Abstract: This research aims to investigate the temperature distribution and the effect of different parameters on the solar air collector performance. The parameters studied in the present research are the collector tilt angle (β), the collector Height (H) and the solar radiation Intensity (I). The flat plate solar air collector has been built and tested in Al-Nahrain University, Baghdad. The dimensions of the fabricated solar air collector are 120, 100 and 20 cm in length, width and height, respectively. The test procedures were carried out by different instruments for the tilt angles of 30°, 45°, 60° and 75° and the collector height of 10 and 20 cm. Analysis was implemented for the heat gain and thermal efficiency of the solar air heater. The obtained results show the maximum efficiency of 54% occurs for the tilt angle of 30° and height of 10 cm while the maximum efficiency of 52% occurs for the tilt angle of 45° and height of 20 cm. It is found that the present solar collector supplies hot air up to 62°C for the height of 10 cm and the tilt angle of 30°. Generally, the results tend decrease when the tilt angles increase from 30°-75° and the collector height increase from 10-20 cm.
Mohammed A. Neama and Ayad T. Mustafa, 2019. Experimental Investigation and Evaluation of Inclined Solar Air Heater. Journal of Engineering and Applied Sciences, 14: 10291-10297.