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【英文篇名】 Heat transfer study of surface air coolers(4): Another empirical formula of total heat transfer coefficient of water-cooled surface air cooler 【作者中文名】 王晋生; 【作者英文名】 By Wang Jinsheng; 【作者单位】 解放军理工大学; 【文献出处】 暖通空调, Hv 总传热系数; 实验公式; 【英文关键词】 surface air cooler; total heat transfer coefficient; empirical formula; 【摘要】 认为目前使用的表冷器总传热系数实验公式中未考虑管壁及助片的导热 ,故利用接触因数和表冷器外表面换热系数的关系 ,提出了一个新的实验公式。对该公式进行了实验验证 ,拟合精度较高。 【英文摘要】 Considers that the currently used empirical formula of the total heat transfer coefficient of water cooled surface air coolers does not reflect the role of the tube wall and fins in heat conduction. Using the relationship between the contact factor and the heat transfer coefficient on the air side, puts forward a new formula. Experiments show that the formula has higher fitting precision.