A mathematical and experimental model for rooftop solar collector under different ambient conditions and different geometrical parameters. Steady state heat transfer equations were set to calculate the temperatures at the absorbing wall, the glass cover and the air between them. The model was converted to a FORTRAN computer program and solved by iteration matrix procedure. The experimental study of solar collector was built and set up on the roof of the Mechanical Engineering Department University of Technology in Baghdad city. The results revealed that for 2 m height, 1 m width and different air gap depths (0.1, 0.15, and 0.2 m). The air volume flow rate was (100 to 280) m3/h was obtained under solar intensity varies from 200 to 800 W/m2 and inclination angle 60°. The model developed is general and it can be easily customized to describe different of solar chimney arrangements. A good agreement showed between the mathematical and experimental results.

A mathematical and experimental model for rooftop solar collector under different ambient conditions and different geometrical parameters. Steady state heat transfer equations were set to calculate the temperatures at the absorbing wall, the glass cover and the air between them. The model was co...