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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
Economic Use of Power 277
Example 11.5
A daily power consumption profile of a customer is shown in the table below,
where the kW loads are average over the period listed and kVA demand meter
readings are peak over 15 min intervals during the period. This pattern repeats for
all days in a 30-day month. The utility tariff to this consumer is 12 cents per kWh
plus $15 per peak kVA demand over the month. Determine the monthly utility bill
(a) with present usage pattern, and (b) with pf improved to unity. Also determine
the daily load factor of this consumer as seen by the utility company.
Time Period Power Usage kW kVA Demand
12 a.m.–4 a.m. 100
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Publisher Resources

ISBN: 9781439828175