LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice
LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice
LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice
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3/14/2003<br />
Transfer global <strong>de</strong> căldură<br />
direct între două flui<strong>de</strong><br />
o Evaporarea la suprafaţa unui lichid în<br />
curent turbulent <strong>de</strong> gaz în curgere<br />
forţată<br />
Nu *<br />
g<br />
*<br />
( ) 33 , 0 *<br />
0, 8<br />
Pr g<br />
Nu = 0,<br />
027 Re<br />
g g<br />
⋅ d<br />
=<br />
D<br />
β<br />
ν<br />
g<br />
Pr * g<br />
g =<br />
Dg<br />
- criteriul<br />
Nusselt<br />
la<br />
difuziune<br />
pentru<br />
- criteriul Prandtl la difuziune pentru gaz<br />
gaz<br />
(284)<br />
(285)<br />
(286)<br />
<strong>LUCIAN</strong> <strong>GAVRILĂ</strong> <strong>–</strong> <strong>Fenomene</strong> <strong>de</strong> <strong>transfer</strong> <strong>II</strong> 92
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