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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
251Fundamentals of Solar Radiation
© 2008 Taylor & Francis Group, LLC
Capricorn (23.45°S) are at the extreme latitudes where the sun is overhead at least once a
year, as shown in Figure 5.6. The Arctic and Antarctic circles are dened as those latitudes
above which the sun does not rise above the horizon plane at least once per year. They are
located, respectively, at 66½°N and 66½°S. Declinations north of the equator (summer in
the northern hemisphere) are positive; those south, negative. The solar declination may be
estimated by the following relation*:
δ
s
n
+
°
23 45
360 284
365
.sin
)(
(5.23)
*
A more accurate relation is sin δ
s
= sin(23.
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Publisher Resources

ISBN: 9781466556966