I am making a batch water heater out of an old immersion heater.

Does anyone know the mathematical formula for calculating the solar radiation in watts.

I would assume that the cylinder is in the perfect perpendicular alignment to the sun.

We know the radius and the length. The tank is circular.

Does anyone know the mathematical formula for calculating the solar radiation in watts.

I would assume that the cylinder is in the perfect perpendicular alignment to the sun.

We know the radius and the length. The tank is circular.

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