International Journal of Refrigeration | VOL. 73
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Fluid-phase-equilibrium prediction of fluorocompound-containing binary systems with the predictive E -PPR78 model

Publication Date Jan 1, 2017

Abstract

In order to reduce the overall emissions of greenhouse gases and to be in compliance with the current environmental regulations, a new class of refrigerants has appeared. Such refrigerants are generally multi-component systems that contain a fluorocompound mixed with CO2 and/or an alkane. In order to design processes involving such blends or to implement a product-design approach aimed at identifying new refrigerant mixtures, an equation of state (EoS) able to predict the properties of fluorocompound-containing systems is required. In order to reach this goal, it was decided in this study to add six fluorinated groups to the Enhanced-PPR78 model which combines the Peng–Robinson EoS and a group contribution method aimed at estimating the binary interaction parameters, kij(T), involved in Van der Waals one-fluid mixing rules.

Concepts
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PPR78 Model
Class Of Refrigerants
Refrigerant Mixtures
Emissions Of Greenhouse Gases
Equation Of State
Emissions Of Gases
Current Regulations
Peng Robinson Equation Of State
One-fluid Mixing Rules
Robinson Equation Of State

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