Designing/building a machine with the kwale law has rules, although methods or techniques to apply the kwale law in practice will not be written in this report but the mechanism of mechanical energy amplification will be explained. In other for a machine to fully work with the principles of the kwale law, two internal working volumes has to created which are:
1. Control Volume: This volume serves as the flow path, so the barrier responsible for power amplification does not interfere with flowing fluid but just lies along the path of the flowing fluid. The control volume determines the speed of rotation of the machine and the ratio of the control volume to the trapped volume determines the total energy output.
2. Amplifying volume(trapped/unaccounted volume): The amplifying volume decouples the volume and force relationship when applying the kwale law in practice, since its volume lies along the flow path of the machine, the pump does not have to provide the extra flow but an extra force is added to the machine which is determined by the pressure of flow of the liquid. The more the ratio of amplifying volume to control volume, the higher the torque output without increase in flow volume.
The implication of the amplifying volume and control volume can be represented mathematically in terms of overall input and energy output.
EIN = ECV + EAV.
Where EIN is energy input
ECV is energy gained by barrier of control volume
EAV is energy gained by barrier at amplifying volume
The mathematical equation above means that the output energy could be easily manipulated since the amplifying volume does not require any extra flow, it is already in the flow path of the fluid, the amplifying volume is responsible for the torque increase without volume increase, hence the mechanical energy amplification effect and the force and volume relationship decoupling.
DESIGN AND CONSTRUCTION:
Due to technological and financial limitations faced during development, a fully functioning machine with kwale law was not possible because the available technology and manpower I could afford cannot machine/build a machine with correct dimension and standard surface finish for hydraulic applications, an Eaton Vickers m25 hydraulic motor was bought from a Chinese manufacturer, taken apart and a new core incorporated with the kwale principle was built and installed into the hydraulic motor.
A major drawback during incorporation of the kwale principle into the original Eaton Vickers machine was that the amplification effect would be mostly in one direction of the machine rotation due to the new core geometry, else the amplification effect will not be felt or the machine will be damaged because of design principles of the original Eaton Vickers. Although a drawback, it was also proof, because hydraulic motors have equal torque and power in both direction of rotation so long pressure and flow rate remains the same, any increase in pressure or flow rate means an increase in input power.
The following tools and equipment were bought;
- Eaton Vickers m25 motor
- 24vdc hydraulic pump
- Scale (100kg max)
- DC watts meter (100amps)
- 12vdc 18APH x 2
To set up the experiment, the 25m Eaton Vickers motor core was replaced with a new core, a pulley was mounted on the motor, the pulley is attached with a scale mounted on a flat plate screwed to the body of the 25m Eaton Vickers motor. A 24vdc hydraulic pump is connected to the DC watts meter which is connected to the 24v battery bank.