Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Energy efficiency in industrial facilities - Improvements on energy transformation and data analysis
During these years of my Ph.D. studies the main aim of the research work was to improve the efficiency on energy generation into industrial facilities. Novelties are proposed both on the devices used for energy generation and on energy consumption data analytics. In the first part of the thesis, Solid Oxide Fuel Cell (SOFC) and Reversible Solid Oxide Cell (RSOC) are proposed: these technologies have many advantages such as high efficiency on energy generation, heat available at high temperature, and modularity. A new heat recovery for a modular micro-cogeneration system based on SOFC is presented with the main goal of improving the efficiency of an air source heat pump with unused heat of fuel cell exhausted gases. The novelty of the system proposed is that exhaust gases after the fuel cell are firstly used to heat water and/or used to produce steam, then they are mixed with the external air to feed the evaporator of the heat pump with the aim of increasing energy efficiency of the latter. This system configuration decreases the possibility of freezing of the evaporator as well, which is one of the drawbacks for air source heat pump in climates where temperature close to 0 °C and high humidity could occur. Results show that the performance of the air source heat pump increases considerably during cold season for climates with high relative humidity and for users with high electric power demand. As previously cited, not only SOFC but also RSOC are deeply analysed in the thesis to define innovative energy generation system with the possibility of varying H/P ratio to match energy generation and demand in order to avoid mismatching and, consequently, integration system with a lower system. The aim is to define a modular system where each RSOC module can be switched between energy generation mode (fuel consumption to produce electricity and heat) and energy consumption (electricity and heat are consumed to produce hydrogen, working as Solid Oxide Electrolysis Cells) to vary overall H/P of the overall system. ...
Energy efficiency in industrial facilities - Improvements on energy transformation and data analysis
During these years of my Ph.D. studies the main aim of the research work was to improve the efficiency on energy generation into industrial facilities. Novelties are proposed both on the devices used for energy generation and on energy consumption data analytics. In the first part of the thesis, Solid Oxide Fuel Cell (SOFC) and Reversible Solid Oxide Cell (RSOC) are proposed: these technologies have many advantages such as high efficiency on energy generation, heat available at high temperature, and modularity. A new heat recovery for a modular micro-cogeneration system based on SOFC is presented with the main goal of improving the efficiency of an air source heat pump with unused heat of fuel cell exhausted gases. The novelty of the system proposed is that exhaust gases after the fuel cell are firstly used to heat water and/or used to produce steam, then they are mixed with the external air to feed the evaporator of the heat pump with the aim of increasing energy efficiency of the latter. This system configuration decreases the possibility of freezing of the evaporator as well, which is one of the drawbacks for air source heat pump in climates where temperature close to 0 °C and high humidity could occur. Results show that the performance of the air source heat pump increases considerably during cold season for climates with high relative humidity and for users with high electric power demand. As previously cited, not only SOFC but also RSOC are deeply analysed in the thesis to define innovative energy generation system with the possibility of varying H/P ratio to match energy generation and demand in order to avoid mismatching and, consequently, integration system with a lower system. The aim is to define a modular system where each RSOC module can be switched between energy generation mode (fuel consumption to produce electricity and heat) and energy consumption (electricity and heat are consumed to produce hydrogen, working as Solid Oxide Electrolysis Cells) to vary overall H/P of the overall system. ...
Energy efficiency in industrial facilities - Improvements on energy transformation and data analysis
Vialetto, Giulio (Autor:in) / Vialetto, Giulio / Noro, Marco / Rossetto, Luisa
01.11.2019
Hochschulschrift
Elektronische Ressource
Englisch
DDC:
690
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