斜坡倾角对山体导流塔太阳能热气流电站系统性能的影响

Effect of Slope Angle on Performance of Solar Chimney Power Plant System with a Sloped Collector

提出了一种在中高纬地区利用阳面山体坡地建造的山体导流塔太阳能热气流电站,该太阳能热气流电站的集热棚搭建在一定坡度的山体上,兼做导流塔,在山体顶部建造一定高度的垂直导流塔,并利用理论推导的方法研究了影响电站系统效率的主要因素。结果表明:斜坡倾角对山体导流塔太阳能热气流电站系统效率有较大的影响,在中高纬地区当斜坡倾角比纬度小7°～10°时,集热棚单位面积斜面上截获的年辐射量比水平集热棚高25%。另外由于山体导流塔太阳能热气流电站的集热棚同时可兼作部分导流作用,因此该系统可适当减小垂直导流塔的高度,减少工程施工难度。

There is a solar chimney power plant system supported by southern sloped mountain for high latitudes.The sloped collector is built at suitable mountain hills,which also functions as a chimney.Then a short vertical chimney is added to install the vertical axis air turbine.The main factors refer to efficiency of the system were discussed.The result indicates that the solar radiation energy which the sloped collector collected yearly can achieve more than 25%as much as the same plants in southern locations with horizontal collector on unit area,for high latitudes,when slope angle is 7°— 10°smaller than latitude.Furthermore,the system can appropriately reduce the height of vertical chimney and construction problems.