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Development of a Rotating Heat Regenerator for Automotive Gas Turbine
Published May 14, 1992 by Societe des Ingenieurs de l'Automobile in France
An automotive gas turbine must be simple and must work with low mass air flow. In such conditions the pressure ratio used is relatively low. In order to obtain high efficiency, the air must be heated by a neat exchange by the exhaust gases before it enters into the combustion chamber.
It is well known that the most efficient heat recovery is achieved in a minimum amount of space in a regenerator.
The study of this kind of heat exchanger has been performed in such a way that the following problems have been solved: calculation of the matrix dimensions to reach the efficiency goals, choice of the matrix ducts geometry, design of the seals, choice of the coatings, and design of the driving system.
The study is now sufficiently advanced in order to fabricate and test a prototype.