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Author Topic: Is hydrogen a good coolant?  (Read 12342 times)

Offline erickejah

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Is hydrogen a good coolant?
« on: 13/03/2009 14:34:41 »
What characteristics Hydrogen has over other elements that makes it the best coolant?
« Last Edit: 20/03/2009 09:42:39 by chris »


 

Offline lancenti

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Re: Is hydrogen a good coolant?
« Reply #1 on: 13/03/2009 18:07:51 »
I didn't think H2 would be a good coolant, especially since it can be combusted fairly easily.

But for the sake of discussion, it may have something to do with how it is quite close to an ideal gas.
 

Offline lightarrow

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Re: Is hydrogen a good coolant?
« Reply #2 on: 13/03/2009 20:41:57 »
What characteristics Hydrogen has over other elements that makes it the best coolant?
Do you mean in turbo generators?
It's because of low density, high specific heat, and high thermal conductivity:
http://en.wikipedia.org/wiki/Hydrogen-cooled_turbogenerator
 

Offline Chemistry4me

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Re: Is hydrogen a good coolant?
« Reply #3 on: 14/03/2009 02:19:27 »
Hydrogen or Helium erickejah?
 

Offline erickejah

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Offline Raghavendra

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Re: Is hydrogen a good coolant?
« Reply #5 on: 16/03/2009 09:58:58 »
Bcz it is lighter then air
 

Offline Chemistry4me

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Re: Is hydrogen a good coolant?
« Reply #6 on: 16/03/2009 10:03:13 »
Because it is lighter than air? What? How?
Since when has that ever been the reason? ???
 

Offline Raghavendra

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Re: Is hydrogen a good coolant?
« Reply #7 on: 16/03/2009 10:20:33 »
catch a ballon  filled with H you will understand
 

Offline Chemistry4me

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Re: Is hydrogen a good coolant?
« Reply #8 on: 16/03/2009 10:23:59 »
Well, since I don't have a hydrogen balloon on hand, could you please tell me what happens that will make me understand that a gas lighter than air is a good coolant?
 

Offline Raghavendra

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Re: Is hydrogen a good coolant?
« Reply #9 on: 18/03/2009 07:34:32 »
Hmmm wait a minute i will have a cup of coffee
 

Offline Chemistry4me

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Re: Is hydrogen a good coolant?
« Reply #10 on: 18/03/2009 07:38:04 »
I can hardly wait.
 

Offline Raghavendra

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Re: Is hydrogen a good coolant?
« Reply #11 on: 18/03/2009 07:50:21 »
ok !!
 

Offline Chemistry4me

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Re: Is hydrogen a good coolant?
« Reply #12 on: 18/03/2009 07:55:02 »
Go on, what is the answer?
 

Offline Raghavendra

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Re: Is hydrogen a good coolant?
« Reply #13 on: 18/03/2009 08:11:07 »
Hmm seee Hydrogen and deuterium are colorless, odorless gases and hence not easily detected by human senses. Hydrogen air mixtures are flammable over a large range of relative concentrations: from 4 \%  to 75  \%  H2   by volume. Detonation of explosions can occur with very low energy input, less than fraction 1by 10 that required by mixtures of air and gasoline. At temperatures above -250 C hydrogen gas is lighter than (STP) air and hence will rise. At atmospheric pressure the ignition temperature is approximately 1000 degrees F but mixtures at pressures of 0.2 to 0.5 Atm can be ignited at temperatures as low as 650 degrees F. Hydrogen mixtures burn with a colorless flam..

 I think now you got it!!!
 

Offline Chemistry4me

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Re: Is hydrogen a good coolant?
« Reply #14 on: 18/03/2009 08:17:03 »
Uhhhh....





No.

------
I don't see how catching a hydrogen balloon is supposed to make me understand that hydrogen is not a good coolant (which I presume is what you are trying to say). :)
« Last Edit: 18/03/2009 08:18:40 by Chemistry4me »
 

Offline Raghavendra

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Re: Is hydrogen a good coolant?
« Reply #15 on: 18/03/2009 08:21:19 »
I think we have to meet directly to explain, don't worry
 

Offline erickejah

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Re: Is hydrogen a good coolant?
« Reply #16 on: 19/03/2009 22:58:16 »
what about me ??? ???
 

Offline Raghavendra

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Re: Is hydrogen a good coolant?
« Reply #17 on: 20/03/2009 06:31:01 »
 Ya you too, But what where to meet in Finland ........
 

Offline erickejah

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Offline Chemistry4me

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Is hydrogen a good coolant?
« Reply #19 on: 22/03/2009 03:40:06 »
What on Earth is that for? ???
 

Offline Raghavendra

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Offline Chemistry4me

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Is hydrogen a good coolant?
« Reply #21 on: 22/03/2009 10:07:37 »
Hollyhood?

You'll get mugged before you can say 'Holly! My wood!'
 

Offline erickejah

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Is hydrogen a good coolant?
« Reply #22 on: 22/03/2009 18:37:24 »
 :D :D
 

Offline Raghavendra

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Is hydrogen a good coolant?
« Reply #23 on: 23/03/2009 10:41:53 »
 YA YA It's joke  ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D
 

Offline Raghavendra

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Is hydrogen a good coolant?
« Reply #24 on: 23/03/2009 10:42:56 »
what are you guys waiting for book a ticket ...... 

  Come to My hood i will show you ......  How to mug
 

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Is hydrogen a good coolant?
« Reply #24 on: 23/03/2009 10:42:56 »

 

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