PLANT DESIGN (H82PLD)

SPRING SEMESTER 2006-2007

Q2:

(a) Hot utility = 40kW Hot stream pinch temperature = 480 C

Cold utility = 106 kW Cold stream pinch temperature = 460 C

Q3:

Nm = 4.31

Rmin = 0.425

R=1.3Rmin = 0.552508767

N = 2 Nm = 8.618016408

Q4:

(a) Hot utility = 90kW Hot stream pinch temperature = 260 C

Cold utility = 50 kW Cold stream pinch temperature = 240 C

Q5:

(a)

vC3 = fC3C3 = 15.22 yC3 = 0.48vC5 = fC5C5 = 9.00 yC5 = 0.29vC6 = fC6C6 = 7.33 yC6 = 0.23V = vk = 31.55

(b) T = 122.9C

SPRING SEMESTER 2007-2008

Q1: (a)

vC2 = fC2C2 = 9.73 yC2 = 0.14vC3 = fC3C3 = 18.39 yC3 = 0.26vC4 = fC4C4 = 16.00 yC4 = 0.23vC5 = fC5C5 = 18.32 yC5 = 0.26vC6 = fC6C6 = 7.63 yC6 = 0.11V = k vk = 70.07 k yk = 1.00

(b) P = 6017.326 mmHg

Q2:

(b) Minimum units = 4 process streams + 2 utilities - 1 = 5

Q3:

(a) Total head loss = 100 when Q =100 m3/h

(c) Q = 64 m3/h; H = 230 m; Power = 44.1232 kW

Q4:

(a) Hot utility = 760 kW Hot stream pinch temperature = 145 C

Cold utility = 960 kW Cold stream pinch temperature = 125 C

SPRING SEMESTER 2008-2009

Q1:

(a) Nmin = 9

(d) Flow rate of hot oil = 0.03 kg/s

Flow rate of Cooling water = 13.55 kg/s

Q2:

(a) ROI =0.28 PBP = 2.71 yr

(b) ny = 5 yr

Q3:

(b)

(i)

Tmin 55. CHot Pinch 159. CCold Pinch 104. CQ hot(min) 21.799 MWQ cold(min) 16.037 MW

(ii) Annualised capital cost = $279876

Cost of Hot Utility= $ 65397

Cost of Cool Utility= $ 16037

(iii) T optimum = 55 oC

Q5:

(a) 5 shells

(b) Ft = 0.7841

(c) 1713 m2