Gas volume at standard condition

[engmsh]

if the the Gas flow rate equal to .803 ft3/sec at temp.= 67.4 f and pressure=37.8 psia what will be this gas flow rate at standard condition

 

[Latexman]

In my 30+ years, I've seen many "standard conditions". What T and P is your standard?

Good luck,
Latexman

 

[Latexman]

And, here's a thread that may help you thread378-252997 . All you are doing is converting from condition 1 (temp.= 67.4 f and pressure=37.8 psia) to condition 2 (your standard T and P).

Good luck,
Latexman

 

[nlkw]

I agree with Latexman that the definition of "standard conditions" vary from industry and countries. Some of the common ones are:

For the American natural gas industry and OPEC standard conditions are typically Ps=14.73 psia and Ts=60F.

IUPAC uses Ts=0C and Ps=1 bar.

Some environmental engineering use standard conditions of Ts=15C or 20C and Ps=101.325 kPa (1 atmosphere).

I suggest that you use definitions that are common to your industry. So for eg. if you work in the petroleum sector, try looking up API's definition and stick to it.

 

[zdas04]

It is even worse than that, each contract has the ability to apply its own definitions. I dealt with one stream of gas that had to have three different "standards" (i.e., the contract was different than the State required which was different than Feds required). It is just arithmetic.

David

 

[Latexman]

It is just arithmetic.

Yep, and it's also a pain, an opportunity for errors and misunderstandings, but industry and government would never combine forces to institute one standard. That would be too much short term pain, but good for everyone in the long run. So, we deal with it.

Good luck,
Latexman

 

[engmsh]

In my 30+ years, I've seen many "standard conditions". What T and P is your standard?

the standard condition is Ps=14.73 psia and Ts=60F.

and the gas in question was air

 

[frankboyle]

I agree, "standard conditions" which differ in every country can originate problems, in some cases a client may accept to use mass flows (which are equivalent units without the "standard" ambiguity) but in general there is no space for discussion.