查询词典 heat flow

For the turbulent developing flow of absorbing and isotropic scattering medium in a circular tube, the steady state heat flux of the coupled heat transfer of turbulent convection and thermal radiation under constant wall heat flux was investigated numerically.

对圆管内物性随温度变化的吸收-各向同性散射介质的湍流入口段，数值研究了定热流加热下辐射与湍流正在发展流耦合换热的稳态热流特征。

As the rate of flow of fresh air from the casing into an enclosure is substantially matched by the rate of flow of stale air from the enclosure, and heat is transferred between the two air flows by the heat exchanger (15), a total replacement of air in the enclosure at a relatively high rate can be sustained in an economically viable manner.

由于从壳体进入封闭体的新鲜空气的流量事实上和来自封闭体的旧空气流量相当，及由热交换器在两股空气流之间的传热，封闭体中全部空气的以相当高的流量更换能以一种经济可行的方式维持。

In this paper, research is focused on the heat and mass transfer features during absorption process on the two-scale corrugation plate surfaces of plate-shell heat exchangers. This new Kind structure has vertical large corrugations and horizontal small ones, which can enhance the convection heat transfer of cooling water at internal plate channel side and make the liquid falling film uniformly distributed and turbulent by twisting path, so that the heat and mass transfer characteristics at both sides can be enhanced while sufficient flow area for adequate resistance requirement is also met.

本论文围绕一种新型交叉双尺度波纹板片组成的板壳式吸收器进行研究，这种新型传热元件的相邻板片的竖直大波纹相顶靠，形成曲折的板内通道和菱形板外通道，可强化板内侧冷却水的对流传热，而其水平小波纹则可对布膜的溴化锂浓溶液和冷剂蒸汽产生连续的扰动，使液膜分布均匀，传热传质得到强化。

The synthetic gas and ash composition heat transfer and flow in vertical pipe of coal gasifier are simulated and analyzed by the theory and program presented. The temperature、velocity and concentration variations of synthetic gas and ash composition are accomplished. The influences of coal gasifier working condition and vertical pipe parameters on the gas and ash cooling process are discussed. The law of solid-gas two phase turbulent flow and heat transfer is further revealed.

本文还应用上述理论和程序，在国内首次对气化炉激冷室下降管内合成气和灰份的流动和传热过程进行了数值计算和分析，得到下降管内合成气和灰份的温度、速度和浓度等参数的变化，还讨论了气化炉运行参数和下降管结构参数如气化温度、下降管尺寸、灰份性质等参数变化对合成气降温过程的影响，进一步揭示了下降管内气固两相的流动和传热规律。

Based on the data from heat water experiments for counter flow and cross flow cooling tower in laboratory with different water flow rate, air flow rate and water falling height, the equivalent diameters of water drop under corresponding conditions are obtained.

在逆流式冷却塔中，水的冷却分三部分：喷头、填料、雨区。但是，在进行填料的模拟试验中，要把上述三部分的热力特性分开，是很困难的。

Based on the data from heat water experiments for counter flow and cross flow cooling tower in laboratory with different water flow rate, air flow rate and water falling height, the equivalent diameters of water drop under corresponding conditions are obtained.

本文首先通过不同淋水高度、淋水密度、过塔风速等的逆流及横流试验塔的热水试验，求出相应条件下的淋水水滴当量直径，再在工业塔的条件下，利用水滴散热公式，计算出雨区散热效果，化为无因次数-冷却数，作出图及计算公式。

The distribution uniformity of external magnetic field is weakened by the cylindrical coil with some thickness ferric-core. The model of fluid flow and heat transfer of spot GTAW pool in longitude magnetic field controlling is developed for the first time, which incorporates the free surface, surface tension gradient, additional fluid drive forces owing to the external longitude magnetic, heat transfer between weld pool and medium, latent heat of solid/liquid phase and heat physical properties of materials.

综合考虑了焊接熔池表面张力温度系数的变化、熔池自由表面变形、外加纵向磁场对熔池流体的附加作用力、熔池与周围介质的换热、固/液两相区的熔化潜热、焊接材料的热物理性能等问题，将熔池自由表面变形、外加纵向磁场与熔池流场的计算过程相耦合同时进行分析，模拟了不同焊接材料、不同外加磁场以及不同焊接条件下外加纵向磁场GTAW定点焊接熔池流体流动与传热过程。

"By altering blood flow to the bill's surface, toucans can conserve body heat when it is cold, or cope with heat stress by increasing blood flow," he explained via e-mail.

在电子邮件中，他解释道：&通过改变喙表面血液流动，巨嘴鸟能够在天气冷的时候保存体温，通过增加血液流动来应付高温&

This invention provides a kind of superthin tube heat exchanger. Its feature is that the heat exchanger comprises hollow level header that the refrigerant can flow through, several refrigerant tubes insert in the level header, so it can distribute the refrigerant that flow in the level header.

本发明提供一种超细管道热交换器，其特征在于：上述热交换器由以下部件构成：中空的水平集管，可以使制冷剂流过；若干个垂直制冷剂管群，插在上述水平集管内，可以使在上述水平集管内流动的制冷剂得到分配；隔断，设置在上述水平集管内部的上述垂直制冷剂管之间，能够改变制冷剂的流动方向。

On the basis of structural features and heat transfer characteristics of a spiral-grooved tube heat exchanger,a three-dimensional geometric model was established for the flow and heat transfer in a heat exchanger with water serving as its working medium.

根据螺旋槽管换热器结构特点及传热特性，建立了以水为工质的换热器流动与传热的三维几何模型。运用有限元分析软件ANSYS模拟出换热器在换热过程中速度场与温度场的状况，分别得到了螺旋槽管内壁与外壁的对流换热系数。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。