太阳盐的热力学性质及其在光热发电中的应用

Thermophysical Properties of Solar Salt and Its Application in Solar Thermal Power Generation

介绍太阳盐的热力学性质,比较熔盐管内对流传热关联式,并对熔盐在光热发电中出现的降解、腐蚀及氮氧化物(NOx)排放等问题进行研究。结果表明:Gnielinski关联式和Dittus-Boelter关联式并不适合应用于熔盐光热发电中;应根据具体金属材料,限制其在熔盐中的使用温度。

Thermophysical properties of solar salt were introduced,and different correlations of convection heat transfer for molten salt tube were compared.Meanwhile,researches were conducted on following problem existing in solar thermal power generation with molten salt,such as degradation,corrosion and oxynitride(NOx)emission,etc.Results show that Gnielinski correlation and Dittus-Boelter correlation are not suitable for the application of molten salt in solar thermal power generation,and the temperature of metal material in molten salt should be controlled.