Elementary Principles 329 - 8.68 (cont'd) Gas cooler: Same...

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8- 50 8.68 (cont’d) Gas cooler: Same refs. as above for product gas, H O C 2 l ,30 ° bg for cooling water substance n in ± H in n out ± H out HCHO CH OH 3 N 2 O 2 H 2 HO 2 19.9 8.34 30.3 0.83 5.0 35.6 0 0 3.51 3.60 3.47 4.09 19.9 8.34 30.3 0.83 5.0 35.6 –1.78 –2.38 2.19 2.24 2.16 2.54 n (mol) ± H (kJ/mol) 2 (coolant) m w 2 0 m w 2 62.76 m (kg) ± H (kJ/kg) ± . HT = ⋅° −° 4184 30 kJ kg C C E.B. Δ Hn H n H m m ii w w =−= += = ∑∑ ±± .. out in .52 kg cooling water 0 1581 62 6 0 2 22 Condenser: CH OH 3 condensed =+ = = nn 88 25 35 788 2758 b g mol CH OH condensed 3 E.B.: Qn H v =− Δ ± 12 7 5 8 3 5 2 7 973 atm mol kJ mol kJ (transferred from condenser) b g b g b. 3.6 10 tonne / y 10 g 1 yr 1 d 1 metric ton 350 d 24 h g h product soln 46 × 4286 10 6 . ×= × × × × × U V | | W | | ⇒× × = 0 37 4 286 10 1586 10 5281 10 0 01 4 286 10 4 286 10 1338 0 62 4 286 10 2 657 10 1475 10 2016 10 2 016 10 759 2657 66 4 5 5 5 1 . . . . . . . . di g HCHO h
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