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Recent content by herman74

  1. herman74

    Multi Hole Orifice Pressure Drop

    Many thanks casflo I've been away from work for the christmas holidays till yesterday. Now I will try to find if there are some useful informations in the Idelchick's handbook, and I will search for the article in the POWER magazine, but I don't now where to find this mag, if you have a pdf of...
  2. herman74

    Multi Hole Orifice Pressure Drop

    Many thanks to all, after a very wide search on internet I found that Zapster is right: “Handbook of Hydraulic Resistance” third edition, by I.E. Idelchik could help me on this issue. Now my problem is to have this book, but in some ways I will be able to read it, I've contacted my university...
  3. herman74

    Multi Hole Orifice Pressure Drop

    Hi Katmar Thanks a lot for your advice. I've searched around, but I wasn't able to find any information about the William B Hooper method, can you give me some advice where to find a paper that can explain this proceeding. I have no access to Chemical Engineering, November 7 1988, pgs 89-92...
  4. herman74

    Multi Hole Orifice Pressure Drop

    I'm not able to find the graph that Latexman tell, but I have the seventh edition and in the section 5 there is "Heat & Mass transfer" In the part 6 there is "Fluid & Particle Dynamics" and at 6-21 there is somethings about the orifice, but nothing about this graph. However I read that the...
  5. herman74

    Multi Hole Orifice Pressure Drop

    First of all thanks for for yours quick replies and second sorry because I miss to give you an information. During a first verification of these orifices we found that the maximum allowable flow through the orifice, in our process configuration, was very low. So we ask our supplier to check this...
  6. herman74

    Multi Hole Orifice Pressure Drop

    Hi I have an orifice on a sea water discharge line in order to reduce the pressure to the one present in a downstream common discharge. Since the pressure drop and the flow rate are quite high (3 bar; 12500 m3/h), our supplier have provided us a DN 1400 orifice, 40 mm thickness, with 253 holes...

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