The temperature of cavity-type solar absorbers with a circulating fluid
Abstract
A simple analytical expression is derived for the effective temperature of a cavity-type absorber of radiative energy when a heat transfer fluid is circulated through the cavity. The effective temperature is the magnitude which characterizes the radiative emission loss from the cavity aperture and which drives the absorbed energy into the heat transfer fluid. The expression can be used in rank-ordering various cavity design options and is not intended to supplant any detailed numerical calculations for the cavity temperature distribution.
- Publication:
-
ASME Journal of Heat Transfer
- Pub Date:
- November 1974
- Bibcode:
- 1974ATJHT..96..549A
- Keywords:
-
- Heat Transfer Coefficients;
- Recirculative Fluid Flow;
- Solar Energy Absorbers;
- Temperature Distribution;
- Cavities;
- Conductive Heat Transfer;
- Convective Heat Transfer;
- Diffuse Radiation;
- Energy Dissipation;
- Radiant Flux Density;
- Radiation Absorption;
- Radiative Heat Transfer;
- Solar Radiation;
- Wall Temperature;
- Energy Production and Conversion