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cryptojoe
11-05-2006, 11:31 PM
I have found online calculators for water/vapor pressure, and temperature to pressure conversion calculators. However, I need to find out what the temperature of Water/Vapor will be at a specific pressure.

Does anyone know of an online conversion calculator for Pressure to Temperature?

US Iceman
12-05-2006, 03:01 AM
Joe,

Is this what you are looking for?

If it is, let me know and I can convert the pressure units or temperature into the units desired.

Or, I can provide the curve fit equation if this would be more helpful.

cryptojoe
12-05-2006, 05:04 AM
Looks good.

Let me ask, if I have the following data:

889.25 mmHg (17.198 psi) at 104.4 C - (220F)

for a 1/2" copper pipe and I drop the pressure by increasing the pipe dimension to 1", 2", 3"...etc... would my pressure drop by half each time? If not, at what rate can I expect a pressure drop (percentage) 25%, 10% etc...

I hope my question clearer than mud.

Speaking of mud, do you recall that guy from Thailand asking questions about making an air conditioner from a refrigerator?

Well, if all goes well with this project, it would be a portion of a passive solar cooling unit that would work very as well in the tropics as it would in the Las Vegas desert.

Joepompous
13-04-2010, 12:30 AM
I am looking for what temperature in degrees fahrenheit would a fixed volume of gas need to be heated to in order to double its pressure if it starts out at 25 degrees fahrenheit

sedgy
13-04-2010, 10:32 AM
hi jo , what type of gas and is it just vapour or is there any liquid gas apparent ?

mad fridgie
13-04-2010, 12:42 PM
I am looking for what temperature in degrees fahrenheit would a fixed volume of gas need to be heated to in order to double its pressure if it starts out at 25 degrees fahrenheit
Thinking back to my school days (Eve was my teacher and Adam was the head master)
If "V" is constant then

p1t1=p2t2 (boyles law i think?, but I think not?)