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ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

Shuttle Heat Transfer in the Insulated Diesel

Get access (open in a dialog) DOI: 10.1615/IHTC8.380
pages 697-702

Sinopsis

Identification of heat loss pathways is essential for the successful design of insulated engines. To analyze heat flow paths in an operating engine, a finite-difference model is constructed of heat transfer between a cylinder and a moving piston, the upper surfaces of these bodies being heated and their lower surfaces cooled. It is shown that the cyclic motion of the piston results in a net transfer of heat across the piston, not calculable by static models. Insulation of the outer surface of the cylinder is shown to increase the importance of this loss mechanism. Estimates of the loss are given. By adapting methods established for the analysis of thermal regenerators, an approximate closed-form expression for the heat loss is obtained.