热管式真空管和平板型集热器在兰州地区太阳能热水系统中的热性能对比分析

Comparison and Analysis of Thermal Property for Heat Pipe Vacuum Tube and Plate Type Collector in Solar Water Heating System in Lanzhou

利用TRNSYS软件对兰州市某住宅小区别墅用户建立热管式真空管太阳能集热器及平板型太阳能集热器热水系统模型,并结合兰州地区气象参数,选择在兰州最冷月的太阳辐射强度最小日及太阳辐射强度最大日对系统进行了仿真模拟,得到了热管式真空管太阳能集热器热水系统和平板型太阳能集热器热水系统的太阳能辐射强度、有效的热量、太阳能保证率及系统效率的分布。分析发现在同样的气象条件下,热管式真空管集热器太阳能热水系统的太阳能保证率及系统效率都要比平板型集热器太阳能热水系统高,说明热管式真空管集热器的性能更优。

In this article,hot-water system model for heat pipe vacuum tube solar collector and flat panel solar collector was built by TRNSYS in a residential district of Lanzhou,and it is simulated in the days that solar radiation intensity is minumum and maximum in coldest winter month in consideration of meteorological parameter in Lanzhou.As a result,distribution curve of solar radiation intensity,valid heat gain,solar fraction and system efficiency were got for hot pipe type vacuum tube solar collector hot water system and flat plate solar collector hot water system.Under same meteorological condition,solar fraction and system efficiency of hot pipe type vacuum tube solar collector hot water system were higher than that of flat plate solar collector hot water system after analysis,as showing the former has more superior property.