I don't think it would be simple to calculate the energy efficiency on that system. You could ask 3 engineers and get 3 different answers. I wonder if a smaller version of that system would be efficient as a point source water heater for a shower or something, like a tankless water heater. The motor sounds loud though.
Would be very easy to calculate. 5 minutes for an average physics student, don't need an engineer for this.
Energy input (electric power) vs. delta in water temperature (per volume) on the output. Skip any middle step mumbo jumbo.
Super easy to compare against a electric water heater doing the exact same thing.
2 poos and 1 white engineer. Wonder which one will be right.
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