Development and experimental evaluation of small concentrated solar oven

Abstract

In this work, the small scale of solar oven was developed and its performance was evaluated. The dimension of the oven was 13.5 × 13.5 x13.5 cm of length, width, and height respectively. To concentrate the incident radiation, four flat reflectors were installed and the reflected radiation was directed to the oven. The artificial solar radiation which consisted of nine incandescent light bulbs in an array was used as a source of radiation for performance evaluation. 90 grams of water was used as tested material to be heated. The temperature of the water, oven chamber, and ambient were measured by using thermocouples and the radiation intensity was measured by using a solar power meter. Four configurations of the solar oven were compared to investigate the influence of glass cover on the top and insulation layer on the wall of the oven under various intensity of radiation. The experimental results show the highest temperature was achieved when the glass cover and insulation layer was installed at the oven. In this configuration, the increasing water temperature was observed as 7.6 °C and 26.6 °C under radiation intensity of 137 and 880 W/m2 respectively. However, the efficiency of the oven tended to decrease when the radiation intensity was highIn this work, the small scale of solar oven was developed and its performance was evaluated. The dimension of the oven was 13.5 × 13.5 x13.5 cm of length, width, and height respectively. To concentrate the incident radiation, four flat reflectors were installed and the reflected radiation was directed to the oven. The artificial solar radiation which consisted of nine incandescent light bulbs in an array was used as a source of radiation for performance evaluation. 90 grams of water was used as tested material to be heated. The temperature of the water, oven chamber, and ambient were measured by using thermocouples and the radiation intensity was measured by using a solar power meter. Four configurations of the solar oven were compared to investigate the influence of glass cover on the top and insulation layer on the wall of the oven under various intensity of radiation. The experimental results show the highest temperature was achieved when the glass cover and insulation layer was installed at the oven. ...