换热管内插入间隔自旋扭带流阻与传热特性的实验研究
Science & Technology in Chemical Industry(2010)
Abstract
通过实验研究了内置间隔自旋扭带的换热管的传热和流阻特性。实验结果表明,间隔扭带的换热系数和摩擦系数都低于全长扭带;扭转比越大,间距对换热管阻力和传热特性的影响越小。此外,作者还建立了包含间隔扭带结构参数在内的流阻与传热特性的经验关联式。
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Key words
Nu Number,Friction factor,Empirical correlation,Regularly spaced twisted-tape
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