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目前国内外推广应用的太阳能平板集热器,绝大多数只能提供60—70℃的热水,随着温度的升高,其效率显著地下降,使用范围受到很大限制。为了扩大使用范围,国内外都在研究提高集热器效率和工作温度的问题。中国科学院电工研究所太阳能组研制的新型太阳能中温集热器,在不跟踪的条件下,用简单廉价的平面反光镜进行低倍率聚光,可减少昂贵的真空集热管数量,降低造价,提高效率和工作温度(效率45—50%,温度80—120℃)。该集热器的研制成功,可扩大太阳能热利用的应用领域,促进新型太阳能中温集热器的发展。
Currently at home and abroad to promote the use of solar panels collectors, the vast majority can only provide 60-70 ℃ hot water, with the temperature increases, the efficiency dropped significantly, the use of a very limited range. In order to expand the scope of use, both at home and abroad are studying the issue of increasing collector efficiency and operating temperature. The new solar thermal collector developed by the solar power group under the Institute of Electrical Engineering, Chinese Academy of Sciences, can reduce the amount of expensive vacuum heat-collecting tubes, reduce the cost and increase the efficiency without using a simple and inexpensive plane mirror And working temperature (efficiency 45-50%, temperature 80-120 ℃). The successful development of the collector can expand the field of solar thermal applications, and promote the development of new solar thermal collector.