查询词典 heat radiation

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

Based on a computing model of floor heating residences, indoor thermal environment and heat distribution under the effect of heat charge/discharge, operation control and solar radiation has been concluded. Concept and formula of equivalent heat supply has been put forward which indicate that actual heat supply will be equal to the sum of design heat supply and equivalent heat supply. Recommend coefficient has been given taken Dalian as an example. Computed according to the new method, design heat supply can be reduced to 37% in cloudy day and 43.3% in sunny day, energy saving effect is very obvious. In Tromb wall solar house, effect of concrete wall on indoor temperature swing and attenuation of temperature wave is very obvious. While the outdoor air-temperature swing exceeds 10℃, indoor air-temperature swing belows 3℃. In the experiment, maximal difference in temperature between inner surface and outer surface of the 300mm wall exceeded 10℃. Heat storage and collector efficiency varies adversely according to solar radiation. Factors such as thickness, material, absorptance of the wall and permeation of the glass cover all have big influence on heat storage and collector efficiency. There exsisted an optimal thickness of the wall, which can make the best of heat storage and collector efficiency. Most of the heat stored in conventional Trombe wall during the daytime has been lost to the outside at night without heat preservation. Heat preservation on the outside surface of the wall has effectively improved heat release performance of the wall at night, heat supply to the room has increased too.

通过建立的地板采暖系统动态热性能分析模型，得出了在蓄放热特性、运行方式和太阳辐射等因素耦合作用下的室内热环境及热量分配比例，提出了等效供热量的概念及计算公式，指出实际所需供热量应等于设计供热量加上等效供热量，并以大连为例，给出了等效供热量的修正系数，以新方法计算，阴天可减少设计供热量37％，晴天最大可以减少设计供热量43.3％，节能效果显著；集热蓄热墙式太阳房中，混凝土蓄热墙的室温均一化效果和对温度波的削减作用非常明显，当室外温度波动最大幅度超过10℃时，室温波幅不超过3℃，实验中300mm厚墙体内外表面温差超过10℃；墙体蓄热效率与集热效率随太阳辐射照度的变化呈相反的变化趋势；墙体厚度、材料、表面吸收率以及盖板透过率等因素对集热和蓄热效率均有较大的影响，存在一个最佳的墙体厚度值，使得墙体集热和蓄热综合性能最优；传统的蓄热墙夜间没有外保温，辐射散热损失很大，研究表明墙体外保温方式明显改善了蓄热墙夜间的散热性能，增加了向室内的供热量。

In this paper, preliminary FDS fire chamber to simulate the flue gas generated through the corridor adjacent to the room near the migration laws, an analysis of indoor air flow field and the movement of smoke layer, and through the simulation of fire scenes, in a simple form of visual dynamic display of the entire process of fire, in the simulation process to obtain more accurate fire-related parameters such as temperature distribution, gas flow and heat radiation, and analysis of simulation results through the fire chamber of the flue gas migration characteristics, results showed that the chamber in the absence of fire smoke control measures, the process of the spread of smoke filled the first chamber is at the top, with the passage of time, the proliferation of slowly downward until the entire chamber is full, and then through the corridor smoke quickly spread to the nearby chamber.

本文运用FDS初步模拟了腔室火灾产生的烟气通过毗邻的走廊向附近房间迁移的规律，分析了室内空气流场和烟气层运动状况，并通过对火灾场景的模拟，以简单直观的形式动态显示出火灾发生的全过程，在模拟过程中获得较准确的火灾相关参数，如温度场分布，烟气流动及热辐射等，并通过模拟结果分析腔室火灾的烟气迁移特性，结果表明着火腔室在无防排烟措施的情况下，烟气扩散的过程是首先充满腔室顶部，随着时间的推移，慢慢向下扩散，直至将整个腔室充满，然后烟气通过走廊快速向附近腔室蔓延。

It was concluded that the degradation of lube oil was caused by the leakage of K2CO3 caustic liquid resulted from the damaged mechanical seal, low sealing water pressure, high liquid level of dripping sum, poor heat radiation of the shaft seal of lean liquid pump and large space of shaft protection ring etc.

分析了中原大化集团合成氨装置贫液泵润滑油系统滤油器压差迅速升高的原因，指出主要是机械密封损坏或密封水压过低、滴水槽液位过高、贫液泵轴封散热不好、轴承护圈间隙过大等，从而使K2 CO3漏入碱液润滑油系统，导致润滑油变质。

To warm that geothermal heating is not higher than 60℃ temperature of hot water or heating cables, Buried in the floor under the geothermal system, heating coil of the ground, even to a kind of indoor heat radiation heating methods.

地暖即地热辐射采暖，是将温度不高于60℃的热水或发热电缆，暗埋在地热地板下的盘管系统内加热整个地面，均匀地向室内辐射散热的一种采暖方式。

Geothermal heating Profile Geothermal heating, or to warm, is not higher than 60 degrees Celsius temperature of hot water or heating cables, Buried in the floor under the geothermal system, heating coil of the ground, evenly through the ground to a kind of indoor heat radiation heating methods.

地热辐射采暖简介地热辐射采暖，简称地暖，是将温度不高于60摄氏度的热水或发热电缆，暗埋在地热地板下的盘管系统内加热整个地面，通过地面均匀地向室内辐射散热的一种采暖方式。

Based on safe heat radiation intensity 81.5 m is obtained as the safety distance for personnel on the ground according to the requirement of the standard SH3009-2001. This safety distance is important for emergency response and personal protection.

根据《石油化工企业燃料气系统和可燃性气体排放系统设计规范》SH3009-2001中规定的人体所能接受的安全热辐射强度计算得出地面操作人员安全间距的参考值为81.5m，对事故状态时的应急救援和人员防护起到一定的指导意义。

Coal-bed gas, a two-blade sword, as an accompanied resources as well as a clean energy, has a capacity of non-pollution and an efficiency of heat-Radiation.

煤层气是把&双刃剑&，作为煤层的一种伴生资源，是一种清洁的能源。

There is larger clearance between S9-M power transformer terminal box lower side and transformer heat-radiation fi ns, foreign objects are easy to get into terminal box to make short circuit between phases and cause transformer tripping or damages.

S9-M电力变压器接线端子箱下面与变压器散热片之间存在较大空隙，外界物体容易进入端子箱内，造成相与相之间短路，导致变压器跳闸或损坏。

Heat radiation thermometer is most suitable for monitoring the surface temperature of concrete slab in deicing or snow-melting.

在综合考虑各种复杂因素后，提出导电混凝土用于融雪化冰时表面温度的最佳监测方法是辐射法。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。