UC知道跪求~~~~电力英语翻译~~~~~
来源：百度知道 编辑：UC知道 时间：2024/06/13 21:20:15
The use of a totally enclosed ventilating system brings up the possibility of using hydrogen as the cooling medium. Hydrogen has the following properties which make it well suited to the purpose:
It density is only about 0.07 that of air at the same temperature and pressure, and therefore windage and ventilating losses are much less
Its specific heat on an equal weigh basis is about 14.5 times that of air. This means that for the same temperature and pressure, hydrogen and air are about equally effective in their heat-strong capacity per unit volume. But the heat transfer by forced convection between the hot parts of the machine and the cooling gas is considerably greater with hydrogen than with air.
The life of the insulation is increased and maintenance expenses are decreased, because of the absence of dirt, moisture, and oxygen.
The fire hazard is eliminated. A hydrogen-air mixture will not explode if the hydrogen content is above 70 percent. As a matter of fact
It density is only about 0.07 that of air at the same temperature and pressure, and therefore windage and ventilating losses are much less
Its specific heat on an equal weigh basis is about 14.5 times that of air. This means that for the same temperature and pressure, hydrogen and air are about equally effective in their heat-strong capacity per unit volume. But the heat transfer by forced convection between the hot parts of the machine and the cooling gas is considerably greater with hydrogen than with air.
The life of the insulation is increased and maintenance expenses are decreased, because of the absence of dirt, moisture, and oxygen.
The fire hazard is eliminated. A hydrogen-air mixture will not explode if the hydrogen content is above 70 percent. As a matter of fact
使用一个全封闭的通风系统提出了有可能利用氢作为冷却介质。氢有下列各款使它非常适合这个目的。
它密度大约只有0.07,空气在相同的温度和压力,因此偏差和通风损失更少
其具体的热量在平等的体重约14.5时代的基础上的空气。这意味着对相同的温度和压力,氢和空气是在他们的heat-strong大约同样有效,单位体积的能力。但是传热强制对流热部件之间的机器和冷却气体与氢显著增加,比有空气。
生命的保温加长,维护费用降低,因为没有灰尘、水分、氧气。
火情被消灭。一个hydrogen-air无爆炸混合物氢含量的70%以上。事实上,hydrogen-cooled机器是轻易建成,以便他们能安然无恙
使用一个完全封闭的通风系统带来的可能性使用氢气作为冷却介质。氢具有以下特性，使它非常适合用途：
它的密度只有约0.07空中在同一温度和压力，因此，风力和通风损失少得多
其具体热在平等基础上的重量约14.5倍，空气中。这意味着，在同一温度和压力，氢气和空气中大约同样有效的热强有力的能力单位体积。但传热的强迫对流热之间的部分机器和冷却气体是相当大的氢比空气。
生活的绝缘增加和维修费用降低，因为没有泥土，水分和氧气。
火警危险消除。氢混空气不会爆炸，如果氢含量超过百分之七十。事实上，氢冷机很容易构造，使它们可以无损的爆炸。