LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice
LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice
LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
3/14/2003<br />
TRANSFER TERMIC GLOBAL<br />
o Coeficientul global <strong>de</strong> <strong>transfer</strong> <strong>de</strong> căldură<br />
= cantitatea <strong>de</strong> căldură <strong>transfer</strong>ată între<br />
două medii pe unitatea <strong>de</strong> suprafaţă şi în<br />
unitatea <strong>de</strong> timp, sub acţiunea unui<br />
potenţial termic <strong>de</strong> 1 K.<br />
o K reprezintă fluxul termic specific<br />
<strong>transfer</strong>at sub acţiunea unui potenţial<br />
termic unitar:<br />
K<br />
=<br />
Q<br />
A⋅<br />
ΔT<br />
=<br />
q<br />
ΔT<br />
⎡<br />
⎢<br />
⎣<br />
m<br />
W<br />
<strong>LUCIAN</strong> <strong>GAVRILĂ</strong> <strong>–</strong> <strong>Fenomene</strong> <strong>de</strong> <strong>transfer</strong> <strong>II</strong> 5<br />
2<br />
⋅<br />
K<br />
⎤<br />
⎥<br />
⎦<br />
(211)