Description
How to make a solar thermal water heater with watering pipe or tubing and a sheet of transparent plastic.
https://en.wikipedia.org/wiki/Solar_energy
https://en.wikipedia.org/wiki/Renewable_heat
https://en.wikipedia.org/wiki/Solar_thermal_energy
https://en.wikipedia.org/wiki/Radiator_(heating)
https://en.wikipedia.org/wiki/Drip_irrigation
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