Tehno-ekonomska analiza hibridnog postrojenja reverzibilne hidroelektrane, plutajuće fotonaponske elektrane i desalinizacijskog postrojenja na otoku

undergraduate thesis

• Title (english): Techno-economic analysis of a hybrid pumped hydro-floating solar-desalination unit system on the island basis
• Author: Ven Rajlić
• Mentor: Goran Krajačić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2023-02-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Process Energy Engineering

Abstract

U ovome je radu cilj prikazati i objasniti jednostavnu tehno-ekonomsku analizu hibridnog postrojenja plutajuće fotonaponske elektrane, sustava desalinizacije i reverzibilne hidroelektrane. Rijetko koji otok danas ima dovoljne izvore pitke vode koji bi zadovoljili potrebe stanovništva, a pogotovo je značajan dodatni utjecaj povišene potrošnje resursa zbog turističke sezone. U cilju rješavanja ovog problema, razmatran je sustav desalinizacije koji bi zamijenio dosadašnje uvoze pitke vode njenom proizvodnjom, a na otocima koji imaju vlastite izvore pitke vode, desalinizacijsko postrojenje doprinosi dodatnoj sigurnosti od prekomjernog iskorištavanja dostupnih izvora. Potrebna energija za proces desalinizacije osiguravala bi se iz sunčeve energije posredstvom plutajuće fotonaponske elektrane koja se kao tehnologija ubrzano razvija i sve više dobiva na značaju. Sustav reverzibilne hidroelektrane se u okviru ovog zadatka razmatrao kao zasebni sustav zbog pojednostavljenja tehno-ekonomske analize iako se u stvarnosti mora razmatrati kao zajednički sustav koji može pružati dodatnu fleksibilnost. Kao najpogodniji otok za primjenu tri promatrana sustava odabran je otok Cres. Zbog svojeg prirodnog izvora vode, Vranskog jezera, kojim se opsrkbljuje cijeli arhipelag Cres-Lošinj, promatran je slučaj nadopunjavanja jezera desaliniziranom vodom kako bi se spriječilo prekomjerno crpljenje u budućnosti i mogući rizik zaslanjivanja jedinog izvora pitke vode na promatranom arhipelagu. Vransko je jezero, zbog svog geografskog položaja i velike površine, idealno za postavljanje plutajuće fotonaponske elektrane te će također, u ovome radu, služiti kao donje akumulacijsko jezero reverzibilne hidroelektrane. Rezultati analize pokazuju isplativost ovog projekta u ekonomskom i u smislu energetskog razvoja otoka.

Abstract (english)

The goal of this work is to present and explain a simple techno-economic analysis of a hybrid plant consisting of a floating photovoltaic power plant, a desalination system and a pumped hydro storage plant. It is rare that an island today has sufficient sources of drinking water to meet the needs of the population, especially the additional imapct of increased consumption of the resources due to the tourist season. With the aim of solving this problem, a desalination system was considered, which would replace the current imports of drinking water with its produciton, and on the islands that have their own sources of drinking water, as a guarantee that there would be no excessive pumping of said sources. The necessary energy for desalination would be provided from the solar energy, by means of a photovoltaic power plant, which as a technology is rapidly developing and gaining more importance. Pumped hydro storage plant was considered as a separate system in this task due to the simplification of the techno-economic analysis, although in reality it must be considered as a joint system that can provide additional flexibility. The island of Cres was chosen as the most suitable island for the application of the three observed systems. Due to its natural source of water in the form of lake Vrana, which supplies the entire Cres-Lošinj archipelago, a case of refilling the lake with desalinated water was observed in order to prevent excessive pumping in the future and the risk of salinization of the only source of drinking water on the observed archipelago. Vrana lake, due to its geographical location and large surface area, is ideal for setting up a floating photovoltaic power plant and will also, in this work, serve as the lower storage lake of a pumped hydro storage plant. The results of the analysis show the profitability of this project in terms of economic and energy development of the island.

• Keywords: Desalinizacija; plutajuće solarne elektrane; reverzibilne hidroelektrane; hibridno postrojenje; otok Cres
• Keywords (english): Desalination; floating photovoltaic power plant; pumped hydro storage; hybrid system operation; island Cres
• Language: croatian
• URN:NBN: urn:nbn:hr:235:386509
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-02-22 17:16:14