THE MEASUREMENT AND CALCULATION OF RADIATIVE HEAT-TRANSFER BETWEEN UNCOATED AND DOPED TIN OXIDE-COATED GLASS SURFACES

Accurate measurements are reported of the radiative heat transfer betw een parallel surfaces of uncoated and doped tin oxide coated glass. Th e infrared properties of the tin oxide coated glass are calculated by a novel approach by fitting a three parameter Drude model to reflectan ce measurements at a specified angle, and over a restricted range of w avelengths. Estimates of the radiative heat transfer between uncoated and coated glass surfaces are calculated from a consideration of the d irectional spectral emittances and the blackbody spectrum. This proced ure gives results that are in more consistent agreement with experimen tal measurements than results obtained by considering the hemispherica l total, or directional total emittances. Copyright (C) 1996 Elsevier Science Ltd.