- #1

Deathz

- 26

- 1

I would like to ask some questions regarding my thesis. I have a problem identifying which load I should use to calculate the power output of the small generator.

I use an Archimedes screw turbine as the prime mover of my generator, and the water flow is low in my locality, which is why the maximum voltage it could produce is about 4.7 volts.

What I need to do is compare the output efficiency of the modified and non-modified generator.

The modified generator would produce about 4.7 volts, while the non-modified one would produce 2.5 volts.

I want to measure the current to differentiate the efficiency of the two.

I used a 12V and 1-watt load, but the problem I encountered is that it will only draw 0.036 amps, resulting in an output power of 0.036×4.7, which is very small, given that my mechanical input is about 128 watts, as per the p=ygh equation.

What specific load should I use to ensure at least one centiampere to achieve a bigger power output?