fdtou-curs-09 - Cadre Didactice
fdtou-curs-09 - Cadre Didactice
fdtou-curs-09 - Cadre Didactice
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2/14/2003<br />
Transferul termic prin pereţi<br />
cilindrici simpli<br />
A m<br />
=<br />
A<br />
( )<br />
oDacă în relaţia (71) se adoptă l = 1 m, fluxul<br />
2<br />
termic specific pe unitate de lungime va fi:<br />
q<br />
2<br />
= πλ<br />
ln<br />
−<br />
LUCIAN GAVRILĂ – Fenomene de transfer II<br />
2<br />
A<br />
1<br />
ln A A<br />
( T − T ) 1 2<br />
( r r )<br />
2<br />
1<br />
1<br />
[W/m]<br />
(73)<br />
(74)<br />
36
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