Solar Water Pump Differences

[Tigersnake]

Hi, I'm just curious about the differences between two solar pumps. There are 2 submersible well pumps, they both have a head height of 15 meters but one pump requires 200 W of power while the other needs 370 W.

What's the reason behind but having the same performance but different needs for power? Is there any advantage from using the 370 W pump? Considering it's already at a disadvantage in terms of energy needs.

 

[Mattb4]

Without knowing the full specs for both pumps and the application it is impossible to make a comparison. Likely the larger wattage pump has a greater flow rate in GPM.

 

[Tigersnake]

Without knowing the full specs for both pumps and the application it is impossible to make a comparison. Likely the larger wattage pump has a greater flow rate in GPM.

They are meant for watering a garden. The 200 W pump has 15 meters maximum head height and 3000 liters/hour maximum flow rate. The 370 W pump has 15 meters maximum head height and 4000 liters/hour maximum flow rate.

 

[DThames]

Watts are power and to lift water, you need power. The lesser pump will pump slower and use less power. Your choice regarding what matters to you. For a garden, it might not matter unless you run out of sunshine because the pumping is too slow.

 

[Tigersnake]

Watts are power and to lift water, you need power. The lesser pump will pump slower and use less power. Your choice regarding what matters to you. For a garden, it might not matter unless you run out of sunshine because the pumping is too slow.

Alright thanks, things are clearer now.