Don't use shift solve Use given required and solution 1. A DC driven double-suction,single stage, centrifugalpump running at 1800 rpm delivers 3.5 gallons perhr. of seawater (S.G. = 1.03) from a source wherethe water level varies 2 m from high tide to low tidelevel. The pump centerline is located 3 m above thesurface of the water at high tide level. The pumpdischarges into a surface condenser, 3 m above thepump centerline. Loss of head due to friction insuction pipe is 0.80 m and that in the discharge sideis 3 m. The mechanical efficiency of the pump is70%. Determine the following:a) Pump power in Hpb) Specific speed of pump in rpmc)If the centrifugal pump is modified to operate1500 rpm, what will be the power input to thepump in Hp?

GivenN=1800 rpmQ=3.5 gl/ hrS.G=1.03h=2mhs=3mhd=3mhfs=0.80mhfd=3mη=70%

Answered: A DC driven double-suction, single…

A DC driven double-suction, single stage, centrifugal pump running at 1800 rpm delivers 3.5 gallons per ton (SC 1.02) from

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter26: Applications Of Refrigeration Systems

Section: Chapter Questions

Problem 9RQ: Three disadvantages of parallel compressor systems are _____, _____, and ____.

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Question

Don't use shift solve

Use given required and solution

1. A DC driven double-suction,
single stage, centrifugal
pump running at 1800 rpm delivers 3.5 gallons per
hr. of seawater (S.G. = 1.03) from a source where
the water level varies 2 m from high tide to low tide
level. The pump centerline is located 3 m above the
surface of the water at high tide level. The pump
discharges into a surface condenser, 3 m above the
pump centerline. Loss of head due to friction in
suction pipe is 0.80 m and that in the discharge side
is 3 m. The mechanical efficiency of the pump is
70%. Determine the following:
a) Pump power in Hp
b) Specific speed of pump in rpm
c)
If the centrifugal pump is modified to operate
1500 rpm, what will be the power input to the
pump in Hp?

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