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ISSN Online: 2377-424X

ISBN Print: 0-89116-130-9

International Heat Transfer Conference 6
August, 7-11, 1978, Toronto, Canada

RADIATIVE AND MOLECULAR HEAT TRANSFER IN HIGH−VACUUM SYSTEMS

Get access (open in a dialog) DOI: 10.1615/IHTC6.4250
pages 379-384

Sinopsis

Presented is a solution for a number of problems on calculation of composite radiative-molecular heat exchange in flat, cylindrical, and spherical systems with perforated screens in conditions of free-molecular flow. Given is an analysis of the influence of certain values, as screen perforation degree, disposition of the screen in the system, absorptivity and emissivity, accomodation coefficients of heat exchanging surfaces as well as their temperature level and pressure on the net heat transfer in studied systems. Showed is a role of separate mechanisms of heat transfer, depending on the change of aforesaid factors. Analyzed is also the influence of diffuse and specular components of radiative and molecular properties of heat exchanging surfaces on the heat flux and its components.