Estimate the cross-sectional area required for a 30-cm-long methanol-nickel heat pipe to transport 30 W at atmospheric pressure.
GIVEN
? Methanol-nickel heat pipe
? 30-cm-long
? Atmospheric pressure
FIND
(a) Cross-sectional area required to transport 30 W
ASSUMPTIONS
? The type of wick to be used is a threaded artery wick
? 100°C operation
Table 9.6 gives
Since the total heat transported by the heat pipe is
q = q" axial A
where A is the desired cross-sectional area, we have
or
The heat pipe diameter is
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a.
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b.
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c.
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d.
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e.
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