Solar concentrator

[erikatafel]

The plan for this unit is to have coils placed where the sun condenses and heat water running through the coils to supplement our off grid home.

[mcgrath9]

put a hot water tank above all of that heat

[erikatafel]

This dish was made out of recycled material. The only cost was for silcone and hot dogs. Less than $30. Lastly if it seems childish it was because we were doing the demo for children.

[fisioserv]

I would suggest showing some other practical application besides cooking a hot dog!!!! all that money spent for a hot dog seems too childish.