N m3 of a gas

• Jun 12, 2016

• #2

katmar

Chemical

Sep 18, 2003

1,909

ZA

Unfortunately not. See

https://en.wikipedia.org/wiki/Standard_conditions_for_temperature_and_pressure

This is why it is so important to state your standard conditions whenever you issue a calculation or specification. If someone issues a document to you make sure that you know what standard they are using.

Katmar Software - AioFlo Pipe Hydraulics

http://katmarsoftware.com

"An undefined problem has an infinite number of solutions"

 

Upvote 0 Downvote

• Jun 12, 2016

• Thread starter
• #3

plantprowler

Chemical

Aug 10, 2013

136

IN

Thanks @katmar.

Even if not universally accepted definitions, any idea if the industrial gas majors have agreed upon a definition? I was trying to look up the Praxair / Linde websites but did not find any guidance. In case it matters, this is for Hydrogen.

 

Upvote 0 Downvote

• Jun 12, 2016

• #4

katmar

Chemical

Sep 18, 2003

1,909

ZA

No. It varies with the geographical area and with the type of industry, and with the whims of the people involved. All documents should state the standard conditions. If someone issuing a document is unable or unwilling to clarify their standard conditions then be suspicious of everything else in the document.

Katmar Software - AioFlo Pipe Hydraulics

http://katmarsoftware.com

"An undefined problem has an infinite number of solutions"

 

Upvote 0 Downvote

• Jun 12, 2016

• #5

25362

Chemical

Jan 5, 2003

4,826

CA

Visit thread798-106556.

 

Upvote 0 Downvote

• Jun 12, 2016

• #6

LittleInch

Petroleum

Mar 27, 2013

22,991

GB

It also depends on the accuracy you require. In reality the difference between the different base data is not huge, unless you're dealing with trillions of cubic ft / m when it makes a huge monetary difference.

But one cylinder it doesn't.

Somewhere in the middle is usually a good point and the 15C / 60F and 1.01325 bara / 14.696 psia is usually my start point if no one has defined it and the odd decimal point isn't that important.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

Upvote 0 Downvote