Has anyone used fresnel lens for anything in the field?
I was wondering if they could be used to boil water, or concentrate heat to a thermal mass to be used in a drier to dry down veggies/ peppers etc.
What would be a good thermal mass to use?
Has anyone used fresnel lens for anything in the field?
I was wondering if they could be used to boil water, or concentrate heat to a thermal mass to be used in a drier to dry down veggies/ peppers etc.
What would be a good thermal mass to use?