工业技术创新Issue(5)：547-552,6.DOI:10.14103/j.issn.2095-8412.2014.05.007
真空管太阳能集热器管间遮阴问题研究
Inter-Tube Overshadow on the Vacuum-Tube Solar Thermo-Collector
摘要
Abstract
There exists the inter-tube overshadow problem on the Vacuum tube solar thermo-collector around the sunrise and sunset. It may have influence on the effective collecting area and collected heat. In this paper, a mathematic model of inter-tube overshadow on a slope collecting surface,together with a solar radiation model, was established and used to calculate the shadow area proportion changing in a day with the time, the shadow period proportion in a year changing with the date, the influences of slope angle and the orientation angle on the shadow period, the shadowed solar radiation in a day changing with the time, and the proportion of the shadowed solar radiation in a year changing with the date. The result showed, due to the inter-tube overshadow, the collected thermo-energy can be reduced by 3.5% at most, or annual averaged by about 2%. In the common engineering calculations, the problem could be neglected.关键词
太阳能/真空管集热器/管间遮阴/数学建模Key words
Solar energy/Vacuum tube thermo-collector/Inter-tube overshadow/mathematics modeling分类
能源科技引用本文复制引用
高秀峰,王宋宝,李云..真空管太阳能集热器管间遮阴问题研究[J].工业技术创新,2014,(5):547-552,6.基金项目
江苏省自然科学基金重点项目“太阳能热泵集中供热技术在建筑节能中的应用研究” （）
