Lamilloy is a new cooling technology which has advantage of combining film cooling , internal impingement , large internal heat transfer area and enhanced heat exchange by pin fin array 多孔层板冷却技术集冲击冷却、对流冷却和气膜冷却于一体,是一种新型的冷却方式,具有冷气消耗量少,冷却效率高的优点,应用日益广泛。
In fact , saturn is very similar to jupiter in many ways , like the high speed rotation , the internal heating mechanism , the atmosphere composition , the presence of metallic hydrogen core and the strong magnetic field , etc 事实上,土星和木星十分相似,同样以高速自转,并有类似的内部热能转化机制大气成分金属氢核心和很强的磁场等等。
Most of earth ' s internal heat is generated by four long - lived radioisotopes ? potassium 40 , thorium 232 , uranium 235 and uranium 238 ? that release energy over billions of years as they decay into stable isotopes 地球内部的热能主要来自半衰期较长的四种放射性同位素钾40 、钍232 、铀235与铀238 ,它们在几十亿年来逐渐衰变成稳定的同位素,同时释放能量。
The components of this system are a cross - flow finned - tube evaporator , cross - flow finned - tube gascooler , a reciprocation compressor , a gas - liquid seperator , a double pipe internal heat exchanger and a throttling valve 系统由一个叉流翅片管式蒸发器、一个叉流翅片管式冷却器、一台往复式压缩机、一个气液分离器、一个套管式回热器、一个节流阀组成。
Adopting appropriate transformation , this paper transformed the heat conduction problem with internal heat source into a non - source heat conduction problem and solved the problem successfully by the method of separating the variables 通过将电场量引入温度场方程,作适当变换,把含内热源的热传导问题转化?不含内热源的热传导问题,然后可以采用分离变量法进行求解。
Internal heat is the heat source from the interior of celestial objects, such as planets, brown dwarfs, and stars, caused by gravity, nuclear fission and decaying radioactive materials. The amount of internal heating depends on mass; the more massive the object, the more internal heat it has.