Dear Student ,
The differences between box type solar cooker and reflector type solar cooker are given below:
Box-type Solar Cooker
1. In this type of solar cooker, a plane mirror is used as reflector.
2. In this type of solar cooker relatively low temperature is attained.
3. It is not possible to bake chapattis in this cooker.
Spherical reflector type Solar Cooker:
1. In this kind of sun powered cooker, the reflecting mirror is round or explanatory.
2. In this kind of sun powered cooker very high temperatures can be accomplished.
3. Chapatis can be supported in this sort of cooker.
Regards