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International Hellenic University (2015)

Investigation of the Performance of Solar Thermal Systems with Seasonal Storage for domestic applications

Antoniadis, Christodoulos

Titre : Investigation of the Performance of Solar Thermal Systems with Seasonal Storage for domestic applications

Auteur : Antoniadis, Christodoulos

Université de soutenance : International Hellenic University

Grade : Master of Science (MSc) in Energy Systems 2015

Résumé
The dissertation investigates the performance of Solar Thermal Systems which utilize Seasonal (long-term) Thermal Energy Storage (STES) for domestic applications. The STES concept concerns the storage of heat in large facilities during the summer period for later use during autumn and winter, when heating load is demanded. Specifically the TRNSYS software has been used in order to design and simulate such a solar thermal system with seasonal storage. Flat plate solar collectors are installed in order to collect solar energy and charge two stratified water tanks, a short term DHW tank and a long term STES tank. The last one is connected through a heat exchanger with a single zone building, contributing to the space heating when thermal energy is available. Simulation results for the city of Thessaloniki showed that up to 40.1 % of the space heating load for a specific single-family detached home can be covered by this seasonal storage configuration. With regard to the DHW performance, the solar fraction reaches 76 %.

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