×
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

Mollier charts for natural gas (methane)

Mollier charts for natural gas (methane)

Mollier charts for natural gas (methane)

(OP)
Can anyone pls direct me to a website to download (free) a Mollier chart for natural gas (methane will also do) ... especially looking for Excel spreadsheet type data & chart format.

I need to do some comparative calculations regarding isenthalpic vs isentropic expansion (for natural gas distribution & pressure regulation) and the value proposition considering the cost of natural gas & value of electricity.

RE: Mollier charts for natural gas (methane)


See thread687-127478 (4 Jul 05 17:59), the ALLPROPS program may interest you.  

RE: Mollier charts for natural gas (methane)

(OP)
RGasEng,
I checked the posting and the link returns with a "forbidden" reply ... I've even navigated around UI's site to CATS ... but still no access.
Any other suggestions pls?
Thx

RE: Mollier charts for natural gas (methane)

MrPiP,
I guess U of I didn’t appreciate the extra web traffic.  

Try the attached NIST site which is also helpful.
http://webbook.nist.gov/chemistry/fluid/

RE: Mollier charts for natural gas (methane)

Know anyone with a copy of the GPSA Engineering data book, a copy of Perrys?  Both of those have Mollier charts for methane.

RE: Mollier charts for natural gas (methane)

(OP)
Thx TD2K (the cassette tape manufacturer?)

RE: Mollier charts for natural gas (methane)

MrPip:

The National Institute of Standards and Technology (NIST), an official branch of the US government, operates a Website at:

http://webbook.nist.gov/chemistry/fluid/

This website gives FREE thermodynamic data on: Thermophysical Properties of Fluid Systems.  Accurate thermophysical properties are available for 34 fluids – including Methane.  These data include the following:

Density
CP
Enthalpy
Internal energy
Viscosity
Joule-Thomson coefficient
Specific volume
CV
Entropy
Speed of Sound
Thermal conductivity
Surface tension (saturation curve only)

You can download the tabulated data and drop straight into Excel for Spreadsheet presentation or for use within a spreadsheet.

With this kind of accurate thermo data, I would advise anyone to use this free service rather than rely on a Mollier Diagram.  The Mollier is fine for teaching the thermo concepts; you can’t do better than the NIST database.

RE: Mollier charts for natural gas (methane)

(OP)
Montemayor,
Great - I'll give it a shot.
Many thx

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