严寒地区太阳能-地源热泵与热网互补供暖的部件匹配性
Component matching research of complementary heating system with solar assisted ground-source heat pump and heat supply network in severe cold zone
摘要：
以沈阳某小区的一栋单体建筑为研究对象，利用TRNSYS软件建立了太阳能-地源热泵与热网互补供暖仿真模型，研究了太阳能-地源热泵与热网之间的互补性和太阳能集热器、蓄热水箱及地埋管之间的匹配性。结果表明，在供暖中期，热网投入运行后，经过热网换热后的供水温度明显提高，热泵冷凝器出水平均温度为49 ℃，换热后的平均温度为53 ℃，可以满足末端要求。在相同供热量下，太阳能集热器面积每增加1 m2，地埋管长度可相应减少约5.6 m；热网系统循环水量每增加1 m3/h，地埋管长度可减少约50 m；太阳能短期蓄热系统中，蓄热水箱容积与太阳能集热器面积的匹配关系为60~80 L/m2时，水箱的蓄热效率最高。
Abstract：
Based on an individual building in a residential quarter in Shenyang as the research object, establishes a system simulation model with TRNSYS software. Studies the complementarity of solar assisted ground-source heat pump and heat supply network, as well as the compatibility of solar energy collector, heat storage water tank and buried pipe. The results show that in the middle of the heating period, after the heat supply network is put into operation, the heat water supply temperature increases significantly. The average temperature of outlet water from heat pump condenser is 49 ℃, and it is 53 ℃ after heat exchange, which can meet the requirements of the terminal. Under the condition of the same heat load, when the solar collector area increases by 1 m2, the buried pipe length can reduce about 5.6 m correspondingly. When the flow rate of circulating water in the heat supply network system increases by 1 m3/h, the buried pipe length can approximately decreases 50 m. When the matching relationship between the volume of the storage tank and the solar collector area is 60~80 L/m2, the thermal storage efficiency of the water tank is highest in the short-term solar energy storage system.
Keywords:solarenergy,ground-sourceheatpump,heatsupplynetwork,designselection,simulationmodel,componentmetching,severecoldzone