VLEFlash Is the ideal tool for professionals in the natural gas & petroleum industry. You can now easily calculate fluid properties, and use the results to size equipment and find dew points in accordance with API 14.1 (June 2001)! Works great with a standard gas analysis. Available for download here!
Now you can use the results of the program to:
Find Dew Points from your gas analysis
Calculate the temperature drop across a control or relief valve
Find line heater duty
Size separators
Size lines and pumps
Estimate compressor horsepower
Calculate the vapour pressure of your LPG bullet or stock tank liquids
And Much More!
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Functions
For a given composition, VLEFlash calculates the flashes at required conditions, draws the phase envelope and vapour fraction lines, and gives the quick sizing evaluation of the stream facilities for the specified flow.
Flash Routines
Phase Envelope and Vapour Fraction Lines
Flow Calculation and Quick Sizing
Sequential Flash
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Flash Routines
VLEFlash is a Win32 application developed by Flow Phase Inc. for the prediction of thermodynamic and transport properties. And the drawing of phase envelope and vapour fraction lines of fluid mixture. It can be used for pure fluids or for mixtures of up to 20 components selected from the database of 215 components, mostly hydrocarbons. It can also be used for petroleum fractions that are characterized by an average boiling point and API gravity.
VLEFlash is capable of the following ten varieties of flash calculations:
Temperature - Pressure Flash
Bubble Point Pressure (fixed T)
Bubble Point Temperature (fixed P)
Dew Point Pressure (fixed T)
Dew Point Temperature (fixed P)
Temperature - Entropy Flash
Pressure - Enthalpy Flash
Temperature - Molar Density Flash
Pressure - Vapour Fraction Flash
Temperature - Vapour Fraction Flash
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Flash Returns
For each flash, VLEFlash returns the following results:
Phase equilibrium
Phase and mixture properties: VLEFlash also returns many fluid properties, such as:
Mole weight / Mole mass
Density
Compressibility Factor
Enthalpy
Entropy
Isobaric heat capacity
Heat Capacity Ratio (Cp/Cv)
Speed of Sound
Joule-Thomson Coefficient
Transport
Viscosity
Thermal Conductivity
Heating values at standard condition
Phase flow and quick sizing
Phase Envelope and Vapour Fraction Lines
The phase envelope and vapour fraction lines are calculated for the given composition and shown with the following available features for better observing:
The detail view of a specific area by zooming in and out of the rectangle
Showing in different units for temperature and pressure
Showing the temperature and pressure of the point by clicking it
Adding/removing vapour fraction lines by clicking the legend area.
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Friendly Features VLEFlash enhances user comfort in many ways, such as:
Context related online help
SI, Conventional and Customized unit selection and auto conversion for all data, results and even phase envelope
Sequential flash that allows you to string together the flashes in your process
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