而且此模型也可以用于求解具有不同传热膜系数和不同换热器材质的网络。
Furthermore, the model can also be used to solve heat exchanger network problems with unequal heat transfer film coefficients and different construction materials.
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。
Using mixed tube bundle, high heat transfer coefficient can be acquired as well as pressure drop not too high.
为了得到三种组合桨的传热膜系数的通用关联式，本文采用了传热膜系数与单位质量功之间的关联。
The relationship between the heat-transfer coefficients and the power consumption per unit mass of the fluid is used to ob…
结果表明，提高对流传热系数是提高膜蒸馏热效率和渗透通量的关键。
It appears that improvement of convective heat transfer is very important for enhancement of flux and heat efficiency.
将传质方程引入到垂直管降膜蒸发传热模型中，求解时考虑了径向速度、质量扩散系数和膜厚变化对传热的影响。
The mass transfer equation was introduced into heat transfer model of falling film evaporation. The radial velocity, mass diffusion coefficient and variation of film thickness were taken into account.
研究结果表明，与传统的光滑管弓形隔板换热器相比，板式换热器能非常有效地强化空气侧的膜传热系数。
The results showed that compared to conventional smooth segment baffle heat exchanger, the plate heat exchanger(PHE) can effectively strengthen the film heat transfer coefficient of the shell side.
模拟结果表明，进口流量和热负荷对降膜蒸发传热传质系数的影响较为显著。
The simulation results indicate that the effect of solution feed flow and heat flux has a high influence on heat and mass transfer coefficient of falling film evaporation.
分析了影响伞板式降膜蒸发器传热的主要因素，得到了伞板降膜蒸发侧无因次传热系数的实验关联式；
The influence factors of the heat transfer performance and the formula of the heat transfer coefficient on the evaporation side in the umbrella-plate have been obtained.
同向切应力具有减薄液膜厚度和增大传热系数的作用；
The cocurrent shear plays the roles on thinning film thickness and enhancing heat transfer, and the countercurrent shear has inverse effect.
对这种蒸发器进行了传热性能的研究，并与池式光板进行传热性能对比，实验结果表明，T型翅片板降液膜蒸发能在低温差下维持沸腾且有较高的给热系数。
The heat performance of boiling for this evaporator has been studied and compared with that of falling film boiling and pool boiling on the smooth plate respectively.
对这种蒸发器进行了传热性能的研究，并与池式光板进行传热性能对比，实验结果表明，T型翅片板降液膜蒸发能在低温差下维持沸腾且有较高的给热系数。
The heat performance of boiling for this evaporator has been studied and compared with that of falling film boiling and pool boiling on the smooth plate respectively.
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