radiation transfer 辐射传递,放射传递 heat radiation 热辐射 radiation heat 辐射热 radiation of heat 热的辐射,热辐射 transfer of heat 传热 heat transfer 换热,热传递,传热 相似单词 radiation n. 1.[U,C]辐射;放射线 2.[U]辐射的热(或能量等) 3.[U](也作radiation therapy)放射疗法 transf...
Heat transfer by thermal radiation is transfer of heat by electromagnetic waves. It is different from conduction and convection as it requires no matter or medium to be present. The radiative energy will pass perfectly through vacuum as well as clear air. While the conduction and convection ...
辐射传热(heattransferbyradiation) 温度高于绝对零度的物体内的带电粒子振动或转动时向空间辐射出电磁波,而另一物体接受到电磁波,并把它转变为热能,这样就形成了辐射传热。 温度为T、表面积为A的物体在单位时间内的辐射的热量q=AT4,其中为发射率,与物体的材料和它的表面状况有关,是斯特藩-玻尔兹曼常数,=56.710...
当一面积为A1、温度为T1的物体被另一温度为T2的物体包围时,两物体之间的辐射传热为q=A1F1-2T24-T14。这篇辐射传热heattransferbyradiation物理小百科知识,你推荐给朋友了么?*;
辐射传热(heattransferbyradiation) 温度高于绝对零度的物体内的带电粒子振动或转动时向空间辐射出电磁波,而另一物体接受到电磁波,并把它转变为热能,这样就形成了辐射传热。 温度为T、表面积为A的物体在单位时间内的辐射的热量q=AT4,其中为发射率,与物体的材料和它的表面状况有关,是斯特藩-玻尔兹曼常数,=56.710...
Improvement of heat transfer by radiation catalytic semiconductor-coated material For nuclear reactor systems, the critical heat flux (CHF) data is very important because it limits reactor efficiency. Improvement of CHF requires that the cooling liquid can contact the heating surface, or a high-wettab...
1、第五章 辐射换热(Radiation Heat Transfer) 5.1辐射的基本概念 一、辐射的本质 辐射物体通过电磁波传递能量的过程 热辐射是由于物体内部微观粒子的热运动状态改变时,而将部分内能转变成电磁波的能量发射出去的过程。热辐射的三大特点 可以在真空中传播; 能量形式在传播过程中发生了变化 一切物体只要温度大于0K,就...
Three ways to transfer heat All three heat transfer methods have their application fields. For example a mold is best heated by aninserted heater(conduction), while glass can be bent usinginfrared heaters. Oftentimes a combination of incident heat is used (like radiation combined with convection)...
In the case of hypothetical accidents, temperatures of approximately 2000 to 3000/degree/C are expected in the core of a pebble-bed high temperature reactor (HTR). At such high temperatures the transport of heat by radiation is the most important mechanism. For the calculations of temperature pa...
第五章辐射换热(RadiationHeatTransfer)5.1辐射的基本概念 一、辐射的本质 辐射——物体通过电磁波传递能量的过程 热辐射——是由于物体内部微观粒子的热运动状态改变时，而将部分内能转变成电磁波的能量发射出去的过程。热辐射的两大特点可以在真空中传播；能量形式在传播过程中发生了变化 5.1辐射的基本概念 由于起因...