-
It is cold outside. The wind blows to make it even colder.
VOA: special.2009.01.26
-
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。
-
The reversible process is going to be colder because it has to expend more energy.
可逆过程降温更多,因为输出的能量更多。
-
Any colder, and they might be damaged.
VOA: special.2009.11.30
-
was colder, that means that this is the wrong graph here.
,这幅图。
-
Other infectious disease experts,however, have insisted Australia's is over-reacting to the outbreak of the A-H1N1 virus, insisting that,so far, the disease is no worse than other strains of influenza that kill hundreds of Australians every year during the colder winter months.
VOA: standard.2009.05.30
-
Here is our colder reservoir.
这是低温热源。
-
OK, so which is colder?
哪种情况温度更低？
-
But now, so this is where the refrigeration comes in. So if you take a gas, and you're below the inversion temperature and you make it go through this irreversible process, the gas comes out colder from that side than that side.
这就是冰箱的原理,如果在低于转变温度,的情况下我们将气体经过,这个不可逆过程,气体出来的温度将比这边低。
-
One is going to be colder than the other, maybe.
可能有一种会降得更多。
-
PROFESSOR BAWENDI: So the question then, which one is colder?
我的问题是，哪一边更冷？
-
And these verbal descriptions lead to some pictures that I put up and I'll put up again about how you might try to accomplish something like run an engine or move heat from a colder to a warmer body.
这些言语的描述有助于你们理解我讲过的,而且还要再讲的一些物理图像,比如一台发动机,是怎么运行的,或热怎样从冷的物体传到热的物体。
-
T2 PROFESSOR BAWENDI: T2 irreversible should be colder?
可逆过程的,更冷？
-
How many people say that T2 irreversible is colder than T2 reversible?
有多少人认为不可逆过程,的T2更低？
-
STUDENT: T2 reversible should be colder.
学生：可逆过程的T2更冷。
-
So in this experiment here, delta p is less than zero. You need to have this whole thing greater than zero. So delta T is less than zero as well. So if you're below the inversion temperature and you do the Joule-Thomson experiment, you're going to end up with something that's colder on this side than that side.
所以在这个实验中，Δp小于零,这全部都大于零,因此ΔT也小于零,所以如果在低于转变,温度的情况下做焦耳-汤姆孙实验,最后的结果是,这边的温度比这边低。
应用推荐