box-type solar cooker; determination; standardization; heating
The performance of a box-type solar cooker can be represented in terms of two figures of
merit, F 1 and F 2. The second figure F2 is a controlling factor in the sensible heating of a load. The present work validates F 2 by computing this figure from experimental data by two different procedures and comparing the results. An attempt has also been made to provide some guidelines for selecting a suitable
temperature interval for determination of F 2. The results of some experiments to study the effect of number of pots and the load on F 2 have also been presented. It is recommended that for standardization tests should be conducted at full load.