You must first confirm the information:
1. How high is the water level? (This is the vertical height from the water inlet to where you plan to install the turbine generator)
2. How many cubic meters per second is the flow rate (or what the diameter of the water pipe might be). used to continuously supply water to the complete pipe)
3. Is the water source affected by the rainy season or the dry season? What is the flow during the dry season?
To understand the above points, you can consult the manufacturer of the micro hydroelectric generator, and they will recommend a suitable machine for you.
If it is a water source with low water head and large flow rate, the “volute axial flow turbine generator” is your best choice.
If it is a water source with a high head and low flow, and the flow changes significantly in winterand in summer, the “double-tube, double-jet oblique impact turbine generator” should suit you.
However, the principle is that you must first confirm the relevant information about your water source.