Pump water from the Source

[hic]

you need a pump adapted to the pressure ... and to the pressure drop in the pipes

there is no relation between the nominal power and the nominal pressure ... there are low power and high pressure pumps ... just choose the right one

we can calculate the theoretical power of a pump by simply multiplying flow by pressure

therefore flow = power / pressure

provided that everything is put in SI unit

example 600W and 40m = 4bar = 400000 Pa

600W / 400000 Pa = 0,0015 m3 / s
x 3600 = 5,4 m3 / h

of course this is the theoretical flow rate of an ideal pump with efficiency 1 and with a huge pipe without pressure drop

to have the exact figure we have to calculate in more detail, but my pifometric hypothesis of 0,5m3 / h was deliberately pessimistic: with good material we can do better

hi chatelot16
Question,
Does dividing work by 4 pumps not improve the performance of a single pump?

the single pump is 4 bars to overcome gravity, +1 bar
4 pumps is 1bar to overcome gravity, +4 bars

[chatelot16]

each pump has an optimum pressure or its performance is the best ... of course we can choose to put in series several pumps whose sum of pressures will count, but it is rarely profitable: the smaller the pumps the more they are expensive, so it is better to have a large well-chosen pump than several small

also check that the quality of the pump seals supports the pressure ... putting 4 pumps that make 1 bar will make it 4 bar, unless the seal of the last pump does not hold

a single pump has only one rotary joint on the suction side and can have several stages to increase the pressure without joint between the stages therefore no problem

when you give pressure to the suction of a pump placed in the nth stage it holds or not


but don't worry, electricity is cheaper than water even when there is a drop of 100m