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  • Users: choack
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  1. choack

    Gas Turbine Drain Pressure

    Hi, I just want to ask if there is a chance to have a pressurized gas exiting drain lines of gas turbines? I'm suspecting turbine casing and the enclosure skid drains. Christopher Kenneth Choa
  2. choack

    Compressor Coupling Hubs

    Just want to ask typically how much coupling hubs a compressor have? A typical gas turbine rated about 20+MW. Nany Thanks. Christopher Kenneth Choa
  3. choack

    Shell Tellus ISO 360 and Aeroshell ISO 560

    I would like to ask where to find molecular weights and latent heat of vaporization of complex lube oils (Shell Tellus ISO 360 and Aeroshell ISO 560). I would also like to ask if one can simulate them in HYSYS/UNISIM? Christopher Kenneth Choa
  4. choack

    DP Transmitter

    Can DP transmitter read interface level? Christopher Kenneth Choa
  5. choack

    HYSYS Simulation

    HI, I done simulation with ELECTROLYTE NRTL, with the electrolytes like H+, OH- and others defined as composition. I am just wondering why in my simulation run, none of them have values on the composition workbook. Are they just intermittent species which HYSYS consider them non existing when...
  6. choack

    HYSYS Simulation

    Hi, I'm definitely new to HYSYS and other process simulation tools. I just have a question in HYSYS.. If I do want a sour water stripper with a caustic injection on it (this will entails having an equilibriun reaction between the NaOh and other components inside the stripper), should I still...
  7. choack

    ADIP Process Meaning

    What is the meaning of ADIP? I'm struggling to find a equivalent meaning on the search engine. Christopher Kenneth Choa
  8. choack

    Friction in Exhaust Stack

    Exhaust stack have friction chart like the one I attached. How about for higher temperature? If there is not chart available, what equation should be used? Christopher Kenneth Choa
  9. choack

    Siphon Breaker

    Hi, I do want to ask for assistance if the design can work. I have a lube oil tank with the cooler higher about 10m. During trip/shutdown, I do want to retain the lube oil inside the cooler and not rundown to the tank. I'm attaching a siphon breaker with restriction orifice for this purpose. I...
  10. choack

    Isothermal Flow for Compressible Gas in Vertical Pipes

    Hi, I would like to ask for the integrated form of the equation of isothermal compressible flow in vertical or with angle pipes (with reference). I saw an integrated form of isothermal compressible for horizontal pipes in equation 6.49 in the 7th edition of McCabe and Smith...
  11. choack

    Choked Flow in Orifice

    If I have an orifice with a size corresponding to a fixed beta value... and I have a two inch line. When using the choked flow formula found in wikipedia... why is it the discharge area (2 inch area) was making the 'choking' and not the orifice itself? Christopher Kenneth Choa
  12. choack

    In McCabe and Smith, the Orifice Si

    In McCabe and Smith, the Orifice Sizing equation for mass flowrate for compressible fluid is only applicable to fluids having pressure ratio above 0.53. (page 232, 7th edition). Can someone advise what equation to use for 0.53 and below? Thanks.
  13. choack

    Any Optimization Tool that is free in the net?

    Other than Lingo??
  14. choack

    Joule Thomson Effect

    Is joule thomson cooling effect much effective (more heat is dissipated) if cooler feed is applied?
  15. choack

    What is the meaning of "Liquid from Quite Zone"

    Liquid from Quite Zone This is sizing of vessel.
  16. choack

    What do we mean by rewheel?

    Rewheel datasheet?
  17. choack

    Best book for plant design

    What books can you recommend me for plant design?
  18. choack

    Difference between ASPEN+ and UNISIM

    Hello, What basically is the difference of ASPEN and UNISIM? Which of the two is better?
  19. choack

    Throughput Meaning

    What is the meaning of throughput?

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