Question

what can be used to reduce noise in a pump ?

Answer #1

Use pipe bends of large radius to minimise the impacr of which which causes vibrations.

Use vibration isolators at the mounting to minimise vibrations.

Use pressure valves to reduce pressure when necessary.

Place a pumpset inside a room with sound insulation.

Limit the velocity of flow by increasing the pipe size.

Increase liquid level around suction area, reduce RPM of motor, Reduce temperature...this all will fix the problem of cavitation which causes noise in the pump.

An employer needs to reduce noise exposure so that an employee
can work on a machine generating 117 dBA for 1 hour. What noise
reduction rating should the employer seek to stay within allowable
limits and have a 50% safety factor?

Using diagrams, list and explain two ways that
construction design solutions are used to reduce noise at the
source.

What are some methods that can be used to get rid of or reduce
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Can a single vacuum-type pump be used to lift water
from a well that is 30m deep

In a given application, an averaging mask is applied to input
images to reduce noise, while a Laplacian mask is then applied to
enhance small details. Would the result be the same if the order of
these operations were reversed?

An
electric pump consumes 15 kW electricity, and is used to pump water
at a volumetric rate of 50 L/s. The absolute pressures at the inlet
and outlet of the pump 100 kPa and 300 kPa. Assuming that there is
negligible difference in kinetic energy between the inlet and the
outlet (how is that possible?) and that there is negligible
difference in height between the inlet and the outlet, calculate:
(A) the mechanical efficiency of the pump, and (B) the...

What is Brewster's angle?
Explain, in details, why Polaroid sunglasses can be used to
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QUESTION 1
(a) What is the ‘Noise’ in a relationship?
(b) What is the forecast for a multiplicative model where the
trend is 30 and the seasonal index is 1.5?
(c) Use the formula and Venn diagram to illustrate the nature of
mutually exclusive events.
QUESTION 2
A boost pump is set to pump out 5L of water per minute. A sample
of 20 separate minute tests have showed that an average of 5.2L of
water per minute were pumped...

What is the difference between noise measured for an LED and the
noise measured for a laser? which one generates more noise?

An initially empty tank is filled with water. The pump used is a
displacement pump that provides a flow of Q=0.5*(1+sin(t/30))
m3/min, where t is in seconds. Calculate the volume in the tank
after 1hr

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