Determinação da pressão de vapor de espécies químicas utilizadas na indústria de alimentos utilizando a plataforma excel

Abstract

State equations play an important role in chemical and food engineering and a growing role in the balance of fluid phases and fluid mixtures. Originally, the state equations had underlying pure components. Because they were first mixed together, they were only used for mixtures of compounds and polar glassware. Industrial problems most often involve contact between the two phases or more in equilibrium. Consequently, the process of such processes is ideal for thermodynamic models and accurate to represent the balance between phases. The objective of this work was to implement a program to calculate the water vapor pressure in an electric power machine, using state-of-the-art technology. Peng-Robinson's EoS was selected because it was welcomed by area authors and compared with Antoine's equation to obtain optimum results of vapor pressure, benzoic acid, ethanol and acetic acid. With the study one can distinguish the use of Excel to develop a program as a quick and effective alternative to a resolution of cubic equations and efficient for calculation of vapor pressure, good accuracy.