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Recent content by chemebabak

  1. chemebabak

    HYSYS Depressurization

    Depressurization within a vessel results in adiabatic cooling. Lowered temperature (even negative) is expected. At the outlet of a valve, the gas could either warm or cool, depending on the Joule-Thompson coefficient. These are both described in most textbooks about thermodynamics. As a...
  2. chemebabak

    How to reverse convert an executable file to excel file?

    cowski, that did not work. The error message was, "Excel cannot open the file 'filename.xlsm' because the file format or file extension is not valid."
  3. chemebabak

    How to reverse convert an executable file to excel file?

    IRstuff, the excel file contains VBA code and I do not know what software was used to convert it. Jim, no this is not a self-executing zip file.
  4. chemebabak

    How to reverse convert an executable file to excel file?

    How can I reverse convert an executable file to excel file? That is, this exe file was previously an xlsx converted to exe. How do I reverse it to xlsx?
  5. chemebabak

    Printing in Excel

    LonnieP, It seems that you are new to Excel VBA programming, so the best tip is to use the "Record Macro" function found in the Developer menu or Developer tab. Click "Record Macro", change the color of a cell, print, insert a row, copy and paste, or any other activity and then click "Stop...
  6. chemebabak

    Excel VB macro safety?

    Here is a good tip: Set your Macro Security settings to "Disable all macros with notification". For unknown files, open the VB editor and review all the code. If there is something you do not understand or looks malicious then simply close the file. If it looks fine then accept the security...
  7. chemebabak

    Switching Industries

    http://eng-tips.com/threadminder.cfm?pid=731 Post this question in this forum...
  8. chemebabak

    Career Suggestion

    http://eng-tips.com/threadminder.cfm?pid=731 Post this question in this forum...
  9. chemebabak

    Erosional velocity and liquid velocity

    MESSADAA, I would consider both. That is, pumped liquids are generally designed for a range of 5-10 ft/s. Also, I would not design to exceed erosional velocity [v = c / sqrt(density) ]; where v is in ft/s and density in lb/ft3. The question is what is the value of c. Some fluids require 150...
  10. chemebabak

    CAE Company Start-up

    Our company employs one drafter, one electrical designer and two civil designers. If the drafter and designers are not able to complete some drawings we would send them to a company with drafting labor in Vietnam. This contractor charged us $35/hr and we billed the client $60/hr. I was never...
  11. chemebabak

    Natural Gas Liquid Heater Nozzle Configuration

    Boiling fluids should always go up and condensing fluids down. As a chemical engineer, we do not specify the direction of flow on the data sheet. A mechanical engineer using HTRI or HX vendor would recommend the arrangement. We would just verify. With respect to vertical baffles on the...
  12. chemebabak

    Calculate composition of gas mixture

    http://www.eng-tips.com/market.cfm Students are not allowed to post homework problems in the Eng-Tips forums for the purpose of getting answers to their homework. This is considered cheating.
  13. chemebabak

    2 problems

    BigInch, The answer to your first question is that the code is not within a module of the project, but within the userform itself. It does need to call Userform1_Click because the userform is itself the only user form. For the second question, Please put the entire code so that I could more...
  14. chemebabak

    Bucket Location in Liquid- Liquid Separator

    10815L, A sketch would be very helpful to determine a good reply to your question. That is, will the water be pumped with a minimum flow return? Is it a horizontal or vertical vessel? Is there a weir? Will the oil exit the top or bottom? ~chemebabak
  15. chemebabak

    Career change - Civil / Environmental to Chemical-Biological / Process

    Consider posting this topic in this forum: http://eng-tips.com/threadminder.cfm?pid=731
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