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塔式太阳能热发电吸热器运行安全性研究

, PP. 92-97

Keywords: 塔式太阳能热发电,吸热器,模型,仿真

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Abstract:

八达岭1MW塔式太阳能腔式吸热器已于2011年8月成功生产出过热蒸汽。由于太阳辐照随时间变化的特点,腔式吸热器各受热面能流密度分布极不均匀。为了研究腔式吸热器的运行安全性,文中根据八达岭1MW塔式太阳能过热型腔式吸热器蒸发受热面的结构形式,建立了7通道蒸发受热面动态仿真数学模型。该模型能够反映不同蒸发受热面工质流量随能流密度变化的规律性,更好地模拟吸热器动态特性。在此基础上,通过仿真实验分析了过热型腔式吸热器运器运行安全性。对于蒸发受热面,最危险的工况是在高负荷时太阳辐照突然增强;对于过热受热面,最危险的工况是,高负荷时汽轮机调节汽门突然关小。

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