Want to build a solar collector

[Toad]

My idea, is to build a box, with tubes containing anti-freeze that will heat up with solar heat, to either circulate into the house through a radiator with a fan behind it. Perhaps even bank the heat in a water drum, to keep giving heat when the sun goes down.

OR

To make a solar collector, that is based on forced air, no liquids at all, to heat a space during the day.

Please share your idea's, knowledge or personal experience on this matter.

[Toad]

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