Utilizing latent small hydraulic energy for agricultural production, a prototype water heating apparatus with fluid agitation method was fabricated from a torque converter and its performance was examined.
In the fundamental experiment, the direction of revolution was changed when oil was used as an active fluid, and the gap between agitating blades and fixed blades was changed when water was used. It resulted in a different torque characteristics.
Secondly, flowing water which had 6.05m of effective head and 1.25m³/min of discharge was given to a cross-flow turbine and converted to mechanical energy for water heating experiment.
It generated 428W of mean friction shaft power, and most increased water temperature was 25.0°C whereby the heated water discharge was 0.12l/min and the energy conversion efficiency was 67%.