MY generator water cooler inlet line height - 11 mtr inlet water line height -

MY generator water cooler inlet line height - 11 mtr
inlet water line height - 7 mtr
water come into the line from overhead tank, O/H tank
height - 20 mtr
the first tapping in the inlet line is 2" line which down
to 4 mtr level plateform., second tapping in inlet water
line goes to a pump 6" line installed at 4 mtr level
plateform, pump capacity 200m3/hr, head- 30 mtr, hp-40. the
outlet of pump of 6" water line connected to a header of 6
mtr long of 6" line, on this header the six tapping are
connected, 4 nos. 3" line goes to 11 mtr height water
cooler the pressure of the line is 0.15 to 0.25 kg/cm2, 2"
and 4" pipe line connected to a cooler at 4 mtrlevel
plateform.
my question is, at 11 mtr height level the quantity of
water and flow is not sufficient for my cooler, the temp.
of cooler is rises much more. you are requested to suggest
the modification of pipe line/ pump for take more water
flow and pressure (desired pressure is 1 kg/cm2)

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