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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
272 Shipboard Electrical Power Systems
If the equipment saves S
kW
in power loss and costs ∆P more, it will save money over
30 years only if ∆P < S
kW
× PLCR. A case where ∆P = S
kW
× PLCR
will result in
breakeven. However, 30 years is too long for most managers, who would be gener-
ally interested in 1 kW loss saving advantage only if the additional capital cost ∆P
<
1
/
3
S
kW
× PLCR.
Example 11.1
A 1000 kVA transformer is open for procurement. Vendor A offers 97% efficiency
at $90,000 price and vendor B offers 98% efficiency at $100,000 price. Determine
the profitability of buying the high-efficiency transformer. Assume that (i) quoted
efficiency is a ...
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Publisher Resources

ISBN: 9781439828175