Page 383 - Design and Operation of Heat Exchangers and their Networks

366 Design and operation of heat exchangers and their networks

0.00

Linear model
–0.01
Linearized model
–0.02

–0.03

q –0.04

–0.05 q 1
–0.06 q 2

–0.07

–0.08
0 100 200 300 400
t
Fig. 7.8 System responses from a steady state ( ^ t ¼ 1, ^ t ¼ 0) to a step
0
0
1
2
disturbance in the mass flow rate of stream 1, σ 1 ¼ 0.2.
0.04
Linear model
0.03 Linearized model
q
0.02 2

0.01
q 0.00

–0.01
q
1
–0.02

–0.03

–0.04
0 100 200 300 400
t
Fig. 7.9 System responses from a steady state ( ^ t ¼ 1, ^ t ¼ 0) to a step
0
0
2
1
disturbance in the mass flow rate of the circulating stream, σ 2 ¼ 0.2.