Convective effects in 'slat collectors'
Abstract
This experimental investigation was carried out to validate previous numerical work done on natural convection in inclined cells with finite side walls. Vacuum techniques were employed in this investigation. Effects of aspect ratio, inclination angle, wall boundary conditions and Rayleigh number on the heat transfer were studied. The aspect ratios used were 1/3, 1/2 and 1. The inclination angles ranged from 0 deg to 90 deg. Two values of Rk (giving two different wall boundary conditions) were selected using glass and perspex materials for the lateral walls. The Rayleigh number ranged from 0 to about 100,000. The overall accuracy of the experimental technique can be judged from the experimental errors in the Nusselt number (about 7%) and the Rayleigh number (about 5.5%).
- Publication:
-
Sun: Mankind's Future Source of Energy
- Pub Date:
- 1978
- Bibcode:
- 1978smfs.conf..965K
- Keywords:
-
- Convective Heat Transfer;
- Flat Plates;
- Free Convection;
- Solar Collectors;
- Solar Energy Absorbers;
- Aspect Ratio;
- Boundary Conditions;
- Boundary Value Problems;
- Energy Technology;
- Honeycomb Structures;
- Nusselt Number;
- Rayleigh Number;
- Energy Production and Conversion