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Principles of Sustainable Energy Systems, Second Edition, 2nd Edition
book

Principles of Sustainable Energy Systems, Second Edition, 2nd Edition

by Frank Kreith, Susan Krumdieck
August 2013
Intermediate to advanced content levelIntermediate to advanced
790 pages
30h 5m
English
CRC Press
Content preview from Principles of Sustainable Energy Systems, Second Edition, 2nd Edition
392 Principles of Sustainable Energy Systems
© 2008 Taylor & Francis Group, LLC
The monthly °C-days for Denver are taken from the U.S. NWS and given in Table 7.9.
The energy demand is calculated as
Energydemand
h
day
C-days ×°UA
B
24
The monthly energy demand is given in Table 7.9.
If the annual energy demand of 62.9 GJ is delivered by a 65% efcient gas furnace,
then the
Averageannual purchased energy =
62.9
0.65
GJ GJ= 96 8.
7.5.4 Service Hot Water Load Calculation
Service hot water loads can be calculated precisely with the knowledge of only a few vari-
ables. The data required for calculation of hot water demand are
Water source temperature (T
s
)
Water deliv ...
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Publisher Resources

ISBN: 9781466556966