【摘要】 该文对真空管内吸热体分别为平板,圆柱体南向斜置,圆柱体东西横置3种形式在晴天时的日接受太阳辐照量进行了分析研究,推导出了它们与纬度、放置倾角和时间的函数关系,并对北京地区采用的3种安装角度对上述3种形式的集热管的日接收太阳辐照量进行了计算和比较。结果表明,不同纬度地区东西横置圆柱吸热体的日接收太阳辐照量是相同的,有一定倾角的朝南放置圆柱吸热体年平均日接收太阳辐照量高于其东西横置,并且还高于同一倾角的平板吸热体。更多还原

【Abstract】 The daily solar irradiation absorption with flat plate absorber and cylindrical absorber inside the vacuum tube were studied as N~S and E~W horizontal inclination installed in fine days. A comparative study on daily solar irradiation absorption was conducted using these three installations in Beijing.The results showed that the daily solar irradiation absorptions for cylindrical absorbers was not changed at different latitudes;the annual average solar irradiation absorptions for cylindrical absorber with N~S tilted was higher than E~W,and higher than flat plate absorber with N~S tilted.更多还原