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And then there's a cold reservoir T2 at some lower temperature T2.
另外有一个冷的热源,温度为。
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What that means is we want to run the hot reservoir as hot as possible and the cold reservoir as cold as possible.
也就是说我们希望高温热源温度尽可能高,同时低温热源温度尽可能低,从原理上说。
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The colder that cold reservoir is, the hotter that hot reservoir is, the better off we are.
低温热源温度越低，高温热源温度越高，效果就越好。
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And we had the similar statement by Kelvin about the heat engine that required that some heat gets dumped into a cold reservoir in the process of converting the heat from the hot reservoir into work.
相同的陈述,同样的有开尔文表述：,把热量完全从高温热源,转移至低温热源的过程中,必然有功的输出。
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The whole thing is being powered by sending heat from the hot to the cold reservoir.
所要做的所有事情,就是把热量从高温热源输送到低温热源。
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So the expansion against lower pressure draws less heat from the hot reservoir right.
所以压强较低时的膨胀,从高温热源吸收的热量更少。
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So let's take our hot reservoir and draw it bigger.
这是我们的高温热源，把它画得大一点。
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You couldn't just run something successfully in a cycle and get work out of it, using the heat from the hot reservoir, without also converting some of the heat that came in to heat that would flow into a cold reservoir.
如果一样东西在循环工作过程中,只有热从高温热源中流出，而没有热流入低温热源，那么此过程,不可能对外做功,不可能把所有热。
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Here is our colder reservoir.
这是低温热源。
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It's taking heat from the hot reservoir.
从高温热源吸取热量。
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What's the temperature of the hot reservoir?
高温热源的温度是多少？
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What's the temperature of the cold reservoir?
低温热源的温度又是多少？
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As T2 goes to zero, the cold reservoir, then this goes to zero and our efficiency approaches one.
是当T2达到零，也就是低温热源，达到零度的时候,效率可以达到一。
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So the way I've got things written here, q1 Heat's flowing from the hot reservoir to the engine that runs in a cycle.
我把这些都这些这里，是正的，q1，is，positive,热从高温的热源,传到循环工作的热机，对外做功。
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