Calculation of flat-plate collector loss coefficients
Abstract
A means of calculating U-L, the collector overall energy loss coefficient, is described which relates U-L to the sum of three energy loss rates: Q-R, the instantaneous rate of energy transferred to the transparent cover above the absorber plate by the processes of radiation and convection; Q-B, the instantaneous rate of energy conducted through the insulation below the plate; and Q-E, the instantaneous rate of energy lost from the plate due to edge effects. The first of these factors is the most important; equations for determining values of it are presented.
- Publication:
-
Solar Energy
- Pub Date:
- April 1975
- DOI:
- 10.1016/0038-092X(75)90020-1
- Bibcode:
- 1975SoEn...17...79K
- Keywords:
-
- Energy Dissipation;
- Energy Transfer;
- Flat Plates;
- Mathematical Models;
- Solar Collectors;
- Convective Heat Transfer;
- Solar Energy Absorbers;
- Solar Radiation;
- Temperature Distribution;
- Thermal Conductivity;
- Thermal Emission