LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice

More documents

Recommendations

Info

3/14/2003 Transfer global de căldură la T 1e T 1i orezultă: potenţial termic variabil −T ∫ −T 2e 2i d ( T − T ) T − T = − o care se mai poate scrie: 1 1 ( T T ) 2e ( T T ) 2 2 f ⋅ K LUCIAN GAVRILĂ – Fenomene de transfer II 36 ⋅ A ∫ 0 dA (232) − ΔT ln 1e = ln 2 = − fKA (233) − ΔT 1i 2i 1 ( f K A) ΔT = ΔT ⋅ exp − ⋅ ⋅ 2 1 (234)
3/14/2003 Transfer global de căldură la potenţial termic variabil ( f K A) ΔT = ΔT ⋅ exp − ⋅ ⋅ 2 1 oDinforma ecuaţiei (234): potenţialul termic la intrare (∆T1 ) este egal cu potenţialul termic la ieşire (∆T2 ) doar dacă A = 0, potenţialul termic la ieşire se anulează (∆T2 = 0) pentru o arie infinită a suprafeţei de transfer termic. (234) LUCIAN GAVRILĂ – Fenomene de transfer II 37
Page 1 and 2: 3/14/2003 TRANSFERUL GLOBAL DE CĂL
Page 3 and 4: 1 1 - transfer convectiv prin filmu
Page 5 and 6: 3/14/2003 TRANSFER TERMIC GLOBAL o
Page 7 and 8: 3/14/2003 TRANSFER TERMIC GLOBAL oL
Page 9 and 10: 3/14/2003 Transfer global de căldu
Page 23 and 24: T T 1 T 2 3/14/2003 Transfer global
Page 27 and 28: T 1i T 1i T 2i 3/14/2003 T 2i ΔT T
Page 29 and 30: T 1 3/14/2003 T 2i a) T 2f H = H H
Page 35: osau: 3/14/2003 Transfer global de
Page 47 and 48: 3/14/2003 Transfer termic la poten
Page 49 and 50: 3/14/2003 1 2 T 1i T 2i Fluidul 1 t
Page 51 and 52: 3/14/2003 Variaţia temperaturilor
Page 55 and 56: ose obţine: 3/14/2003 Variaţia te
Page 73 and 74: 3/14/2003 Transfer termic direct f
Page 79 and 80: 3/14/2003 Transfer termic direct cu
Page 87 and 88:
3/14/2003 Transfer global de căldu
Page 89 and 90:
Re g 3/14/2003 Transfer global de c
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
3/14/2003 VALORI ORIENTATIVE ALE CO
Page 97 and 98:
Analiza coeficientului global de 3/
Page 99 and 100:
Page 101:
show all

LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?