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  #21  
Old 21-01-07, 04:58 PM
Phnom_Penh Phnom_Penh is offline
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Quote:
Originally Posted by name='NoL'
but hotter, as the heat from the compressor dump will be added and added and added.
The room will get colder due to the latent heat needed to thaw the ice/stuff in the fridge. For every gram of ice, you need 2 joules of energy to raise it's temp by 1 kelvin, whereas you need to lose 1 joule of energy to lower the air temp by 1 kelvin (and that's ignoring the latent heat from the ice).

If you had a freezer that is vanilla, ie no ice etc in it, and it's at room temp when you turn it on and open the door, if you stick with the conservation of energy, the room shouldn't get hotter or colder (but that is ignoring heat from the workings of the pump, but that would probably be negligible, but would depend on the size of the room).

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  #22  
Old 21-01-07, 05:14 PM
NoL NoL is offline
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You'd be incredibly suprised how much heat a compressor dumps into the room Phnom. As a phaser I know 200+watts is very easy with a single stage size compressor.

The ice won't form with the dorm open, and if its already there, when it melts off your rooms going to heat up. Go try it, open your fridge and freezer.
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  #23  
Old 21-01-07, 05:18 PM
Phnom_Penh Phnom_Penh is offline
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Quote:
Originally Posted by name='NoL'
You'd be incredibly suprised how much heat a compressor dumps into the room Phnom. As a phaser I know 200+watts is very easy with a single stage size compressor.

when it melts off your rooms going to heat up. Go try it, open your fridge and freezer.
Do you mean the heat it's pulling out of the freezer, or the heat it's generating from working?

But the melting cools the room down .
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  #24  
Old 21-01-07, 05:20 PM
llwyd llwyd is offline
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I don't know why people are arguing this. The fridge cooling concept will not work, and I don't mean 'will not work in theory', I mean it has been tried, over and over and has failed miserably. All the fridge is good for is greating a sealed container.

Secondly NoL is right, the room would eventually get warmer. A fridge works by removing warm air from the closed container and pumping it out the back, in the process making it nice and warm. If the fridge door is opened, the temperature in the fridge will equalise with that in the room (reducing the temperature very slightly), this air will then just go through a heating cycle in the fridges pump system, raising the temperature of the room. The same goes for a freezer phnom, just reaching an even temperature in the room would take longer.
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  #25  
Old 21-01-07, 05:21 PM
NoL NoL is offline
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The heat its generating from working. The heat thats pulled out of the sealed box, when its open, is pushed right back into the room and thus the box.

The melting won't last you forever.
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  #26  
Old 21-01-07, 05:28 PM
Phnom_Penh Phnom_Penh is offline
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@llwyd, no I'm not saying the fridge idea works.

Quote:
Originally Posted by name='NoL'
The heat its generating from working. The heat thats pulled out of the sealed box, when its open, is pushed right back into the room and thus the box.

The melting won't last you forever.
I presume the heat is generated by the pump etc, because the energy being taken out of the room should = that being dumped - the heat from the working of the pump
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  #27  
Old 21-01-07, 05:30 PM
llwyd llwyd is offline
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Quote:
Originally Posted by name='Phnom_Penh'
@llwyd, no I'm not saying the fridge idea works.
I didn't say you did mate, I said that the ice in the freezer wouldnt make much difference other than to prolong the warming
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  #28  
Old 21-01-07, 05:30 PM
NoL NoL is offline
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Yes the compressor will easily heat up the room.
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  #29  
Old 21-01-07, 05:32 PM
Phnom_Penh Phnom_Penh is offline
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Quote:
Originally Posted by name='llwyd'
A fridge works by removing warm air from the closed container and pumping it out the back, in the process making it nice and warm.
Erm wtf.
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  #30  
Old 21-01-07, 05:33 PM
NoL NoL is offline
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He's talking about making the room nice and warm.
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