Monday, October 22, 2012

Current Job Openings at Posco E&C, Gurgaon (Oct-Nov,2012)

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Please find below mention requirements. There are many types of vacancies available in Posco, Gurgaon currently. You can find in detail in below given table. To apply for given jobs, you can find email address given in the end of article.

Sunday, October 14, 2012

Pipe Reinforcement Calculation as Per ASME B31.1

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This spreadsheet is about calculation on Pipe reinforcement of:


Pressure Design Straight Pipe (Run Pipe)

  • STRAIGHT PIPE THICKNESS UNDER INTERNAL PRESSURE (tm) , mm.
Formula used are: 

tm =[(PDo)/2(SE+PY)]+A  and   tm =(Pd+2SEA+2YPA)/2(SE+PY-P)

where:

Wednesday, October 10, 2012

Thiele Geddes Multi-Component Distillation Spreadsheet

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Multi-Component Distillation Calculation
Thiele-Geddes Method with Theta Convergence


The VBA program in the attached spreadsheet performs rigorous tray-by-tray calculations for multi-component distillation by the Thiele-Geddes method with the theta convergence technique proposed by Holland. The technique involves material balance performed from the top of the column including the condenser to the feed tray and from the re-boiler at the bottom to the feed tray.

Monday, October 1, 2012

Bubble Point and Dew Point Calculations

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The bubble point of a system is the temperature at which a liquid mixture begins to vaporize.  The dew point is the temperature at which liquid begins to condense out of the vapor. If there is enough volume in the fluid, the bulk fluid concentration will remain unchanged after the first small bubble or drop of liquid is formed.  This calculation is important for vapor liquid equilibrium processes such as distillation, adsorption and stripping. The program uses empirical data of vapor liquid equilibrium as a function of temperature and iteratively finds temperature with the Newton Raphson method.  There is also a version using the Excel goal seek to demonstrate a easier way to program this.

 

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