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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
407Solar Heating and Cooling of Buildings
© 2008 Taylor & Francis Group, LLC
and
f
hh
hh
lc le
ve le
=
(7.92)
Process II represents the vaporization of the remaining liquid. This is the process during
which heat is removed from the chiller. Thus, the specic refrigeration effect per kilogram
of refrigerant q
r
is
qh h
rvelc
=−in kJ/kgBtu/lb()
(7.93)
In the United States, it is still common practice to measure refrigeration in terms of tons.
One ton is the amount of cooling produced if 1 ton of ice is melted over a period of 24 h.
Since 1 ton = 907.2 kg and the latent heat of fusion of water is 334.9 kJ/kg,
1
907 2 334 9
24 3 600
3 516 12 000ton
kg
h
=
×
×
==
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Publisher Resources

ISBN: 9781466556966