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热力发电  2014 

nf型搪瓷蓄热元件的传热与流动特性实验

, PP. 44-48

Keywords: 回转式空预器,搪瓷蓄热元件,传热特性,流动特性,拟合公式

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Abstract:

回转式空气预热器(空预器)的传热与流动特性和所用蓄热元件的类型密切相关。搭建了回转式空预器蓄热元件传热与流动特性实验台,并通过周期性的风门切换,使得冷、热风交替冲刷蓄热元件,模拟回转式空预器的非稳态换热过程。通过实验研究nf型搪瓷蓄热元件不同雷诺数下的努塞尔数、压降以及阻力系数的变化规律,得出其传热和流动特性的拟合公式。

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