When dealing with HVAC/R
2006-08-09 13:06:23 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
An adiabatic expansion means that volume changes while heat (though not necessarily temperature), pressure, and entropy stay the same. The process is reversible, and q=0.
2006-08-09 13:12:18 · answer #1 · answered by answerator 5 · 0⤊ 0⤋
Adiabatic expansion refers to the cooling of gases as they rise in the atmosphere.As they rise, there is less pressure and they cool at a rate of about 5 degrees per 1000 feet. Also think of air escaping from a bicycle tire, it feels cold.Gas laws state that temperature and pressure and volume are related. As pressure is released, volume expanding, temperature decreases.Refering to HVAC all I can say is in air conditioning, as the coolant (which was pressurized to become a liquid)is heated it evaporates which is a cooling process.
2006-08-09 20:40:37 · answer #2 · answered by science teacher 7 · 0⤊ 1⤋
Yeah, increase in volume while heat stays the same.
2006-08-09 20:50:53 · answer #3 · answered by jsn77raider 3 · 0⤊ 0⤋