Abstract:

The paper presents an analysis of the distribution of energy absorbed by base plate and walls of the absorber tray due to mirror reflected radiation for a solar hot box. The absorber tray has been considered as composed of five surfaces (base plate and four walls). Using solar geometry angles, collector-reflector design parameters and with proper boundary conditions the expressions for reflected radiation receiving areas have been developed for these surfaces. The developed formalism has been studied for various cases such as non-tracked, azimuthally tracked collector with fixed mirror angle and fully tracked modes. The developed formalism can be used in general for any flat plate collector with four walled absorber tray. The results of calculations presented here are for hot box solar cooker with inclined walls. This study may serve as a useful aid in better designing of four walled flat plate collectors.<

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