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  • Users: kkav
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  1. kkav

    3 pass helical coil heater calculation

    Hi Latexman, You can see picture of this type of heater in the attached file. Thanks kkav http://files.engineering.com/getfile.aspx?folder=8dba7d26-c55e-4aae-87a8-f65d150b0fec&file=3-pass-animation.gif
  2. kkav

    3 pass helical coil heater calculation

    Hi Latexman, You can see pictures of this type of heaters in "WWW.HEATEC.COM". Thanks kkav
  3. kkav

    3 pass helical coil heater calculation

    Hi every body, Does any body know design criteria for 3 pass helical coil heaters? The important issues may be: 1- Inner coil diameter 2- Distance between inner coil and outer coil 3- distance between outer coil and the heater wall Any document(s) or guideline(s) for calculation of this type of...
  4. kkav

    Determine NPSHa of centrifugal pump

    Hi Everybody, There is a pump which transfer liquid from bottom of a distillation tower. In order to specify NPSHa,it is needed to determine liquid head (level) on the bottom of tower. For this, there are some options as below: 1)Normal liquid level (50% on level transmitter) 2)Liquid level on...
  5. kkav

    Stabilization tank on sour water units feed

    Hi Everybody, In many references, a stabilization tank has been offered on the feed of sour water stripper units. The proposed residence time for such tank is one day to three days. How is this residence time being calculated? Does any body know the criteria for calculating the sour water...
  6. kkav

    Storage Tank Residence Time Calculation

    Hi everybody, A storage tank for crude oil-water separation should be designed. Does anybody know how? Any guidline for sizing this storage tank(including equations and sample calculation) will be appricaited? Thanks
  7. kkav

    Butterfly Valve in Thermosiphon Reboiler Inlet Lline

    Hi Everybody, A butterfly valve is already used in thermosiphon reboilers inlet line . Does anybody know the reason(s)?
  8. kkav

    Small Scale Naphtha Hydrotreating and Naphtha Reforming Units

    Hi, everybody I need some information about Naphtha Hydrotreating and Naphtha Reforming in a small scale for instance 300-700 ton/day. Any information such as costs, method of reforming (CCR or CRU), yield, units manufacturer, second hand units for sale, operating conditions, feed and products...
  9. kkav

    Pressure safety (relief) valve design (B.D. Case)

    Hi every Body, For design of a PSV, four cases are always considered: 1)Fire, 2)Power Failure (P.F.), 3)Cooling Water Failure (C.W.F.) and 4)Blow Down (B.D.).I'm realised on the cases of Fire, P.F. and C.W.F. But I don't know what B.D. does mean in P.S.V. design? Would you please explain?

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