Cylinder/piston pressure multiplier River water pump

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SUMMARY

The discussion focuses on a submersed water pump designed for river flows, featuring two cylinders with a diameter ratio of 5:1. The larger cylinder, with a diameter of 1 meter and a shroud of 1.5 meters, allows water to flow in and push a piston, while the smaller cylinder, with a diameter of 0.2 meters, compresses the water for discharge. The system utilizes retention valves for controlling water flow and operates continuously by rotating on its axis. Calculations for pressure and power output for a micro hydro turbine at a flow rate of 1 m/s are sought.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Knowledge of hydraulic systems and piston mechanics
  • Familiarity with retention valve functionality
  • Basic concepts of micro hydro turbine operation
NEXT STEPS
  • Calculate pressure in both cylinders using fluid dynamics equations
  • Research power generation calculations for micro hydro turbines
  • Explore designs for retention valves in hydraulic systems
  • Investigate optimization techniques for submersed water pumps
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Engineers, hydrologists, and renewable energy enthusiasts interested in hydraulic systems and micro hydro power generation.

Matos de Mato
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Submersed water pump for river flows.
Two cylinders, one with 1 meter diameter and the other 0.2 m/diameter. Pistons are in the same shaft. Area ratio is of 25 X. The bigger cylinder have a shroud of a diameter of 1.5 meter in both ends and is open on both sides. When we submerse it in the river flow the water flows in and pushes the piston. On the other end of the cylinder the water flows out in the direction of the river flow.
The piston pushes the second piston, in a closed cylinder ( 0,2m/d) and pressures water. The inlets and outlets of this double side cylinder have retention valves to control aspiration and discharged of the cylinder.
The cylinders rotate on its axis, enabling continuous cycles.
I need to find the pressure on both cylinders, if the flows at 1 m/s, and power calculations if the pressure water works on micro hydro turbine to produce electric energy.
 
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