The distillate cooler is calculated in such a way that if the return flow into the column is blocked, the complete (maximum) mass flow of overhead product can be cooled.
Cooling water inlet: ฯW1 = 20 ยฐC
Cooling water outlet: ฯW2 = 30 ยฐC
Reference temperature for the specific heat capacity of the cooling water:
ฯWB = (20 ยฐC + 30 ยฐC)/2 = 25 ยฐC
Specific heat capacity (linear interpolated according to table inside rear cover):
cW = 4179 J/(kg ยท K)
Required heat flow (p. 238):
ฮฆ = qmD ยท cD ยท (ฯbD โ ฯD2) = 0,258 kg/s ยท 1740 J/(kg ยท K) ยท (80,3 โ 40) ยฐC = 18091 W
K value according to table (p. 235): K = 600 W/(mยฒ – K)
Mean logarithmic temperature difference (p. 237):
Required exchange area (p. 239):
The task
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