【摘要】 为了对武汉地区太阳能集热器的有效应用提供可靠参考，用本文利用Fluent软件，在武汉地区冬季气象条件下分别对集热管管长为1 800～2 100 mm、管径为41～53 mm、安装倾角为33°～51°的全玻璃真空管太阳能集热器集热过程进行模拟，并进行实验验证。结果显示，实验值与模拟值拟合度为90%以上；安装倾角由33°增加至51°时，水箱流体温度升高1.59℃,集热效率升高了1.21%;当集热管管长由1 800 mm增加至2 100 mm时，水箱流体温度升高1.08℃,集热效率降低了1.28%;集热管管径由41 mm增加至53 mm时，水箱流体温度升高1.53℃,集热效率降低了2.05%。结果表明，武汉地区集热器倾角不应小于51°,集热器单位吸热面积容水量越大，流体温度越小、集热效率越高。更多还原

【Abstract】 In order to provide a reliable reference for the effective application of solar collectors in Wuhan, Fluent software is used in this paper to measure the length of the collector tubes with a length of 1 800～2 100 mm, a diameter of 41～53 mm, and an installation inclination under the winter weather conditions in Wuhan. The heat collection process of 33～51° all-glass evacuated tube solar collector is simulated and verified by experiments. The results show that the fitting degree between the experimental value and the simulated value is more than 90%; when the installation inclination is increased from 33° to 51°, the fluid temperature of the water tank increases by 1.59 ℃, and the heat collection efficiency increases by 1.21%; When the mm increases to 2 100 mm, the temperature of the fluid in the water tank increases by 1.08 ℃, and the heat collection efficiency decreases by 1.28%; when the diameter of the collector tube increases from 41 mm to 53 mm, the temperature of the fluid in the water tank increases by 1.53 ℃, and the heat collection efficiency decreases by 2.05%. The results show that the inclination angle of the collector in Wuhan should not be less than 51°. The larger the water capacity per unit heat-absorbing area of the collector, the lower the fluid temperature and the higher the heat collection efficiency.更多还原