Enhanced geothermal system energy projects evaluation model based on multi-criteria decision-making

doctoral thesis

• Title (croatian): Model za procjenu energetskih projekata naprednih geotermalnih sustava temeljen na višekriterijskom odlučivanju
• Author: Sara Raos
• Mentor: Ivan Rajšl (mentor)
• Committee member: Željko Tomšić (predsjednik povjerenstva)
• Committee member: Siniša Šadek (član povjerenstva)
• Committee member: Robert Pašičko (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Energy and Power Systems); Zagreb
• Defense date and country: 2023-11-27, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

The topic of the dissertation is the evaluation of Enhanced Geothermal Systems (EGS). The focus is on the development of a concept, a methodology and finally the evaluation model that aims to promote a greater penetration of geothermal energy as one of the renewable energy sources by supporting various interested parties in this field.
As a prerequisite for the development of methodology and model, this thesis identifies and describes in detail the most important influencing factors that should be considered when analysing and evaluating geothermal projects. These factors are divided into several categories: technical, economic, social and environmental factors. In addition, the methodology presented in this thesis incorporates the concept of multi-criteria decision making (MCDM), which accurately reflects the possibility of supporting interested investors in comparing different locations and ways of exploiting geothermal energy and ultimately making the optimal investment decision. In the last part of the dissertation, this methodology was implemented in an evaluation model, which was also the basis for the developed decision support tool in MATLAB software. With the help of this evaluation model, it is possible to choose the best location and the best method for the utilization of geothermal energy on the one hand and the best integration of the EGS project into the electricity system and/or the district heating system on the other hand.
The achieved scientific contributions of the research presented in this dissertation are:
1. Method for standardized evaluation of influencing criteria related to investments in enhanced geothermal system energy projects,
2. An integrated weighting and ranking multi-criteria decision-making methodology for the evaluation and comparison of different options for the transformation of geothermal energy into electricity and heat and
3. Model for the evaluation and comparison of different geothermal sites, regarding electricity and heat production, based on multi-criteria decision-making.

Abstract (croatian)

Tema disertacije je evaluacija naprednih geotermalnih sustava (eng. Enhanced Geothermal Systems, EGS). Fokus je na razvoju koncepta, metodologije i konačnog modela za procjenu koji ima za cilj promicanje veće penetracije geotermalne energije kao jednog od obnovljivih izvora energije podržavajući različite zainteresirane strane u ovom području. Kao preduvjet za razvoj metodologije i modela, ova teza identificira i detaljno opisuje najvažnije čimbenike koji utječu na realizaciju, a koji bi se trebali uzeti u obzir prilikom analize i evaluacije geotermalnih projekata. Ti čimbenici se dijele u nekoliko kategorija: tehnički, ekonomski, socijalni i okolišni faktori. Nadalje, metodologija predstavljena u ovoj tezi uključuje koncept višekriterijskog odlučivanja (eng. Multi-criteria decision-making, MCDM), što precizno odražava mogućnost podrške zainteresiranim investitorima pri usporedbi različitih lokacija i načina iskorištavanja geotermalne energije te naposljetku pri donošenju optimalne investicijske odluke. U posljednjem dijelu disertacije, ova metodologija je implementirana u model za procjenu EGS projekata, koji je također osnova za razvijanje alata za potporu odlučivanju u MATLAB softveru. Uz pomoć ovog evaluacijskog modela moguće je odabrati najbolju lokaciju i najbolji način za iskorištavanje geotermalne energije s jedne strane, te najbolju integraciju EGS projekta u elektroenergetski sustav i/ili sustav daljinskog grijanja. Postignuti znanstveni doprinosi istraživanja predstavljenog u ovoj disertaciji su:
1. Metoda za standardizirano vrednovanje utjecajnih čimbenika pri odlučivanju o investicijama u projekte poboljšanih geotermalnih sustava,
2. Integrirana metodologija višekriterijskog odlučivanja temeljena na metodama ponderiranja i rangiranja za procjenu i usporedbu različitih opcija transformacije geotermalne energije u električnu i toplinsku energiju te
3. Model za procjenu i usporedbu različitih geotermalnih lokacija za proizvodnju električne i toplinske energije na temelju višekriterijskog odlučivanja.

• Keywords: Deep Geothermal Energy; Enhanced Geothermal Systems; Multi-Criteria Decision-Making; Comprehensive Evaluation Model
• Keywords (croatian): Duboka geotermalna energija; Poboljšani geotermalni sustavi (eng. Enhanced Geothermal Systems; EGS); Metode višekriterijskog odlučivanja; Sveobuhvatni evaluacijski model
• Language: english
• URN:NBN: urn:nbn:hr:168:286015
• Promotion: 2023
• Study programme: Title: Doctoral study programme "Electrical Engineering and Computing"; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
• Type of resource: Text
• Extent: 333 str. : graf. prikazi u boji ; 30 cm
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-05-10 12:42:08