To counter the problems above, the defining method of ideal cycle heat efficiency is improved firstly.

针对上述问题，文中首先对理想循环热效率的定义方法进行了改进。

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Then based on the improved ideal cycle heat efficiency, the improved equivalent enthalpy drop method is given.

然后，基于改进的理想循环热效率，提出了等效热降法的改进算法。

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The experiment and simulation results show that the energy efficiency of air cycle heat pump dry technology is greatly higher than that of the ventil…

通过实验和模拟分析的方法表明，与传统的通风加热干燥技术相比，空气循环热泵式干燥机的能量利用效率有显著提高。

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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。

麻省理工公开课 - 热力学与动力学课程节选

There's no change in them, and then we also looked at some at non-state functions, work and heat, and saw that those aren't zero going around a cycle. Of course you can do work in a cyclic process, and heat can be exchanged with the environment at the same time.

它们不会有变化，然后我们研究了,一些非态函数，功和热量，并看到,沿着循环行进一周的话,它们并不是零，当然你可以在,一个循环过程中做功，而同时热量可以在系统,与外界环境之间进行交换。

麻省理工公开课 - 热力学与动力学课程节选

It expands. You change your constraints on your system, you heat it up some more, then you take the heat source away, and you put it back in contact with the atmosphere. And you cool it a little bit, change the constraints, cool it a little bit more, and heat, and you've got a closed cycle engine.

让它与大气接触冷却,改变约束，使它继续冷却，然后又再次加热,这就是循环热机，我们以前也研究过，更复杂的机器。

麻省理工公开课 - 热力学与动力学课程节选

"An air-conditioning unit is just the physical manifestation of the Carnot Cycle - which is talking about heat exchange between two closed systems, " he droned.

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