Pure physical calculation, not professional.
Based on 2.5 kilowatts of cabinet air conditioner:
mgh=2500
mg=2500/50=50kg/s
< p>Also In other words, if all the gravitational potential energy of the water is converted into 220 volts of electrical energy, the flow rate must be 50 liters/second.In fact, the efficiency of this type of micro-hydraulic power generation unit may not reach 40%, and the undervoltage operation of the air conditioner can easily burn the compressor, the input power must therefore have a margin, then:
The required flow rate is at least (50/0.4)/0.8=156 liters/second
The above only provides ideas, the data cannot be used! This can be tried as a hobby and makes little business sense.