We have considered the general case of a collector with four reflectors. An analytical model is developed for study of the effect of an individual reflector on the collector. Reflectors R-1, R-2, R-3, and R-4 face south, north, west, and east, respectively. For a collector with two reflectors...

This paper presents transient analysis of an evacuated tubular solar collector. Basic energy balance equations for the glass envelope, the absorber and the fluid are solved using the finite difference technique to predict the various component temperatures as a function of time. Four versions of...

This is the first part of a set of two papers, about the estimation of solar irradiance on the absorber plate and cover of a semi-cylindrical solar tunnel dryer (STD). The second part discusses the modelling and thermal performance results of the STD. A detailed analysis has been carried out in...