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高温电伴热的熔盐光热电站防凝保温

信息来源:皖缆集团 浏览次数:1106 发布时间:2017-03-22

    高温电伴热是解决高暴露温度或有高工作温度要求的保温措施,不但能在高温环境中正常运行,还能够对被伴热物质进行高温加热。熔盐光热电站大多是塔式的,熔盐工作温度上限为560摄氏度。当温度达到220摄氏度或以下,就会凝固,这种情况下的保温属高温伴热。
    光对熔盐管道采用绝热保温材料,只能解决热量不散失或减少散失,并不能让熔盐始终保持在工作温度范围内。所以,光热电站的熔盐传输管道,只采取绝热保温措施是不够的。还需要对其进行高热量补偿,才能避免熔盐发生凝固现象。采用高温电伴热既能提高热效率,又能确保了光热电站的安全运行。与电加热相比更加节能环保,节省投入成本。

 

高温电伴热的熔盐管道防凝保温


    光热电站熔盐的传输管道通常比较短,为了提高电伴热的热效率。故防护重点在集热塔和熔盐吸热器、吸热器阀门,吸热器腔体等容易产生较大热量损失的地方(如上图所示)。总之,高温电伴热的工作温度可达到几百度,通过温控装置精准控制温度;再配合绝热保温材料使用,防凝保温,安全防护两不误。

 

推荐信息:光热电站的导热油管道有没有配置电伴热必要?

 

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