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Title: Modelling and control of waste heat recovery system
Author: Chowdhury, Jahedul Islam
ISNI:       0000 0004 6424 5381
Awarding Body: Queen's University Belfast
Current Institution: Queen's University Belfast
Date of Award: 2017
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This research focuses on the waste heat recovery (WHR) from low and medium grade heat sources, and its conversion into mechanical rotations and electrical energy using organic Rankine cycle (ORC), in automotive and industrial applications. The research outcomes include: (1) development of subcomponent models including a novel fuzzy based evaporator model of the supercritical ORC-WHR system using thermodynamic and numerical methods in MATLAB/Simulink, (2) overall ORC-WHR integration and complete system simulation to improve thermal and heat recovery efficiency in steady state and dynamic conditions, (3) investigation of the system performance with respect to stationary and mobile heat sources, (4) transient response analysis and dynamic simulation of the ORC-WHR system with respect to low and medium grade heat sources, (5) development of appropriate control strategies for the high thermal inertia and slow response ORC-WHR system, (6) development of a novel control algorithm to improve control performance of conventional controllers in WHR systems, (7) control system simulation to improve the operational performance, continuity, and safety of the system under steady and transient heat input conditions.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available