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Now showing items 541-550 of 617
Experimental and numerical investigation of the flow structures at the rear of three-dimensional bluff bodies
(2023-05-01)
Flows around bluff bodies have complex structures, which create drag, surface contamination and stability issues for transportation systems. The standard Ahmed body (SAB) is a simplified representative three-dimensional ...
Investigation into the stability of low-inertia micro-grids
(2023-05-01)
This work examines the stability of low inertia micro-grids (MGs). The lack of inertia in such power electronics dominated grid is a pressing matter that directly impacts its operation and stability. The investigated MG ...
An investigation into Manganese(2+) interferences and retrospective dose assessment of shelled species using EPR spectroscopy
(2023-05-01)
High intensity Mn²⁺ peaks in calcified tissues of shells are known to impact the lower dose detection limit in retrospective electron paramagnetic resonance (EPR) studies. This thesis investigates the factors causing Mn²⁺ ...
Design of a residential air source heat pump for extremely cold climates
(2023-05-01)
Air source heat pumps are energy efficient systems suitable for space heating applications, however, their performance drastically degrades in low ambient temperatures. An innovative design is proposed in this thesis that ...
Efficient design of reconfigurable intelligent surface assisted multi-group multicast beamforming
(2023-09-01)
This thesis considers a multi-group multicasting scenario facilitated by a reconfigurable intelligent surface (RIS). We propose low-complexity scalable algorithms for the joint design of the base station (BS) multicast ...
Experimental investigation of dark fermentation of poplar leaves for biohydrogen production
(2023-08-01)
Biohydrogen, a sustainable and environmentally friendly energy alternative, is pivotal in transitioning to a more energy-efficient future. Thesis research explores the variations of H2 hydrogen production potential of ...
A hybrid battery cell voltage equalizer considering thermal behavior and capacity fade characteristics
(2023-08-01)
The thesis focuses on developing a robust, high-fidelity lithium-ion battery model adaptive to changes in operating temperature, aiming for accurate estimation of state of health (SOH). The thesis proposes two novel methods ...
Analysis and techniques of cyberattack types classification in smart grids
(2023-09-01)
The smart electric grids rely on integrating the information and communication technologies (ICT) into the electric power grid infrastructure to facilitate the exchange of information for an enhanced and economic operation. ...
Optimizing electrocardiogram analysis for efficient heart condition diagnosis
(2023-09-01)
This thesis introduces an innovative lead grouping strategy for efficient real-time Electrocardiography signal classification. This method uses a maximum of six leads instead of the traditional 12-lead approach, leading ...
Experimental investigation of novel proton exchange membrane fuel cell and battery integrated system
(2023-08-01)
In this thesis study, a PEM fuel cell and battery integrated system is developed. The performance assessments of the PEM fuel cell stack are performed through the polarization curve, energy efficiency, exergy efficiency, ...