Journal article
Radiative heat transfer in the lunar and mercurian surfaces
Icarus (New York, N.Y. 1962), Vol.11(2), pp.180-188
01/01/1969
Abstract
Observations of the Moon and Mercury have shown that a temperature-independent conductivity is not adequate to explain the results; the available laboratory experiments on heat flow in powdered solids lead to the same conclusion and point to the importance of radiative (photon) processes of heat transfer. In this paper we examine the validity of the usual approximate solutions to a simple model of heat transfer, including radiative transfer, in powders, by comparing them with an exact numerical solution. We find that the approximate solutions can, under some circumstances, adequavely described the planetary observations provided cognizance is taken of the fact that emission is a volume rather than surface effect; neglect of volume emission may have caused errors of as much as 20°K in the interpretation of lunar eclipse observations. We also find that the usual approximate solutions can give very misleading results when applied to those laboratory measurments of the thermal properties of powders which involve radiation from one surface of the powder.
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Details
- Title
- Radiative heat transfer in the lunar and mercurian surfaces
- Creators
- Juris Ulrichs - Cornell UniversityMalcolm J. Campbell - Ithaca College
- Publication Details
- Icarus (New York, N.Y. 1962), Vol.11(2), pp.180-188
- Academic Unit
- Laboratory for Atmospheric Research
- Publisher
- Elsevier Inc
- Number of pages
- 9
- Identifiers
- 99901320138601842
- Language
- English
- Resource Type
- Journal article