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Solutions 25.2 Kg/8ec @ moil, P=160°C =15C = 3061 W/mK ho = 400 W/m²K in water 2.5 kg/sec $=85°C K = 120 WMK h di = = 0.025m , do= 0.031m ( 3mm thick tubes) of tubes 3- # Q = miferit (& -ta) – moly Grail* ([email protected])=0, A. AEN19° * Assumptions I 1- No heat loss into the surrounding. & Expansion & contraction neglected.

Eriform heating & cooling focess from 9 Macester Cphtuler *42- &z)= mult Grue *(4-ą) 2:5 19 fec* 4184* (85-15)°C= * (85-15)°C = 5-24*2350J (1601-T) Te = 100.082°C © * sec kgec Temperature profile T= 166c $=854LAT = 75°c T= 100.082°C AT 85.082°C 14=15°C distance

@R ① R=9-2 160-100.082) t-t = 0.86 (Abbraxa (85-15)°C S=P= t-tq (85-15) * I-te = 0.483 (Approx) (160-15% F = 0.86 (Affox) from graph (05-05) ATUMTD = F*(TLMTD). = 0.86. sale Ideal ln (AT) AT ATLMT) = 0.86* (75–85.082) = 68.74415165°C ln (758 85.08285 # 14 TLMTD = 68.7442°C Abbook Chave d. + do bi (do/di) - @ *1 1 Ve 1 he 2K di 0.031m lor (0.031m) 1' + 0.025m 1 Vo 400 W mak 2* 120W/mK 10.031m H 0.025m) 3061W m²K # lu = 340.9616W m²K Approx

© # forom @ mwater *(6) Water* -ta) = V. AXOTEMTE 340.9616W *H*0.0310* L*68-7442%= 2.58 x 41842_*(85–15) mi Set #2 = 320.76m Abbor

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