Results 1 to 2 of 2
  1. 06-11-2007, 02:39 AM #1
    bornehatred's Avatar
    bornehatred
    bornehatred is offline Registered User Hey, I am new to : RE
    Join Date
    Mar 2007
    Location
    Malaysia
    Posts
    5
    Rep Power
    0

    Helmholtz Free Energy Eq of State for R134a



    Hi guys,
    i already got the equation of state for R134a. However, i do not know how to calculate enthalpy and entropy using it. I'm not a very fond student of math though. So, can anyone please show me some sample using the equation?i attached the equation since i don't know how to post it here with all those symbols and stuff.please anyone, i really need this A.S.A.P
    Attached Files Attached Files


  2. 06-11-2007, 04:02 PM #2
    Lord Kelvin's Avatar
    Lord Kelvin
    Lord Kelvin is offline rookie poster
    Join Date
    Nov 2007
    Location
    Argentina
    Age
    71
    Posts
    12
    Rep Power
    0

    Smile Re: Helmholtz Free Energy Eq of State for R134a

    Try at Du Pont Web site for R - 134 A thermodinamic properties, I found a chart where all that coeficients on the Ecuation of state are used,dont be afraid is just a sumatory.

    Luck!
« Previous Thread | Next Thread »

Similar Threads

  1. Energy Conservation
    By US Iceman in forum Technical Speculations
    Replies: 20
    Last Post: 20-07-2010, 10:52 AM
  2. frostles heat pump
    By Lc_shi in forum New Technologies
    Replies: 27
    Last Post: 31-03-2008, 07:53 AM
  3. Thermal Efficiency of Refrigeration System
    By hussain316 in forum Refrigeration Books
    Replies: 5
    Last Post: 31-07-2007, 08:59 PM
  4. Energy Plus Software - Free
    By Peter_1 in forum Tools and Calculators
    Replies: 0
    Last Post: 18-10-2004, 06:29 AM
  5. Energy PLus software FREE
    By Peter_1 in forum Tools and Calculators
    Replies: 0
    Last Post: 19-04-2004, 07:14 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules