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This paper presents the experimental results of a research project conducted to determine the impact of surface characteristics on radiant panel output. The hemispherical and angular emittance and radiant panel output were measured for various modern building materials. The surfaces were found to have uniformly high hemispherical emittances and could be considered diffuse emitters. An office-sized environmental chamber was used to test radiant ceiling, floor, and wall panels under both natural and forced convection conditions. The results of these experiments showed that for the surfaces and conditions tested, surface texture did not have a significant impact on the rate of heat transfer from the radiant panels.

Units: Dual

Citation: Symposium, ASHRAE Transactions, 1998, Vol 104, pt. 1A, San Francisco