北京市昌平区马池口村地源热泵系统设计与热平衡分析

Design and Heat Balance Analysis of Ground Source Heat PumpSystem in Machikou,Changping District,Beijing

通过使用模拟软件对北京市昌平区马池口村项目的供热制冷设计负荷和全年逐时动态负荷进行计算,结合项目的能源条件与建筑的负荷特点,设计了以地埋管地源热泵系统为主,空气源热泵与复合式太阳能热水系统作为辅助热源的复合式能源系统。通过TRNSYS软件模拟,分析了地埋管地源热泵系统承担75%供暖负荷时存在的土壤热平衡问题,验证了使用复合式太阳能热水系统为地埋管系统补热后地下岩土温度可维持在一定范围内,基本保持冷热平衡,确保系统安全稳定、高效运行。通过对系统节能效益分析,检验该复合式能源系统的节能降碳效果,为寒冷地区同类型项目提供参考。

The design heating and cooling load and hourly dynamic load in Machikou,Changping district,Beijing are simulated.Considering the energy condition of the project and building load characteristics,a composite energy system with ground-coupled heat pump system as the main heat source and air source heat pump and solar hot water system as auxiliary heat source is designed.Through the simulation of TRNSYS,the heat balance when ground-coupled heat pump system providing 75%heating load is analyzed.Then it is verified that the underground temperature is maintained within a certain range after using solar hot water system to supplement the heat source of the ground-coupled system to ensure the safe,stable and efficient operation of the system.Through the analysis of the energy saving benefit of the system,the energy saving and carbon reduction benefits of the composite energy system are tested,which provides reference for the same type of projects in cold regions.Through the analysis of the energy saving benefit of the system,the energy saving and carbon reduction effects of the composite energy system is verified,which provides reference for the same type of projects in the cold region.