兰州太阳能集热器最佳倾角的计算与分析  

Calculation and Analysis of the Optimum Angle of Solar Collectors in Lanzhou

作　　者：赵静[1] 王克振[1] 韩喜莲[2] ZHAO Jing;WANG Ke-zhen;HAN Xi-lian(College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China;College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China)

机构地区：[1]兰州理工大学能源与动力工程学院,兰州730050 [2]兰州理工大学土木工程学院,兰州730050

出　　处：《建筑节能》2019年第1期28-31,共4页BUILDING ENERGY EFFICIENCY

基　　金：甘肃省自然科学基金(1610RJZA028);甘肃省自然科学基金(1508RJZA109)

摘　　要：以兰州地区水平面上的月平均太阳辐射数据为基础,计算不同倾角斜面上的月太阳辐射量,并以集热器倾斜面上接收到的太阳辐射量最多为目标,对不同时段内太阳能集热器的最佳倾角进行了优化。通过计算得到了集热器的月最佳倾角、季最佳倾角和年最佳倾角。集热器的安装倾角不但影响其斜面上全年接收到的总太阳辐射量,还影响月太阳辐射量的分布。采用季最佳倾角安装集热器最为合理,一年改变两次倾角,4—9月时倾角为5°,10—3月时倾角为49°,其斜面获得的年太阳辐射量比采用当地纬度36°时提高了4. 8%。Based on the data of monthly average solar radiation on the horizontal surface of Lanzhou,the monthly solar radiationon different inclined slopes is calculated,and the solar radiation of the collector received on the inclined surface is the most targeted.The optimum tilt angle of the device is optimized.The monthly optimum inclination angle,the seasonal optimum inclination angle and the annual optimum inclination angle of the collector are obtained by calculation.The installation angle of the collector not only affects the total amount of solar radiation received on the slope of the year,but also affects the distribution of the monthly solar radiation.It is most reasonable to install the collector with the best inclination of the season.The inclination angle is changed twice a year.The inclination angle is 5°from April to September,and the inclination angle is 49°from October to March.The annual solar radiation obtained by the slope is better than that of the local.The latitude increased by 4.8%at 36°.

关 键 词：最佳倾角 太阳能集热器 辐射量 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程] TK511[动力工程及工程热物理—热能工程]