太阳能土壤源热泵变工况供热性能模拟研究  

Simulation of Heating Performance on Solar- ground Source Heat Pump under Variable Conditions

作　　者：陈鑫[1,2] 刘逸[1] 于春光[1] 庞云凤[1] 

机构地区：[1]哈尔滨商业大学能源与建筑工程学院,黑龙江哈尔滨150028 [2]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《节能技术》2016年第1期33-36,共4页Energy Conservation Technology

基　　金：黑龙江省教育厅科学技术研究项目(12531172)

摘　　要：为研究太阳能土壤源热泵在变工况条件下的供热性能,在充分考虑寒冷地区的太阳辐射强度和热负荷变化特点的基础上,建立系统各部分的数学模型,并编程进行模拟研究。埋管的传热模型应用变热流的圆柱源理论模型和线源理论模型,管外径和孔壁之间的热阻通过边界元法进行求解。模拟结果表明,太阳能集热器平均效率为0.52,机组平均COP值可达4.36。该系统在寒冷地区应用时,能够取得很好的节能效果。In order to study the heating performance of solar - ground source heat pump under variable working, mathematical models of system are established with the characteristics of solar radiation intensity and heat load changes in cold regions, and simulation study of system was carried out. The heat transfer model of underground heat exchanger used variable heat flux line source theory and cylindrical source the- ory model, and the thermal resistance between the outer diameter of pipe wall and the borehole wall is solved by the boundary element method. Simulation results show that the solar collector average efficiency is 0.52, and the average COP of heat pump unit is 4.36. The system can get very good energy saving effect when it is used in cold regions.

关 键 词：太阳能 土壤源热泵 变工况 变热流 热阻 边界元法 

分 类 号：TK529[动力工程及工程热物理—热能工程]