Our best solution was the one with the arched design. Even though this one was the most difficult to build, we chose this solution because we thought that this design would be the most efficient one of the 3. After we chose this design, we made the design more detailed. To make sure the arch didn't collapse, we put a V shaped wall on the bottom of our box so that it would support the arch. We also put cotton balls on the bottom of the box hoping that they would help insulate the box. We also added a panel like in the box solar cooker to reflect more light into the cooker. The final thing we added was the clear wrap we put on the top to prevent heat loss.
Solar Cooker | Best solution |