Some useful formulas for convection calculation of vertical and horizontal duct are given. So temperature decrease at the surface of discs and temperature rise of oil flow can be obtained.
得到了较为适合的垂直油道、水平油道自然对流换热特性数经验关联式，并据此得到了自然油循环变压器垂直油道和水平油道线饼表面温降和油流温升的计算方法。
Some useful formulas for convection calculation of vertical and horizontal duct are given. So temperature decrease at the surface of discs and temperature rise of oil flow can be obtained.
得到了较为适合的垂直油道、水平油道自然对流换热特性数经验关联式，并据此得到了自然油循环变压器垂直油道和水平油道线饼表面温降和油流温升的计算方法。
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