pipe design question
Discussion
not sure where's the best forum to place this, but figures it's job related and there always seems to be engineers hangng around in here.
consider the following:
a bulk storage tank [2 x 1500 m3 tanks linked to common output] providing a head pressure to a pump of between 0.6 - 1.2 bar depending on the fill level.
the pump provides a flow rate of 21 m3/hr at 7.0 bar into a ring main. the consumers are level controlled and so return flow is also 21 m3/hr max [no consumer valves open].
i haven't done detailed calcs yet but the return pressure is likely to be >2.0 bar.
the return leg has to be tied into the feed line from the bulk tank.
my question is how to do this to ensure correct flow conditions are met - i.e. no backflow/stagnation of the bulk feed and the pump is always seeing above 0.5bar suction head?
do i need to regulate the pressure in both the tank feed and ring main return leg or can i get away with just one on the return?
answers on a postcard please. any web based resources for this kind of thing?
consider the following:
a bulk storage tank [2 x 1500 m3 tanks linked to common output] providing a head pressure to a pump of between 0.6 - 1.2 bar depending on the fill level.
the pump provides a flow rate of 21 m3/hr at 7.0 bar into a ring main. the consumers are level controlled and so return flow is also 21 m3/hr max [no consumer valves open].
i haven't done detailed calcs yet but the return pressure is likely to be >2.0 bar.
the return leg has to be tied into the feed line from the bulk tank.
my question is how to do this to ensure correct flow conditions are met - i.e. no backflow/stagnation of the bulk feed and the pump is always seeing above 0.5bar suction head?
do i need to regulate the pressure in both the tank feed and ring main return leg or can i get away with just one on the return?
answers on a postcard please. any web based resources for this kind of thing?
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