Common properties of hydrocarbon combustion products and Brayton cycle

Abstract

The energy released in the process of combustion of substances is the source of thermal energy in cycles of heat engines, while the combustion products are working media in the expansion processes.  The composition of all combustibles is their common property - they are all hydrocarbons, i.e. their molecules consist of carbon and hydrogen atoms. This article will examine only the products of stoichiometric combustion – the oxidation of fuel components in the environment of atmospheric air. Products of combustion are mixtures of oxides of the constituent elements and the basic element of air - nitrogen. It is the combustion products that determine the expansion processes in the most common cycle of power plant operation- the Brayton cycle. The possibility of accurate calculation of combustion products’ properties in a fairly broad range of temperatures is required. One of the methods of calculating the properties of the major constituents of hydrocarbon stoichiometric combustion is presented in the paper.

About the authors

E. L. Mikheenkov

Samara State Aerospace University

Author for correspondence.
Email: Eugene.mikh@gmail.com

Candidate of Science (Engineering)

Associate Professor of the Department of Heat Engineering and Heat Engines

Russian Federation

References

  1. GOST R 8.662-2009. Natural gas. Thermodynamic properties of the gas fazy. Metody calculation for the purposes of determining the transport and distribution of gas on the basis of the fundamental equation of state AGA8. ISO 20765-1:2005. Moscow: Standartinform, 2010. 38 p. (In Russ.)
  2. Gurvich L.V., Veyts I.V., Medvedev V.A. et al. Termodinamicheskie svoystva individual'nykh veshchestv. Spravochnoe izdanie v chetyrekh tomakh. T. 1, kn. 1 [Thermodynamic properties of individual substances. Reference book in four volumes.V. 1, Book 1]. Moscow: Nauka Publ., 1978. 497 р.

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