8- 41 8.64 (cont’d) References: B(l, 10oC), I(l, 10oC) substance ±ninmol / hbg²HinkJ / mol±noutmol / h²HoutkJ / molB (l) 8575 0 -- -- B (v) -- -- 8575 42.21 I (l) 15925 0 -- -- I (v) -- -- 15925 41.01 ²²....HHCCHnHnHoutvpoutvpiioutindididiBBBIIIkJ / molkJ / mol=+===−=−zz∑∑ΔΔΔ101801018042 2141018575 42 2115825 4101Δ±.H=×1015 106kJ / h c. Qm⋅−1015 102 62215456.±.kJ / h =kJ / kg CChfoo±mhfkg / h=2280d. 25402 62215451131 106kg / hkJ / kg CCkJ / h⋅−=×Heat transfer ratekJ / h−×=×1131 101015 10116 10665...e. The heat loss leads to a pumping cost for the additional heating fluid and a greater heating cost to raise the additional fluid back to 215oC. f. Adding the insulation reduces the costs given in part (e). The insulation is probably preferable since it is a one-time cost and the other costs continue as long as the process runs. The final decision would depend on how long it would take for
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This note was uploaded on 01/07/2012 for the course CH E 210 at Pennsylvania State University, University Park.