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  1. waqasmanzoor

    Validation of Antisurge Valve of a Centrifugal Compressor using Dynamic Simulation in Aspen HYSYS

    Dear Mr. Ajay S. Satpute, Thank you very much for sharing the files and solving my problem :) God bless you :)
  2. waqasmanzoor

    Boiler superheaters

    Well in my view, an attemperator though solves the problem of controlling steam temperature, but it is this point where undissolved solids are also added to steam which cause impingement on steam transportation piping and other equipment consuming steam including steam turbines' rotor. We had a...
  3. waqasmanzoor

    Bottled nitrogen cooling due to JT effect

    PetroBob Yes dear. As you are reducing pressure from fairly high value, so it would be good to use 2 or more open loop pressure regulators in series. What is the size of nitrogen pipe? I think, you should provide heat tracing to the nitrogen gas cylinders, so that JT effect wouldn't...
  4. waqasmanzoor

    Amount of heat required to produce 50 psig in pipe with water in it

    Dear All, I have prepared a simulation in Aspen HYSYS to calculate the Temperature and Pressure of Water in a Externally Heated Tank with closed outlets. This is just an example calculation. However, it can be "tuned" for this case :) I have also prepared a small report that includes HYSYS...
  5. waqasmanzoor

    PRV resetting frequency

    Sorry, there is a typo in the last two lines and I'm unable to find an option to edit the post... :) Here's the corrected line.. --- it is generally said that if we have not VERIFIED the operation of safety instrumentation during start up or before start up then as per MURPHY's law then it...
  6. waqasmanzoor

    PRV resetting frequency

    As an operation person, I can say NO. However, you should grease the PSV "check nut" and perform overhauling of the PSVs from time to time. The PSV spring is usually not exposed to any "harsh" liquids, so the life of spring is very LONG generally. I am saying this owing to my operational...
  7. waqasmanzoor

    Validation of Antisurge Valve of a Centrifugal Compressor using Dynamic Simulation in Aspen HYSYS

    Dear All, I have to validate an Antisurge Valve of a centrifugal compressor using Dynamic Simulation in Aspen HYSYS. Does anyone have worked on a similar project? Also I have to specify initial tuning parameters for the Antisurge controller. Please advise specifically for Aspen HYSYS software...
  8. waqasmanzoor

    calculating amount of 60# steam

    By the way, 30 MMBTU/H seems to be a very big heat exchanger :) How much is the water flow rate?
  9. waqasmanzoor

    calculating amount of 60# steam

    JGP08 Dear, have you tried simulating the process in Aspen PLUS or Aspen HYSYS. Besides doing manual calculations (which you should do for better grasping of process engineering concepts), you can very easily (and swiftly) calculate the "LOST STEAM" by using the process simulators. First...
  10. waqasmanzoor

    Validation of Antisurge Valve of a Centrifugal Compressor using Dynamic Simulation in Aspen HYSYS

    I am new to these types of calculations. Therefore, I reverted to this forum like I did for many of the other process engineering calculations :)
  11. waqasmanzoor

    Validation of Antisurge Valve of a Centrifugal Compressor using Dynamic Simulation in Aspen HYSYS

    Dear All, I have to validate an Antisurge Valve of a centrifugal compressor using Dynamic Simulation in Aspen HYSYS. Does anyone have worked on a similar project? Also I have to specify initial tuning parameters for the Antisurge controller. Please advise specifically for Aspen HYSYS software...

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