model wi...In order to investigate the alternate operation characteristics of a solar-ground source heat pump system（SGSHPS）,various alternate operation modes are put forward and defined.A two-dimensional mathematical model with freezing/melting phase changes is developed for the heat transfer analysis of the soil.Based on the numerical solution of the model,the variation trends of underground soil temperature of the SGSHPS operated in various alternate operation modes are discussed.The results indicate that,for the day-night and short-time interval alternate operation modes without solar energy,the operation time fraction of a solar heat source should be confined to from 50% to 58% when operated in an alternate period of 24 h.Meanwhile,the disadvantages of a natural resumption of soil temperature can be overcome effectively by solar energy filling,and an optimal operation effect can be achieved by integrating the mode of solar energy filling with other alternate modes.In addition,the accuracy of the presented model is verified by the experimental data of borehole wall temperatures.The conclusions can provide a reference for the optimization operation of the SGSHPS.展开更多
通过分析太阳能-地源热泵复合系统在新农村中的应用,介绍了太阳能-地源热泵复合系统的特点与形式,并且结合实际新农村社区建设案例,对系统的主要设备进行设计计算,并进行了经济环保性分析,分析表明,新农村建设中应用太阳能-地源热泵复...通过分析太阳能-地源热泵复合系统在新农村中的应用,介绍了太阳能-地源热泵复合系统的特点与形式,并且结合实际新农村社区建设案例,对系统的主要设备进行设计计算,并进行了经济环保性分析,分析表明,新农村建设中应用太阳能-地源热泵复合系统的回收年限为13年,每年节约用电量12.9 k Wh/m2,减排168.53吨CO2。展开更多
基金The National Key Technology R&D Program of Chinaduring the 11th Five-Year Plan Period(No.2008BAJ12B04)China Postdoctoral Science Foundation(No.20090461050)+1 种基金the Project of Researchand Development of Ministry of Housing and Urban-Rural Development ofChina(No.2008-K1-26)the New Century Talent Project of Yangzhou University for Excellent Young Backbone Teacher(2008)
文摘In order to investigate the alternate operation characteristics of a solar-ground source heat pump system（SGSHPS）,various alternate operation modes are put forward and defined.A two-dimensional mathematical model with freezing/melting phase changes is developed for the heat transfer analysis of the soil.Based on the numerical solution of the model,the variation trends of underground soil temperature of the SGSHPS operated in various alternate operation modes are discussed.The results indicate that,for the day-night and short-time interval alternate operation modes without solar energy,the operation time fraction of a solar heat source should be confined to from 50% to 58% when operated in an alternate period of 24 h.Meanwhile,the disadvantages of a natural resumption of soil temperature can be overcome effectively by solar energy filling,and an optimal operation effect can be achieved by integrating the mode of solar energy filling with other alternate modes.In addition,the accuracy of the presented model is verified by the experimental data of borehole wall temperatures.The conclusions can provide a reference for the optimization operation of the SGSHPS.
文摘通过分析太阳能-地源热泵复合系统在新农村中的应用,介绍了太阳能-地源热泵复合系统的特点与形式,并且结合实际新农村社区建设案例,对系统的主要设备进行设计计算,并进行了经济环保性分析,分析表明,新农村建设中应用太阳能-地源热泵复合系统的回收年限为13年,每年节约用电量12.9 k Wh/m2,减排168.53吨CO2。
