Need Help Building a Good Solar Cooker
Dear Mr Parry,
Thank you for your informative website. Our family has been working on three different models in the past three days, and none of them worked (well)! We live in India and it is 44 degrees C, so sunshine should be no problem.
The first was was a tin trunk with a sheet of plastic and some shiny steel on the sides as reflectors. That heated water up to 80 degrees.
With one that looks like the 'heaven's flame' we had some success, The water heated till 95 degrees C, but that took 5 hours, and then the sun moved behind the house.
Then we tried 'the minimum', and put it on the roof, so no problem with the sun disappearing. But the water never got hotter than 75 degrees!
Of course we didn't have an oven bag so we put some ordinary plastic in the lid instead. It was not very clear plastic, would that be a problem? Shall we try glass?
Our aluminum foil is rather wrinkled, would that be a problem?
We couldn't find any information on the angle of the lid. That might be a reason why it failed as well.
We painted a pot black, but the lid on it was silver colored. Could that be a problem?
We would rather use a system with glass than using plastic bags, as we are trying to avoid waste.
I hope you have some ideas for us, though I realize that it is hard to advice from a distance!
Thank you for sharing your experiences and your request for guidance.
I think that our site visitors might be able to help you with some information and I will do the same shortly.