[TheForge] Vapor/Gas (Was: Building a propane forge)

GHS [email protected]
Thu Feb 19 10:33:04 2004


Andy Vida wrote:

> 
> GHS wrote:
> 
>>Mike wrote:
>>
>>
>>>So "vapor" is the same as "gas" except when the engineers need to
>>>highjack "vapor" so they can give a name to some stuff involved in a
>>>messy, poorly understood dynamic process.
>>
>>The term I was taught for refrigeration was "saturated vapor".
>>Your suggested usage is consistent with that term. I can see it being
>>reduced to just vapor in techtalk.
> 
> 
> 	Would I be in error to take this term to mean a vapor whose
> 	state is such that increases in pressure or decreases in
> 	temperature would cause a condensation to the liquid phase?

Almost, What you are describing is the "dry" vapor/gas just to the high 
energy side of a saturated vapor.

It is the point at which the temperature/pressure allows both a liquid 
and gas to exist simultaneously (Think fog). The gas has absorbed enough 
additional  energy to change state but not temperature. This is a lot of 
energy it is changing states that makes the AC work.

Mike Graf


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