CRITICAL RADIUS FOR RADIAL HEAT CONDUCTION: A NECESSARY CRITERION BUT NOT ALWAYS SUFFICIENT

M. R. Kulkarni*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Use of the critical radius for radial heat conduction in ther mal insulation systems has been widely reported in the litera ture. When it is desirable to increase heat dissipation, this critical radius can be used in a definitive manner to maximize the heat dissipation. However, if it is desirable to decrease heat gain or heat loss, the critical radius only serves as a nec essary condition, but it is not sufficient. To address design of such thermal systems, a new crossover radius is introduced. A crossover radius is a radius greater than the critical radius and is defined such that the heat transfer with the correspond ing amount of insulating material is equal to that of the bare thermal system. Both cylindncal and spherical systems are considered.

Original languageEnglish (US)
Title of host publicationHeat Transfer
Subtitle of host publicationVolume 4
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages369-382
Number of pages14
ISBN (Electronic)9780791826690
DOIs
StatePublished - 1999
Externally publishedYes
EventASME 1999 International Mechanical Engineering Congress and Exposition, IMECE 1999 - Nashville, United States
Duration: Nov 14 1999Nov 19 1999

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume1999-R

Conference

ConferenceASME 1999 International Mechanical Engineering Congress and Exposition, IMECE 1999
Country/TerritoryUnited States
CityNashville
Period11/14/9911/19/99

ASJC Scopus subject areas

  • Mechanical Engineering

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