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 />
Variaţia temperaturilor<br />
T −T<br />
T i −T<br />
i<br />
1<br />
1<br />
ln<br />
ln<br />
∫<br />
ΔT<br />
2<br />
2<br />
T<br />
T<br />
1<br />
1i<br />
d<br />
ΔT<br />
ΔT<br />
=<br />
i<br />
numai în timp<br />
( T − T )<br />
T<br />
−<br />
−<br />
1<br />
T<br />
T<br />
=<br />
1<br />
ΔT<br />
−<br />
2<br />
2i<br />
i<br />
−<br />
⋅<br />
T<br />
f<br />
2<br />
=<br />
2<br />
⋅<br />
−<br />
exp<br />
f<br />
K<br />
=<br />
⋅<br />
⋅<br />
−<br />
K<br />
A<br />
f<br />
⋅<br />
⋅<br />
t<br />
⋅<br />
K<br />
A<br />
( − f ⋅ K ⋅ A⋅<br />
t)<br />
⋅<br />
<strong>LUCIAN</strong> <strong>GAVRILĂ</strong> <strong>–</strong> <strong>Fenomene</strong> <strong>de</strong> <strong>transfer</strong> <strong>II</strong> 53<br />
⋅<br />
t<br />
A<br />
t<br />
∫<br />
0<br />
dt<br />
(242)
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