Basing on the conception of local drag coefficient in the pipeline field, the pressuredropcoefficient of fluid in each inclined flue under different condition of pressed brick was calculated.
借鉴管路计算中局部阻力系数的概念，进一步计算了斜道区不同压砖情况下的压力损失系数。
2
Using mixed tube bundle, high heat transfer coefficient can be acquired as well as pressuredrop not too high.
采用混合管束既可获得高的总传热系数和管内外传热膜系数，又可以使管内压降不致过大。
3
And then, based on the results of experimental data, the authors propose a set of equations for calculating the pressuredropcoefficient in Angle pipes under different flow conditions.