On Tuesday, May 9, 2017 at 11:37:03 AM UTC-4, Neon John wrote:
On Mon, 08 May 2017 19:45:11 -0500, dpb wrote:

On 05/08/2017 6:57 PM, Neon John wrote:
...

You absolutely can NOT use the ideal gas law because none of the
gasses are ideal. The Van der Walls equation must be used. ...

For the purposes here and at PT talking of, the correction will be of
only a few per cent, certainly within 10% or so.

Actually it will be much more significant than 10%. Why don't you set
up a model and calculate ideal and real gas laws and compare the
results before you continue to mislead this fellow.

even a 10% error is a huge amount of refrigerant for the tank size he
described.

Mine IS the voice of experience speaking.

Huh, OK. It's not something I ever measured.
So for dry air at what pressure is the error ~10%?
(I guess I can google it.)

George H.

John
John DeArmond
http://www.neon-john.com
http://www.tnduction.com
Tellico Plains, Occupied TN
See website for email address