Exergy Analysis Preliminaries

L = liquid molar flow rate V = vapor molar flow rate x = liquid mole fraction y = vapor mole fraction 

In general, a flow-sheeting program can give the total entropy and enthalpy of the stream, in which case the physical and mixing exergies can be computed as 

The computation of the chemical exergy of the various streams is achieved by using documented values of the chemical exergy [2] of the chemical species 

Thermal,ChemicalandMetallurgical Processes, Hemisphere Publishing Corporation, New York, 1988. 

Calculated using group contribution methods and accounting for the crystallinity of PE. 

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Lopez, I., et al., 2014. Effect of the use of olive—pomace oil biodiesel/diesel fuel blends in a compression ignition engine preliminary exergy analysis. Energy Conversion and Management 85, 227—233. Available at http //www.sciencedirect.com/science/article/pii/ S0196890414005032 (accessed 14.02.15.). 

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