Heat Transfer From Combustion Gases to a Single Row of Closely Spaced Tubes in a Swirl Crossflow Stirling Engine Heater

[+] Author and Article Information
C. P. Bankston, L. H. Back

Energy and Materials Research Section, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, Calif. 91109

J. Heat Transfer 104(1), 55-61 (Feb 01, 1982) (7 pages) doi:10.1115/1.3245068 History: Online October 20, 2009


This paper describes an experimental program to determine the heat-transfer characteristics of a combustor and heat-exchanger system in a hybrid solar receiver which utilizes a Stirling engine. The system consists of a swirl combustor with a crossflow heat exchanger composed of a single row of 48 closely spaced curved tubes. In the present study, heat-transfer characteristics of the combustor/heat-exchanger system without a Stirling engine have been studied over a range of operating conditions and output levels using water as the working fluid. Non-dimensional heat-transfer coefficients based on total heat transfer have been obtained and are compared with available literature data. The results show significantly enhanced heat transfer for the present geometry and test conditions. Also, heat transfer along the length of the tubes is found to vary, the effect depending upon test condition.

Copyright © 1982 by ASME
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