Power Cycle Components/Processes Ideal vs Real Operation AnalysisAuthor: Gordan Feric
The power cycle components/processes (compression, combustion and expansion) are presented in this course material.In the presented power cycle components/processes analysis, air is used as the working fluid.
For compression and expansion, the technical performance of mentioned power cycle components/processes for ideal and real operation is presented with a given relationship between pressure and temperature and compression and expansion efficiency.
Complete combustion at constant pressure with and without heat loss is presented. Six different fuels (carbon, hydrogen, sulfur, coal, oil and gas) react with air as the oxidant at different stoichiometry values (stoichiometry => 1) and oxidant inlet temperature values.
Reactants and combustion products specific enthalpy values change with an increase in the temperature and such enthalpy values are presented in a plot where one can notice the flame temperature definition. Physical properties of basic combustion reactants and products species are presented in an enthalpy vs temperature plot.
The combustion technical performance at stoichiometry => 1 conditions is presented knowing the specific enthalpy values for combustion reactants and products, given as a function of temperature.Combustion products composition on both weight and mole basis is given in tabular form and plotted in a few figures. Also, flame temperature, oxidant to fuel ratio and fuel higher heating value (HHV) are presented in tabular form and plotted in a few figures. The provided output data and plots allow one to determine the major combustion performance laws and trends.
In this course material, the student gets familiar with the power cycle components/processes, their T - s and h - T diagrams, ideal and real operation and major performance trends.
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