Effectiveness of Reflective Insulation in Box Solar Cooker

In this paper, we present comparative performance of box solar cooker fitted with reflective insulation and the cooker with the usual glasswool insulation. It is found that reflective insulation made of Alseal with one air space of 25 mm is as effective as glasswool of 50 mm thickness. Increasing the number of air spaces to two does improve the performance, but only marginally. Reflective insulation promises to be an effective substitute for glasswool in cookers. It will permit appreciable reduction in weight and bulk of existing cookers.