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Model and control system design of a bench-scale intgrated heat exchanger system

Ahmad, Noor Amnani Binti (2018) Model and control system design of a bench-scale intgrated heat exchanger system. Honours thesis, Murdoch University.

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This thesis project will investigate, implement, test, and develop the model design of the controllers for a bench-scale integrated heat exchangers system. In the Instrumentation and Control laboratory (ICE lab) there are few different types of heat exchanger such as tubular heat exchanger, plate heat exchanger and cooling/heating batch mixer that can be used for control design purposes. These units have not been used for an extended period. The primary focus of the thesis project is to revise the functionality of these three pieces of equipment. The following task will be applied to each type of heat exchanger separately then the integrated system combining all three pieces. The first task was to develop a dynamic mathematical model if possible, or an approximate model of each type of heat exchanger. The second task was to calibrate all sensor and the flow measurements of the equipment and its accessories. The third tasks were to design and implement the control system for the heat exchanger and the integrated heat exchanger system.

The development of the program controller was developed using Laboratory Virtual Instrumentation Engineering Workbench (LabVIEW) and real-time data was monitored and recorded in Microsoft Excel. The approximate model was successfully implemented by using Identification Toolbox. The PI controller was implemented and was considered successful by looking at the response criteria of the process variables. The performance analysis of heat exchangers is tested with setpoint tracking and disturbance rejection. Based on the performance analysis result, the heat exchangers able to reach the desired setpoint.

Overall, this thesis objective was achieved. However, the investigation of integrated heat exchangers system was not fully developed. This is due to the time constraint and limitations that had faced towards the end period of the research. Besides that, there were few problems aroused with the equipment and instruments during the investigation of the thesis, made it difficult to implement an advanced control scheme to the system.

Item Type: Thesis (Honours)
Murdoch Affiliation(s): School of Engineering and Information Technology
Supervisor(s): Vu, Linh
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