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Is it hard to keep the space station warm?

Warm is pretty easy. Cool is harder.

The outside of the ISS can reach temperatures as high as 250 degrees F (121 C) on the sunny side and as low as -250 degrees F (-157 C) on the shady side. Inside the ISS are plenty of things that generate heat - such as human bodies, laptop computers, pumps, and other electrical devices. It takes a lot of work and complicated thermal control systems to remove that heat from its sources and transport it outside where it can be radiated to space.

For the parts of the ISS that do need active effort to keep warm, that is accomplished using simple electrical resistance heater pads, like the one shown in the below picture. They work on a simple premise - the thin pad has a wire running back and forth and back and forth many times within it. That wire is attached to an electrical source and electricity flows through the wire. The circuit has resistance and resistance results in heat. The wire gets warm, so the pad gets warm, and so whatever surface it is adhered to will also get warm. A thermostat will measure the temperature in that vicinity and the value of that temperature will be used to turn the electrical circuit for the heater pad on and off. There are hundreds of these pads throughout the vehicle.

It is important to use these heater pads to keep the shell of the vehicle warm, because if the temperature drops below the dew point, condensation will form on that surface. Accumulations of water can cause problems with electrical equipment and can promote the growth of microorganisms.


This information was taken from Quora. Click here to view the original post.

Was this information new to you? Do you understand the process better now?

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What are your thoughts on this subject?
6 Comments
lmoores
You have said there is extreme heat on one side and extreme cold on the other side does that mean that being in the exact middle of the ISS is tbe best place to be?
0
Dec 17, 2019 7:11PM
Cheryl McMeekin
Great info
0
Nov 11, 2019 4:46PM
ninakamwene
Interesting. Thank you.
0
May 13, 2019 9:01PM
Kk
Kk
Good read. Thank you!
0
Oct 24, 2018 11:42PM
Michael Johnston
hmmm ..fungus can grow in space
0
Oct 20, 2018 3:59AM
Johnny Rock
Always keep on the bright side of life as they say.
0
Oct 18, 2018 12:05AM

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