Enabling rating of intermediate temperature solar cookers using different working fluids as test loads and its validation through a design change

The impact of design change at an intermediate temperature on the TPP has been assessed by changing the radiative characteristics of the cooking pot surface to validate the proposal. It is observed that in the case of concentrating solar cooker the design change has a large impact on the TPP value and accordingly the maximum achievable cooking temperature and reference time show substantial improvement. However, in a box type cooker, the impact of design change is seen to be insignificant.