- #1
ProPM
- 66
- 0
Hi,
I was looking at how refrigerators and air conditioners work as part of thermodynamics and I came across the expansion valve.
I am a bit confused. From what I understand, there is this expansion valve. When the liquid freon, or ammonia as used as an example in this website, goes through the evaporator it returns to the gaseous state. But, if the gas is allowed to expand, won't it do work at the expense of it's own internal energy, and, therefore, cool, and, if it cools, how come does it become a gas and not a solid?
I think the answer why is pretty simple but I just can't see it!
Thanks in advance!
I was looking at how refrigerators and air conditioners work as part of thermodynamics and I came across the expansion valve.
I am a bit confused. From what I understand, there is this expansion valve. When the liquid freon, or ammonia as used as an example in this website, goes through the evaporator it returns to the gaseous state. But, if the gas is allowed to expand, won't it do work at the expense of it's own internal energy, and, therefore, cool, and, if it cools, how come does it become a gas and not a solid?
I think the answer why is pretty simple but I just can't see it!
Thanks in advance!