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Jonathan Calvert
Minmatar
Empire Mining and Trade
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Posted - 2009.06.12 18:23:00 -
[1]
 Originally by: Washell Olivaw
Originally by: Vyllana
space provides a 2.8 K background heatsink
It doesn't. There's nothing in space to take the energy and the only way to lose heat is through infrared radition which is a terribly slow process. Way to slow to deal with the rapid buildup of heat in weapons systems. You'd have to have cooling fluid/gas on board which is either vented or stored seperately after use and allowed to cool afterwards.
Ironically enough, keeping things cool in space is a much bigger problem than keeping things warm.
Why is it then that when they had to turn off all the electronics in Apollo 13 (real life, not the movie), and shut the window shades, that it became very cold? Where was the heat going? |
Jonathan Calvert
Minmatar
Empire Mining and Trade
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Posted - 2009.06.12 20:01:00 -
[2]
Originally by: Washell Olivaw
Originally by: Jonathan Calvert
Why is it then that when they had to turn off all the electronics in Apollo 13 (real life, not the movie), and shut the window shades, that it became very cold? Where was the heat going?
Dropping from room temperature to mild freezing over hours is different from actively cooling a laser weapon system under battle needs.
Understood, but you said the hear only leaves through infrared, and theirs nothing to absorb the hear. So, where is it going? Or is it going through infrared? For that matter what happens when they eject liquids and they instantly solidify?
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Jonathan Calvert
Minmatar
Empire Mining and Trade
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Posted - 2009.06.15 11:58:00 -
[3]
Originally by: Washell Olivaw
Originally by: Jonathan Calvert
Understood, but you said the hear only leaves through infrared, and theirs nothing to absorb the hear. So, where is it going? Or is it going through infrared? For that matter what happens when they eject liquids and they instantly solidify?
Doesn't go anywhere. It's infrared radiation travelling to space.
Ejected liquids (at room temperature) don't solidify. Lack of atmospheric pressure means the boiling point is lowered to below room temperature. They'll start boiling and disperse into space as steam/gas. Stop mistaking sci-fi movies for accurate science.
Which movies would that be? I took the examples from the log of the real apollo 13 astronaughts.
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