Fig. 1. Cross section of hybrid solar oven
The HSO design with 1- Reflective area, 2- Inclined double-glazed cover, 3- Black horizontal plate, 4- Interior reflective surface, 5- Vertical front door, 6- Pot, 7- Black grill cover, 8- Galvanised sheet walls with spun glass, 9- Heating unit appear in Fig. 1. The double-glazed, features an inclined cover based on the local latitude and has fixed and mobile units. It has a fixed transparent collector surface of 0.380 m2 with a solar horizontal projection height corrected of 0.500 m2 and an absorbent surface of 0.334 m2 (Castell et al, 2000 [12]). The metal box, made of galvanised sheet walls, is insulated by three inches of spun glass.