查询词典 transfer coefficient

Another feature of HEDDTB is that its tubes' buddle is composed of tubes with different diameters, which lead to a smaller fluctuation of heat transfer coefficient in the condition of fluctuating flux than that of the heat exchanger with tubes that has the same diameter in the case of low Reynolds number.

异径管束换热器的换热管束由直径不同的管子组成，这种换热管束在低雷诺数下传热系数随流量的波动相对同径管束而言较小，因此异径管束有一定的抗传热系数波动的性能，这使得换热器在流量波动的工况下工作性能稳定。

The tubes' buddle of the traditional heat exchangers is composed of tubes with same diameter, which influences its efficiency at small Reynolds number because of the big fluctuation of the heat transfer coefficient led by the flux fluctuation.

传统的换热器都是采用同径管组成换热管束，因而，在流量波动的工况下，管程传热系数波动较大，对换热器的正常运行有影响。

It shows to design the condensator of the absorbing solar air condition,and analyse the influence of the heat transfer coefficient by the space between the wing,thickness of the wing,diameter of the tube and the grouping number,in order to achieve the optimizational design,It make the design process celerity and briefness,and make it that the influence other parameter brings more evidence.

对吸收式太阳能空调中的冷凝器进行了设计计算，并对其结构如翅片间距、翅片厚度、管直径、分组数等因素对传热系数、管内压降的影响进行了分析，以达到最优化的设计，本文运用Excel强大的图表和函数计算功能，使计算过程快速、简捷，并可以看到每个参数的变化对其他参数的影响，提出了使用于Excel计算冷凝器设计计算方法，避免了复杂的编程过程，为新型环保制冷机的设计优化提供一定的参考。

In this dissertation, an inverse heat conduction method has been proposed to determine the heat transfer coefficient.

本文针对这一现实的困难，提出了用反传热法来测算换热系数。

Enhancements of convective heat transfer coefficient are different in the different positions of experimental pipeline.

在实验管道内的不同位置纳米流体对流换热系数的提高也是不同的。

The surface temperature distribution,the spraying cooling curve,and the heat transfer coefficient of spray cooling were obtained.

得到了加热表面温度分布、喷雾冷却曲线和喷雾冷却的换热系数等传热特性。

A theoretical equation for determining the mass transfer coefficient for removal of ammonia in water by vacuum membrane distillation has been derived. In addition, the influence of feed temperature, feed concentration and the pH value of the feed on K was investigated.

对真空膜蒸馏脱除水中氨过程总传质系数的计算式进行了理论推导，并以真空膜蒸馏实验考察了料液温度、料液浓度及pH值对总传质系数影响。

The diffusive mass transfer coefficient conformed to Arrenhenius correlation with feed temperature and was independent of the flow status.

膜内的扩散传质系数与膜面的流动状况无关，与温度的关系服从Arrhenius函数关系。

The results indicate that the characters of twisted tubes are better than round tubes, and the heat transfer coefficient and power characters are increased with the diminishment of geometry sizes and the increase of fluid parameters.

实验结果表明，扭曲管比圆管的性能好，螺距和管径越小、水喷淋密度和风速越大，传热系数越高，但流动阻力同时增大，存在合适的螺距、管径、水喷淋密度和风速使蒸发式冷凝器综合性能最佳。

Upon the numerical results of the gas phase and the dispersed liquid flow, the mass transfer coefficient of the liquid phase is obtained.

在对气液两相流体流动进行了数值模拟的基础上，计算了液滴相的传质系数。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。