具有丰富太阳能辐射资源、土地资源优势的中国西北荒漠化地区是建设太阳能热发电站的理想场所，然而这些地区终年多风、多沙尘的气候对太阳能热发电设备的安全可靠运行产生了不利的影响。通过数值模拟，对目前应用广泛的RP-3型槽式太阳能热发电集热器在三维定常流场内表面风压特性和风沙两相流场中沙尘的沉降特性进行了模拟分析，得出迎风角和风速对槽式太阳能热发电集热元件表面压力及其周围沙尘沉降规律的影响关系。结果表明迎风角的变化对集热器迎风面风压系数的最大值变化影响不大，对集热器背风面风压系数的最值变化影响较大；不同角度时集热器表面及周围流场中沙尘体积分数的变化存在较大差异。本研究为槽式太阳能热发电集热元件在适合我国气候特点的风沙环境中高效稳定运行提供了一定的理论依据。
赵明智
,
邹露璐
,
张晓明
,
康晓波
. 风载作用下太阳能发电元件表面压力对沙尘沉降的模拟研究[J]. 机械工程学报, 2018
, 54(8)
: 192
-201
.
DOI: 10.3901/JME.2018.08.192
With abundant solar radiation resource, land resource advantage of desertification in northwest areas of China is the ideal place to build solar thermal power stations, however, these areas at the age of wind, sand and dust weather also to safe and reliable operation of the solar thermal power generation equipment produced adverse effect. By numerical simulation, currently the most widely used RP-3 type collector surface wind pressure in three-dimensional steady flow field characteristics and the settlement of sand dust in two phase flow field characteristics, simulated and analyzed the windward angle and wind speed is obtained for slot pressure and the surrounding dust collector surface subsidence rule of the influence of the relationship. The conclusion of changing wind angles had no effect on the wind pressure coefficient of the value of windward and the changing wind angles had a great effect on the wind pressure coefficient of the value of leeward; when the different angles, surface of the collector and the flow field around the dust volume fraction changes have a big difference. This study is suited to the characteristics of the climate in our country groove collector in the efficient operation of wind environment provides certain theory basis.
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