The computer model for the wiped film evaporators was completed in the academic year 1994-95 for Simulation Sciences which is a leading company in process simulator designed for the gas processing, oil refining, petrochemical, chemicals, and synthetic fuels industries. The Technical Liaison was Simulation Sciences' Software Engineer, Bruce Cathcart. Simulation Sciences Inc. the development of a program that will aide in the design and performance analysis of these air-coolers. This simulator is based on incremental analysis in which energy and momentum transfer calculations are applied to approximately 1200 increments. The solution of this system results in the temperature and pressure profiles along the tubes in the exchanger.
Incremental analysis enables to handle air side and tube side flow maldistribution.
In addition, this model can account for tube side condensation and two-phase flow and varioations in thermodynamic and transport properties. The team was assisted by the technical liaisons from Simulation Sciences Inc, Software Engineers Bruce Cathcart and Amar S. Wanni. Such components are often separated by their differences in solubility in relation to a suitably chosen solvent. The design of the liquid extractor necessitates an initial screening of various solvents. A common design technique for a three component system uses graphical techniques on a triangular diagram to solve the material balances and liquid-liquid equilibrium relations.