So the pressure is 200Pa gauge or 101525 absolute @ 22'C or 295Kelvin.
I'm trying to find P2 after a 1'C pressure drop so 21'C.
P2 = P1*T2/T1 therefore P2 = 101525*294/295. The answer for that is coming out as 101180.85 absolute or -144.15Pa gauge.
So this appears to make a fairly big difference, unless I'm doing something wrong.
Results:
200Pa @ 22'C
-144Pa @ 21'C
-488 @ 20'C
-831 @ 19'C
So fairly substantial changes there.
Sorry, I probably should have been a bit more detailed and specific.
The 1m X 1m X 1.5m chamber is empty (other than the air) and positioned in a room that is currently 17'C. The room is also positive 30Pa to atmospheric. The chamber is temperature/humidity controlled and sits at 21'C and when...
[Moderator's note: Recategorized thread to "Basic".]
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