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Fuel Cells
book

Fuel Cells

by Shripad T. Revankar, Pradip Majumdar
May 2014
Beginner to intermediate content levelBeginner to intermediate
748 pages
23h 13m
English
CRC Press
Content preview from Fuel Cells
426 Fuel Cells
start-up under cold environment conditions using the same integrated ow
channel ow loop.
Example 10.2
Consider an 80-kWe PEM fuel cell stack with an operating power ef-
ciency of 55%. Determine (i) heat generation rate and (ii) mass ow rate
of water as coolant assuming 60% of the heat is picked up by the coolant
uid and assuming a coolant temperature rise of ΔT
c
= 10°C.
Solution
i. Net heat generation can be estimated from the denition of
thermal efciency as
η
th
e
eg
en
=
+
W
WQ
.
Circulating
pump
Heater
Ai
r
H
2
Radiator
Circulating pump
FIGURE 10.9
Schematic of an integrated cooling/heating system.
427Fuel Cell Stack, Bipolar Plate, and Gas ...
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Publisher Resources

ISBN: 9781420089684