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## Homework Statement

I need to design a Rainfall Driven Micro Hydro-Generating System

Under normal operation, the generating system is expected to produce 30 W at 12 V regulated DC

## Homework Equations

1st how to calculate the flow of rainfall

2nd: what are the formulas that I should use?

and what do I need to calculate?

## The Attempt at a Solution

I found the formula P = net head x flow x g

I still need the remaining formulas