000132338 001__ 132338 000132338 005__ 20240304103150.0 000132338 037__ $$aTESIS-2024-055 000132338 041__ $$aeng 000132338 1001_ $$aGuanabara Keler Gesteira, Luis Gabriel 000132338 24500 $$aDesign and optimization of polygeneration systems for small buildings 000132338 260__ $$aZaragoza$$bUniversidad de Zaragoza, Prensas de la Universidad$$c2023 000132338 300__ $$a202 000132338 4900_ $$aTesis de la Universidad de Zaragoza$$v2024-52$$x2254-7606 000132338 500__ $$aPresentado: 06 10 2023 000132338 502__ $$aTesis-Univ. Zaragoza, , 2023$$bZaragoza, Universidad de Zaragoza$$c2023 000132338 506__ $$aby-nc$$bCreative Commons$$c3.0$$uhttp://creativecommons.org/licenses/by-nc/3.0/es 000132338 520__ $$aThis Ph.D. thesis comprises two main parts: the estimation of energy and water demands for residential buildings and the development of innovative solar-based polygeneration systems for small buildings. A systemic methodology was employed to address this challenge, beginning with an analysis of the building's<br />energy behavior, followed by the design of an appropriate polygeneration facility, and finally, optimizing its energy efficiency, economic feasibility, and environmental impact for the specific building.<br />The case study consisted of a set of representative buildings, combining different building types, energy codes, and climate zones within Spain. A generic pattern for electricity, heating, cooling, domestic hot water, and freshwater consumption was determined through simulations using multiple tools to generate these demands. Consequently, all demand profiles were displayed with an hourly resolution over a year. Furthermore, thermal comfort analysis was performed to validate thermal requirements.<br />The design of a residential polygeneration system is based on novel configurations, as it includes several technologies that have been minimally explored in the existing literature and are not typically integrated into<br />polygeneration schemes. These systems manage the production of thermal and electrical energy to satisfy the five demands of a residential building while considering the capacities of thermal and electrical storage. In particular, the leading technologies used in the systems include photovoltaic/thermal collectors, reverse osmosis, lead-acid battery, thermoelectric generators, and desiccant air conditioning. The polygeneration plant supplies electricity, space heating and cooling, domestic hot water, and freshwater for residential applications.<br />Photovoltaic/thermal collectors, used for both electricity and heating production, were incorporated into all system layouts.<br />In the first work, the developed plant was grid-connected, consisting of a reverse osmosis device and a desiccant air conditioning system to address freshwater and cooling demands, respectively. The second investigation evaluated the prior configuration as an off-grid facility by incorporating lead-acid battery storage for electricity backup. The third system examined the previous on-grid polygeneration plant with added photovoltaic panels and a biomass boiler, offering flexibility for optimizing the usage of photovoltaic/thermal collectors. Lastly, thermoelectric generators were integrated into the previous design, along with a heat pump and a single-effect absorption chiller for space cooling, and a multi-effect distillation unit for water desalination. The first three systems were applied to a single-family townhouse, while the final configuration was implemented in a medium/large apartment block. Consequently, as the polygeneration system size increased, it became necessary to explore new technologies appropriate for higher energy demands, such as single-effect absorption chillers and multi-effect distillation units.<br />Due to the potential for integrating various technologies to match the building's demands and energy services, the TRaNsient System Simulation (TRNSYS) software was primarily employed for designing and dynamically simulating the building and polygeneration systems. Furthermore, a sensitivity analysis was carried out to investigate the systems¿ best setup. Additional design optimization was performed to ensure optimal energy efficiency, environmental impact, and economic profitability for the proposed layouts.<br />Overall, this thesis provided useful insights into the design of sustainable polygeneration systems, using the produced power and heat to match residential users¿ needs, particularly in regions facing water scarcity.<br /> 000132338 520__ $$a<br /> 000132338 521__ $$97097$$aPrograma de Doctorado en Energías Renovables y Eficiencia Energética 000132338 6531_ $$afuentes no convencionales de energía 000132338 6531_ $$aingeniería y tecnología del medio ambiente 000132338 6531_ $$atransmisión de calor en la edificación 000132338 700__ $$aUche Marcuello, Francisco Javier$$edir. 000132338 7102_ $$aUniversidad de Zaragoza$$b 000132338 830__ $$9509 000132338 8560_ $$fcdeurop@unizar.es 000132338 8564_ $$uhttps://zaguan.unizar.es/record/132338/files/TESIS-2024-055.pdf$$zTexto completo (eng) 000132338 909CO $$ooai:zaguan.unizar.es:132338$$pdriver 000132338 909co $$ptesis 000132338 9102_ $$aIngeniería y Arquitectura$$b 000132338 980__ $$aTESIS