空冷器管组内紊流强制对流换热的热阻分离法测定

Turbulent heat transfer measurement in air cooler tube sets using heat resistance separating method

采用Ｗｉｌｓｏｎ法对１４个表面式冷却器元件进行了管内紊流强制对流换热系数的测定。实验结果表明，实测值与用ＢｏｅｌｔｅｒＤｉｔｕｓ公式计算值的偏差均在工程应用许可范围内，证实了在空冷器管组内流体紊流换热系数可按Ｄｏｅｌｔｅｒ－Ｄｉｔｕｓ公式计算。

Measured the turbulent flow and heat transfer coefficients for fourteen different air coolers using Wilson method. The tested heat tranfer coefficients agrees satisfactorily with those predicted by the Boelter Dittus formula. Concludes that the Boelter Dittus correlation is still valid for calculating the turbulent heat transfer coefficients in pipes of the air cooler.