Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

Register Log in
  • Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. rh.ryan88

    ISA Control valve sizing equations

    Hi Danschwind. I interpreted it is kg/mol. I could be wrong but screenshot attached. https://files.engineering.com/getfile.aspx?folder=f749bde2-c560-419d-8a95-3df74e010381&file=ISA_symbols.JPG
  2. rh.ryan88

    ISA Control valve sizing equations

    Thanks Danschwind. I colleague here also corrected me. ISA asks for Kg/mol in Symbols table so I convert to 0.004.
  3. rh.ryan88

    ISA Control valve sizing equations

    Ive double and triple checked everything. My values are as follows: Fluid: Helium Inlet pressure: 40 Bara Outlet pressure: 6 Bara Mass flow rate: 234 Kg/h Inlet temp: 60K Fluid density @ inlet: 29.614 Kg/m3 Ratio of specific heat: 1.6669 Molecular mass: 0.004002 Kg/mole Compressibility factor...
  4. rh.ryan88

    ISA Control valve sizing equations

    Hi All. I am busy using the ISA equations for sizing a control valve. I know my mass flow rate and I have my density, compressibility factor and molecular mass values. However, when I use Eq. 9 and 10, I get very different results. Cv 0.39 and Cv 12.38 for each equation respectively. I have...

Part and Inventory Search

Back
Top Bottom