Page 156 - Process Equipment and Plant Design Principles and Practices by Subhabrata Ray Gargi Das

5.10 Design illustration 153

Table P5.3B Temperature interval heat balance and problem table cascade.
1790.26
238 16 0 kW
kW
ΔH = (–) 1484.1 kW
187 1484.1 3274.36
CP = 128.1 (+) 693
CP = 29.1 (–) 291
180 2 791.1 2581.36

170 13 1082.1 2872.36
(–) 873.8
153 1955.9 3746.16
T* (°C) (–) 44.6

151 3 2000.5 3790.76
(–) 733.92
127 2734.42 4524.68
CP = 22.3
126 14 3780 + 364.16 = 4144.16
111 CP = 53.34 ΔH = 3780 (–) 1409.74 380.52
CP = 8.28 (+) 380.52

99 CP = 8.95 19 (–) 1790.26 0
(–) 713.79
66 4 (–) 1076.47 713.79
(–) 947.98
35 (–) 128.49 1661.77
T pinch = 99°C
T h, pinch = 99+5 = 104°C
T c, pinch = 99–5 = 94°C