×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Converting mg/Nm3 CH4 to PPBV

Converting mg/Nm3 CH4 to PPBV

Converting mg/Nm3 CH4 to PPBV

(OP)
I am looking at an engine specification that has a maximum limit on organic silicon in the gas to a combustion engine.  I know the concentration of the gas in part per billion and need to know whether further treatment is required. The specification allows for "5 mg/Nm3 CH4."  How do I convert this to PPB.
 

RE: Converting mg/Nm3 CH4 to PPBV

This looks very much like a request for homework help.  Can you clarify the reasoning behind your posting?

Valuable advice from a professor many years ago:  First, design for graceful failure.  Everything we build will eventually fail, so we must strive to avoid injuries or secondary damage when that failure occurs.  Only then can practicality and economics be properly considered.

RE: Converting mg/Nm3 CH4 to PPBV

In industrial hygiene, the conversion formula is as follows:
  ppm(V)=(24.45/Molecular Weight)*mg/cu.m..  The value 24.45 is @ 25 deg.C..  Divide the above answer by 1000 to get ppb(V).

 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources