Heat of Vaporization Considerations for Relief Systems Applications Newsletter

Heat of Vaporization Considerations for Relief Systems Applications Newsletter

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When designing pressure relief systems, a common scenario involves the calculation of vapor generation rates from liquids subjected to heating, internal heating, or fire exposure.

In this newsletter, you'll find an excerpt from a white paper by Georges Melhem, Ph.D., FAIChE, on the practices and the challenges of calculating the rate of vaporization in relief and flare system evaluation and design. He’ll cover:

  • Prevailing Practices
  • Thermodynamics of Vapor Generation
  • Single Component Vapor Relief Requirements
  • Single Component Heat of Vaporization
  • The Four Multicomponent Heats of Vaporization

Bonus!

This newsletter also includes a 2-minute video that shows the animation of one-dimensional (1D) fluid dynamics data for a liquid valve using Process Safety Office® SuperChems™ software. Simple design equations, such as those provided by the American Petroleum Institute, continue to be widely used. However, these simple equations require a value of the latent heat of vaporization which varies with composition for a liquid mixture as venting is occurring.

Have a great and safe day.

 

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