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Heat Transfer
book

Heat Transfer

by Younes Shabany
December 2009
Intermediate to advanced content levelIntermediate to advanced
523 pages
18h 30m
English
CRC Press
Content preview from Heat Transfer
344 Heat Transfer: Thermal Management of Electronics
where
Q
ch r,
is the radiation heat transfer rate from a U-shaped channel, N
f
is the num-
ber of ns, σ is the Stefan–Boltzmann constant, ε is the surface emissivity, and t, t
b
,
H, L, W, and S are heat sink dimensions as shown in Figure 13.16. Rea and West [6]
and Bilitzky [7] dened “apparent” or “effective” channel emittance,
ˆ
ε
, such that the
channel radiation heat transfer rate can be calculated as
QSLT T
ch rs,
ˆ
().=−εσ
44
surr
(13.78)
The effective emittance accounts for emission as well as reection from the plate
ns. Since channel base area rather than the whole channel area is used in ...
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Publisher Resources

ISBN: 9781439814680