and it's like diesel engines, if they are used unless the full load their efficiency decreases again
You slipped a shell to find out if the reader of the forum sleep?
On a diesel
Contrary to what happens in the explosion engine, the efficiency is better at low load than at full power.
The specific consumption therefore decreases with the speed up to a speed or the friction taking a greater relative imporance, make it increase.
this is one of the reasons that the panton on a diesel does not perform well at low speed, the reactor has its significance where the diesel enters its poor performance .. strong injection poor combustion ..
and that gave us the false impression that it is only the
lack of heat, that I learned by comparison on the petrol engine ..
Regarding pumping in a hollow well it is true provided you make a hermetic loop of liquid which is exchanged in the depths
When I made my first wells for the heat pump, I thought of the same thing pumping water into the tablecloth at 4 meters and discharging it into the tablecloth at 20 meters after working like a savage to sink along tube when I started pumping at 4 meters was easy but the discharge at 20 meters was more painful than pumping (nature of the sand or layer that does not communicate? But I had to give up this idea of easy pumping or of water transfer from an upper table to a lower table, it was beautiful on paper this principle of communicating vases.
The least energy-consuming pumps are the old DURO piston pump with a 1/4 hp motor. It pumps the same volume as a good 1/2 hp centrifugal pump but there is more maintenance.
Certain centrifugal pump for wells deeper than 7 meters, we lower a venturi and with water, we accelerate that of the bottom, to the detriment of the flow.
Andre