Whether or not the water flow is powered by the pump or a waterfall, the kinetic energy of the flow may be a factor.
A lack of water movement may explain why some PF type cells failed to perform in the past. They depended on the fickle nature of convection to spring to life. Harry yes, good point Jones, the system input power includes the power to operate the pump and the resistive heaters. That is incorrect. Please review the messages I have posted. The input power does not include the pump any more than it includes the overhead lights or an oscilloscope. Heat generated before the inlet sensor or after the outlet sensor is not measured. - Jed
