Numerical modelling and material assessment in thermal energy storage systems

Student thesis: Doctoral Thesis

Abstract

The world is embarking into a fossil fuel free environment in which the predominant sources will be renewable and sustainable energies. Since renewable energy is usually associated with their intermittent nature, it is important to always have a backup source of energy in times of need and demand. For this, energy storage is an essential component of any renewable energy system. In times of high demand, where the sun is not shining and the wind is not blowing, the existence of a backup energy supply with easy and fast access is necessary. Thus, Thermal Energy Storage (TES) is one of the proposed solutions to aid in this mismatch in consumption and demand caused by the nature of the green technologies (Ali et al., 2020).
TES can be an accompaniment of systems such as a Joule-Brayton cycle, Rankine cycle, a heat pump or even solar collectors. Other applications include systems which focus on heat waste recovery, steam generation for turbines, domestic uses and household heating. Energy from TES can be stored daily, monthly or seasonally. This determines the type and size of the system and whether it is a smaller scale domestic or large scale industrial project (Fang et al., 2017). In all cases, however, its main potential to serve as a tool that saves energy and mitigates climate change, keeping COemissions minimized, and helping countries meet their established environmental goals. Low grade TES is in increasing importance and therefore remains the focus of this thesis
Date of AwardMar 2021
Original languageEnglish
SupervisorJovana Radulovic (Supervisor), Victor Becerra (Supervisor), James Buick (Supervisor) & Branislav Vuksanovic (Supervisor)

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