Design and Construction Solar Oven Sterilizer

Abstract

Researchers are seeking to help doctors, especially surgeons, in remote areas overcome the problem of diseases transmission by using non-sterile surgical equipment. This study presented a design and model of a low-cost solar sterilizer to sterilize surgical equipment with hot dry air. Sterilization with dry hot air requires a temperature160℃ for 60 minutes. The design includes a stainless steel box with dimensions of 60 cm×30 cm×12 cm in which the surgical equipment is placed. This box is placed inside a chamber with insulated walls, except for the front and top. The front and top are a layer of tempered thermal glass. This chamber rests on an iron base that rotates around an axis in its center to follow the sun from east to west. Placed reflective sheets arranged in a cone shape around the surgical equipment box to increase the thermal enablement of the box. The system was tested in several variants. With and without surgical equipment and with and without reflective plates. The system achieved 160℃ hot air in 121 minutes. This period increased by 23.9% when surgical equipment weighing 1.2 kg was placed. The presence of reflective plates reduced the time required to achieve the required heat by 9%.