查询词典 transfer coefficient

Because the limitation of the conventional method,A lot of work were done for the calculation of average overall heat transfer coefficient of building external wall and heat transfer coefficient of building block filling wall needs mass calculation.

由于常规算法的局限性，在实际项目中换算外墙平均传热系数与外墙主墙体传热系数需要计算的工作量较大。

Result and conclusion: The electrochemical experimental results show that the two totally irreversible oxidation peaks in the region of 0.3-1.2 V vs SCE for both MT and SR were observed,and the electrode reactions processes were diffusion-controlled.Their electron transfer number n and electron transfer coefficient α were obtained by CV and electrolysis with coulometry.The diffusion coefficient D and rate constant k f were also calculated by CC and CA.

结果与结论：在0.30~1.2 V电位窗口内，MT和SR均产生1个不可逆氧化峰，并且它们的电极反应均受扩散步骤控制；用控制电位电解库仑法和循环伏安法得到MT和SR的电极反应电子转移数n和电荷转移系数α，运用计时库仑法和计时电流法测定了它们的扩散系数 D 及电极反应速率常数kf。

The effect of micro-orifice spargers on power consumption,gas hold-up ε,oxygen mass transfer coefficient KLα and specific oxygen mass transfer coefficient of power input per volume Eo2 was specially investigated.

着重考察了微孔型分布器对同一组合桨的功耗、气含率ε、氧传质系数KLα以及比功耗传氧系数Eo2的影响，并与传统的环状气体分布器的结果进行了对比。

And the pressure drop of liquid-layer is mainly influenced by weir height. With the increasing of weir height, the pressure drop increases. And it is independent of bare tower velocity and plate dimension. The correlation before was corrected as follows:ΔpL＝3911Z This paper analyzed the heat transfer coefficient between the outer wall of heat tubes and cooling water. And it was considered that plate geometries、weir height、bare tower velocity and heat flux density would affect the heat transfer coefficient.

而液层阻力主要受堰高的影响，堰高越高，液层阻力越大，与空塔速度和孔板的几何尺寸无关，对以往的公式进行修正后得到实验关联式如下：ΔpL＝3911Z 本文对加热管外壁与冷却水之间的换热系数进行了分析，认为孔板的几何尺寸、堰高、空塔速度以及热流密度均会影响换热系数。

In order to verify the accuracy of heat transfer coefficient,2D nonlinear finite element axisymmetric model is established by the means of finite element software MSC.Marc, which is utilized to simulate the transient temperature field coupled with phase transformation process and nonlinear synthetic surface heat transfer coefficient of several typical steels in the different quenchants.

Marc作为模拟平台，建立了淬火过程二维非线性有限元模型，模拟淬火过程中的瞬态温度场，在模拟过程中以多种常用钢在不同淬火介质中的非线性表面综合换热系数为边界条件，同时耦合了相变过程的影响。

During high pressure nitrogen quenching, besides the phase transformation process, the synthetic surface heat transfer coefficient is smooth. With increasing of nitrogen pressure, the synthetic surface heat transfer coefficient is improved.

计算结果表明，除相变阶段外，高压氮气淬火时的表面综合换热系数比较平稳，随着氮气压力的提高，表面综合换热系数呈总体增大趋势。2。

On base of the theory of polymeric melt filling flow in micro injection molding , the mechanism of convectional heat transfer for polymeric melt was discussed,and the effects of convectional heat transfer on the melt filling flow in micro injection molding were investigated with considering the model of convectional heat transfer coefficient.

在熔体流动理论的基础上，通过分析熔体的对流传热机理，并引入对流换热系数模型，对微注塑成型中对流换热系数对熔体充模流动进行了研究。

Furthermore the performances of heat transfers including corrugate plate, tube and fin-tube were compared under the same conditions. The results show that when the air frontal velocity is between 2.45 and 4.1m/s, the overall heat-transfer coefficient of plate heat exchanger ranges from 100 to 160 W/m^2/ equal to one sixth of that of fin- tube cooler based on tube outside area, which is about 70% higher than that of tube cooler. The volumetric heat transfer capacity of plate cooler is 1.5 times as that of fin-tube cooler and 15 times as that of tube cooler. The heat transfer capacity of per unit power of plate cooler is 5.5 times as that of tube cooler and similar results for fin-tube cooler.

在相同工况下，比较了波纹板式、光管式和翅片管式空冷器的性能指标，结果表明：迎面风速在2.45~4.1m/s之间，波纹板式空冷器传热系数达到100~160W/平方公尺/℃；约比光管式提高70%，但只有以管束外表面为基准的翅片管式传热系数的六分之一；板式空冷器单位体积换热量约是翅片管式空冷器的1.5倍，是光管式的15倍；板式空冷器单位功耗换热量约是光管式空冷器的5.5倍，而翅片管式空冷器与光管式空冷器则相差不大。

And, theoretical and experimental studies have been carried out of the performance of the heat transfer enhancement by adding a proper amount of nanoparticles to the thermosiphon with water as the working fluid. Compared with the ordinary thermosiphon, results indicate that this heat pipes posses such advantages as good startup, lower tube wall temperature, and its heat transfer coefficient is increased by 47～96%, heat flux is increased by 7.6～15% in the range of the experiment. The performance of the heat transfer relates to the diameter and the volume fraction of nanoparticle.

理论和实验的研究了这种热虹吸管蒸发段的工作特性，结果表明，与普通热管相比较，这种新式热管具有很好的启动特性，低的管壁温度，换热系数提高了47～96％，轴相热流率提高了7.6～15％，其换热性能随纳米颗粒粒径的减小而增大，随纳米颗粒加入量有所增加，当超过一定量时换热性能反而降低了。

Based on the principal of heat transfer, this paper presented new concepts of characteristic factors of the heat transfer of drying room structure, and performed the unsteady measurement of the heat transfer coefficient and the equivalent parameter of retaining heat.

依据传热的基本原理，提出分析干燥系统室体结构传热特性的特征参数新概念，实现了干燥室隔热体传热系数的非稳态测量，并可同时确定蓄热当量系数。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。