1. Dr. Kang Li
Queen’s University Belfast
RCUK Energy Programme
shaping capability and strategy planning
k.li@qub.ac.uk
Melt pressure
Transducer
Slit Die
3 Melt pressure Transducers
to measure pressure drop
Melt Temperature
measured by
Infrared Sensor
Power
consumption by
HIOKI 3169-20
Energy Saving through control – polymer extrusion
Energy Saving through Optimization
Energy waste
• Unnecessary over heating
• Long machine start-up time
• Unacceptable quality
• Machine fault
• Changing material
III. Simulation and Conclusion
● Economic dispatch is the short-term
determination of the optimal output of a
number of electricity generation
facilities, to meet the system load, at
the lowest possible cost.
●Emergency reserve is required on the
purpose of maintaining the reliability in
case of the loss of a main unit or an
increase in load.
2 4 6 8 10 12 14 16
5
10
15
20
25
0
100
200
300
400
500
600
Poweroutput/MW
Generators
Fig. 1 Operating cost obtained by two different methods Fig. 2 Solution to economic loading.
 Tested on a 16-unit ,24-h power system example.
 Operating cost is saved by $723 daily using our method.
II. Differential evolution
I. Introduction
Fig. 3 Diagram of single screw extruder Fig. 4 Various measurements at the melt output
Fig. 5 Soft-sensor approach for measuring melt viscosity
Fig. 6 Intelligent control of melt outputs for a polymer extruder