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The nature of wall temperature distributions in regions of deteriorated heat transfer

โœ Scribed by A. Watson

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
172 KB
Volume
18
Category
Article
ISSN
0011-2275

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โœฆ Synopsis

This note concerns the difficulty of fitting heat transfer correlations to data in deteriorated forced convective flows of supercritical pressure fluids. Experimental data suggests that the heat transfer coefficient depends inversely upon wall to bulk temperature difference, causing the wall temperature to become very sensitive to secondary features such as axial conduction in the test section wall. Under certain conditions the wall temperature level cannot be uniquely determined by a correlation. It is suggested that by noting the transient response of wall temperature to step changes in heat flux the influence of axial conduction may be deduced.

๐Ÿ“œ SIMILAR VOLUMES

Nature of wall heat transfer coefficient
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โœ Thomas J. Hanrattry ๐Ÿ“‚ Article ๐Ÿ“… 1954 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 454 KB

A mechanism of heat transfer from a tube wall to fluid flowing in a packed bed is proposed whereby : (1) a mass of fluid is thrown against the wall ; (2) the fluid at the wall assumes the wall temperature and transfer occurs inward ; (3) this mass of fluid moves away from the wall and is replaced by