a) Temperature Gradient in the oven

First of all, characterization of the empty oven has been done with one and two reflectors: the temperatures profile in the oven, in the direction of the height during the day, is observed and plotted (see curves fig. 2).

140

P 120

100

ш

80

60 (D

40 20 0

—♦—536 W/m2 -■—854W/m2 —A—866W/m2

Temperature versus height curves indicate that the points are almost at the same temperature.

b) Temperature rise in the oven

Two experiments have been made using one reflector and two reflectors to see the influence on the temperature rise.

The two reflectors experiment data shows that the temperature rise up to 156°C in the oven depending on the solar radiation and with one reflector, the temperature rises up to 130°C (see curves Fig.3 & 4).

Fig.4.

Fig.3

From these tests, it results that the reflectors have great influence in the cooking capacity of the oven.