Modeling the heat exchanges in a solar air heater with a cover partially transparent to infrared radiations

In this paper, the heat exchanges in a plastic cover solar air heater are analysed and an explicit expression of the temperature of the air flowing in that collector is developed as a function of the space coordinate in the flow direction and the time dependent solar intensity. Then the effect of various parameters such as the inlet air temperature, the distance between the absorber and the transparent cover and the air flow on the dynamic behaviour of the collector are studied.