Thermal performance enhancement of microencapsulated phase change material/geopolymer composites through graphite platelets and nano-additives for building energy storage applications

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2023-1

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Tolga , Tamer

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The demand for sustainable, low-energy buildings with minimized operating costs is increasing. Meeting this ever increasing demand while providing sufficient occupant thermal comfort is a challenge. In the recent years, solutions that try to utilize the thermal energy storage potential of the building envelope are being developed at a rapid pace. Combining the high storage capacity of micro-encapsulated phase change materials (mPCM) with high thermal conductivity waste materials lead to sustainable, low-carbon and low-cost composites. This research is intended to measure and analyze the mechanical, microstructural, and thermophysical properties of different types of mPCM incorporated geopolymer composites for building envelope applications. Several types of locally available waste materials with varying chemical compositions will be prepared with PCMs with melting point of 24℃. Furthermore, nano-SiO2, nano-TiO2, and graphite platelets were added in order to enhance the mechanical and thermal properties of the mPCM/geopolymer composites. The experiment results showed that geopolymer composites with enhanced thermal and sufficient mechanical properties were developed by incorporating nanoparticles and graphite platelets into the geopolymer matrix

Subject Keywords

Microencapsulated phase change materials, Geopolymers, Nanoseed activation, Graphite, Thermal conductivity

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https://hdl.handle.net/11511/102490

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

T. Tolga, “Thermal performance enhancement of microencapsulated phase change material/geopolymer composites through graphite platelets and nano-additives for building energy storage applications,” M.S. - Master of Science, Middle East Technical University, 2023.