真空热管式集热器储水温度对集热效率影响研究

Effect of Water Storage Temperature of Vacuum Heat Pipe Collector on Heat Efficiency

在太阳能生活热水供应和供暖系统中,高频使用的是真空热管式集热器。水箱与集热器的精确匹配成为影响热管冷却段的进水温度的关键因素,进而影响真空热管式集热器集热效率。基于平板真空热管式集热管物理结构,建立平板热管式真空集热管能量平衡模型,并在此基础上归纳整理出平板热管式真空集热管瞬时效率方程。分析热效率方程提出集热器集热效率的优化措施,控制水箱中加热流体的温度,及时将水箱中的热量换热储存出去,有利于保持集热管处在持续高效的工作环境中。

In the solar energy hot water supply and heating system,the vacuum heat pipe collector is utilized with high-frequency. The accurate matching of water tank and collector is the crucial factor affecting the inlet temperature of the cooling section of the heat pipe,and then affects the heat efficiency of the collector of the vacuum heat pipe. Based on the physical structure of the flat vacuum heat pipe collector tube,the energy balance model of the plate heat pipe vacuum collector tube is established,and the instantaneous efficiency equation of the flat heat pipe vacuum collector tube is summed up on this basis.The heat efficiency equation is proposed to optimize the thermal efficiency of collector,to control the temperature of the heating fluid in the water tank,and to store thermal energy in the water tank in time,which is helpful to keep the heat collector in a continuous and efficient working environment.