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Electrical Engineer | Digital Creator | Creating videos & pics, explaining science, engineering, renewable energy & climate change. Electrical 🧵 everyday.

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How to calculate the power required for a water pump. 1. Pump system The diagram shows a pump moving water from the suction side to the discharge side. H = Head: The height/distance the pump must lift the water. Suction: Where water enters the pump. Discharge: Where water leaves the pump. 2. Formula The formula used is: Where: P = Pump power in watts (W) ρ (rho) = Fluid density, for water 1000 kg/m³ g = Gravity, 9.81 m/s² Q = Flow rate in m³/s H = Pump head in meters η (eta) = Pump efficiency as a decimal 3. Given values The example gives: Flow rate Q = 75 m³/hour Head H = 30 m Water density ρ = 1000 kg/m³ Efficiency η = 70% = 0.70 First, convert the flow rate from m³/hour to m³/second: 4. Calculation Putting the values into the formula: This gives approximately: or: 5. Final answer The calculated pump power is 8.75 kW. In practical pump selection, you would normally choose a motor with some safety margin, so a motor larger than 8.75 kW may be selected depending on the pump's actual performance, starting conditions, and manufacturer specifications.

17,176 views

Water level indicator.

33,767 views

A simple DIY 3.7V li-ion battery charger circuit.

34,430 views

Proximity sensor.

18,933 views

Bridge rectifier.

27,435 views

IR proximity sensor circuit Used an infrared LED to send out invisible light & a receiver to detect reflections. When an object comes close, the reflected IR light is sensed and the circuit gives an output signal. It’s commonly used for obstacle detection and automatic systems.

19,811 views

Current leads voltage in inductor. Voltage lags current in capacitor. No phase difference between current and voltage in resistor.

25,036 views

Carlo Anceloti after that Rodrygo goal. @rodrygogoes001 Real Madrid C.F. Real Madrid C.F.en

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