Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/032F5201-6235-4F78-BE02-FDF68D711EBE | ||
| Year | 2025 | ||
| Type of Item | Diploma Work | ||
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| Bibliographic Citation | Ilias Syntrilalas, "Design and optimization of hybrid energy systems using open-source computational tools", Diploma Work, School of Production Engineering and Management, Technical University of Crete, Chania, Greece, 2025 https://doi.org/10.26233/heallink.tuc.104036 | ||
| Appears in Collections |
The objective of this thesis is to present the capabilities of two free access software related to the design, and optimization of hybrid energy systems incorporating various technologies. The first one is called REopt and focuses on site-specific system optimization within the USA. It also emphasizes the integration of renewable energy sources into the grid and resilience of the system. The second software is called nPro and concentrates on the detailed design of district-level energy systems requiring a more sophisticated network modeling. Also, this software performs a building-based approach on how to design heat networks. To understand the functionality of these tools, several (non-comparable) case studies will be conducted regarding the sustainability of the analyzed systems and the efficiency of the software tools. Overall, the thesis is developed in the form of a user manual in order to understand the basic features of the two software tools.In the first chapter, the evaluation concentrates on REopt software. A step-by-steptutorial is presented followed by three applications to emphasize the functionality of REopt. The first system is a PV-Battery-on grid; the location will be in Denver, USA, and the energy goals are cost-savings and clean energy production. The second application is a PV-Battery-CHP unit–on grid, the location will be based in San Francisco, USA and the energy goals are the same. Finally, a conclusion is made as to whether the foresaid hybrid systems minimize the life cycle cost of energy and are economically viable.In the second chapter, a thorough technoeconomic analysis will take place by nProsoftware. Unlike REopt, nPro provides users with data from different locationsthroughout the world. First, demand profiles will be demonstrated followed by district energy systems classification. Then, a step-by-step guide will take place in which all the functions of the tool are described. Finally, a case study will be presented focusing on specific hybrid systems and their economic potential.The location of the analysis will be in Chania, Greece in a specific district containing Nikolaou Skoula, Efedron Polemiston, Zimvrakakidon and Mathiou Milonogianni streets (as for all of the upcoming applications). The first three systems will focus only on their electricity demand and contain a PV-Wind-on grid system, a PV-Battery-Wind Turbines-off grid system and a Hydrogen-PV-Wind Turbines-off grid system. A comparison of them will be made recommending the optimal solution.Focusing only on heat demand with nPRO, some other systems will be analyzedincluding a Geothermal Energy-Heat storage-on grid system and a Biomass CHP unitHeat storage-on grid system. A comparison between them will follow proposing the optimal solution.Key words: REopt, nPro, techno-economic analysis, optimization, Distributed Energy Resources (DERs), photovoltaics (PV), battery, gas emissions, Combined Heat and Power (CHP), district heating and cooling (DHC), demand profiles, hydrogen, hybrid systems, energy hub, investment cost, Net Present Value (NPV).
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