EXACT methods for thermodynamic calculations of high temperature combustion processes at equilibrium are very involved and time‐consuming because of the increasing influence of dissociation with increasing temperatures above 1800dcg. K. Many simplified methods have been proposed, but most of them are still rather complicated or approximate and are cither suitable for a special type of application only or based on assumptions valid within conditional limits. From the research engineer's point of view Mollier‐charts (total heat—entropy diagrams) would be most useful, but for general use too many charts would be required. For every possible reaction as many charts as there are mixture ratios have to be considered. Professor Lutz of Braunschweig proposed in 1947 a new type of enthalpy‐chart, which enables a wide range of applications to be covered by a reasonable number of charts. A number of such charts have been constructed by the Ministry of Supply.
Reichert, I.H. (1953), "High Temperature Combustion: A New Type of Mollier‐chart for High Temperature Gas Mixtures at Equilibrium", Aircraft Engineering and Aerospace Technology, Vol. 25 No. 7, pp. 198-212. https://doi.org/10.1108/eb032311
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