Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7935417 | Solar Energy | 2018 | 7 Pages |
Abstract
The research had the following objectives: to assess the efficiency of a collector and the reliability of the applied parameters such as the outlet air velocity, temperature increase depending on the intensity of solar irradiance, the influence of ambient temperature on the collector's efficiency and heat loss. The solar-air collector (1180â¯mmâ¯Ãâ¯610â¯mmâ¯Ãâ¯77â¯mm (height, width, depth)) was installed vertically on a South-faced wall and exposed to solar irradiance. The following parameters were measured in the course of study: intensity of solar irradiance falling on a vertical surface (the collector was installed in a vertical position according with the producer design), temperature and velocity of air flowing into the collector as well as the temperature and velocity of air flowing out of the device. The study indicates that the collector worked efficiently at an irradiance value of just 100â¯W·mâ2 and heated up the flowing air by about 5â¯Â°C. This temperature increased together with increasing irradiance and reached the value of 20â¯Â°C at the irradiance value of 800â¯W·mâ2. The analysis of the collector's efficiency showed that during its work (proper temperature and irradiance) the efficiency remained at a satisfactory level from 42 to 46%.
Keywords
Related Topics
Physical Sciences and Engineering
Energy
Renewable Energy, Sustainability and the Environment
Authors
Jacek LeÅny, Monika Panfil, Marek Urbaniak,