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Shipboard Electrical Power Systems
book

Shipboard Electrical Power Systems

by Mukund R. Patel
December 2011
Intermediate to advanced content levelIntermediate to advanced
370 pages
12h 24m
English
CRC Press
Content preview from Shipboard Electrical Power Systems
50 Shipboard Electrical Power Systems
Example 2.4
A water pumping line has a chain of equipment in series as shown below from
the prime mover to the end pump that must deliver 1000 hp output. The motor
is powered via cable and a step-down transformer connected to a dedicated
3-phase generator. Assume the following efficiencies: generator 97%, transformer
98%, cable 99%, motor 96%, and pump 95%. Determine the prime mover hp
rating required for this pumping system.
Generator
Eff. 97%
PM
Transformer
Eff. 98%
Cable Eff. 99%
Motor
Eff. 96%
Pump
Eff. 95%
Pump
output
1000 hp
G
M
P
SOLUTION
The efficiencies of series equipment multiply; hence, the total efficiency ...
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Publisher Resources

ISBN: 9781439828175