Thermal Food Processing

Simulating Thermal Food Processes Using Deterministic Models 103
Temperature (°C)
Temperature (°C)
150
120
90
60
30
150
120
90
60
30
0 25 50 75 100 125 150
Time (min)
Retort
Center
Retort
Center
FIGURE 3.18 Computer-generated output from computer-based online control system
showing scheduled heating time of 68 min for normal process (above), and heating time
extended automatically to 76 min in compensation for unscheduled temporary loss of
retort temperature (process deviation) (below).
F o
F o
0 25 50 75
Time (min)
100 125 150
25
20
15
10
5
0
25
20
15
10
5
0
Accomplished F O (min)
Accomplished F O (min)