Analiza iskorištavanja toplinske energije mora za primjenu dizalica topline u javnim zgradama cresko-lošinjskog arhipelaga

undergraduate thesis

• Title (english): Analysis of sea thermal potential for the application of heat pumps in the public buildings of the Cres-Lošinj archipelago
• Author: Petar Maruševec
• Mentor: Goran Krajačić (mentor)
• Committee member: Vladimir Soldo (predsjednik povjerenstva)
• Committee member: Milan Vujanović (član povjerenstva)
• Committee member: Saša Mudrinić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2020-02-27, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Process Energy Engineering

Abstract

Otoci, kao izolirani sustavi, pod velikom su prijetnjom posljedica klimatskih promjena. Nadalje, zbog svoje izoliranosti otoci su još uvelike ovisni o uvozu energije s kopna. Zbog navedenih razloga različitim se inicijativama pokušava potaknuti otočne zajednice, uprave i lokalno stanovništvo na primjenu obnovljivih izvora energije i novih integriranih rješenja pomoću kojih bi se iskorištavali prirodni resursi na otočnim područjima. Stoga su Gradovi Cres i Mali Lošinj, kao predstavnici Cresko – lošinjskog arhipelaga, potpisnici Deklaracije o „Čistoj energiji za EU otoke“ čime su se obvezali provoditi akcije koje potiču održivi razvoj i vode do potpune dekarbonizacije otočnih područja. Cilj ovog rada je prikazati potencijal toplinske energije mora, potencijal za primjenu toplinske energije mora za ugradnju dizalica topline morska voda – voda u javne zgrade cresko – lošinjskog arhipelaga. U prvom djelu rada, uz kratak uvod, prikazana je termodinamička pozadina rada dizalica topline, njihov princip rada, morska voda kao toplinski izvor/ponor, izvedba i zahvat morske vode te su navedeni primjeri korištenja dizalica topline na obali Jadranskog mora. Zatim slijedi dio rada u kojem se identificiraju objekti na području cresko – lošinjskog arhipelaga koji su pogodni za ugradnju dizalica topline. Nadalje, u radu si prikazani proračuni prema normama HRN EN 12831:2003 i HRN EN ISO 13790, prema kojima su izračunate vrijednosti toplinskog opterećenja i potrebne godišnje toplinske energije za grijanje odabranih objekata. Proračun hlađenja za odabrane objekte je proveden pojednostavljeno uz navedene razloge u točki rada koji se odnosi na hlađenje. Na samom kraju rada provedena je tehno-ekonomska analiza ugradnje dizalica topline u odabrane objekte, prikazane su usporedbe postojećeg stanja i scenarija ugradnje dizalica topline preko ušteda u energiji i emisiji CO2.

Abstract (english)

Climate change present a great threat to islands due to their remoteness. Furthermore, these isolated energy systems still heavily depend on imported electricity from the mainland. Therefore, various initiatives serve to encourage island communities, municipalities and the local population to use renewable energy and new integrated solutions for the management of the islands´ natural resources. Both the cities Cres and Mali Lošinj and the representatives of the Cres-Lošinj archipelago have signed the Political Declaration on Clean Energy for EU Islands, committing to promote sustainable development and to lead the decarbonisation of the islands´ power sector. The main aim of this paper is to illustrate the potential of the ocean thermal energy and nit's a possible application for the installation of saltwater heating pumps in public buildings of the Cres-Lošinj Archipelago. In the first part of the paper, the thermodynamic laws behind the heat pumps, their operating principle and design are being discussed. Seawater as a heat source-sink and the intake of seawater are being outlined in this part of the paper. Heat pumps that are already being used on the Adriatic coast are also explored. In the second part of the paper, the facilities suitable for the installation of heat pumps in the Cres-Lošinj archipelago are discussed. Calculations of thermal load and annual heating energy demand were made according to the standards HRN EN 12831:2003 and HRN EN ISO 13790. Calculations of cooling load for the selected buildings was simplified for the reasons stated in part of the paper related to refrigeration. Last but not least, a techno-economic analysis of the heat pumps installation was carried out. Additionally, a comparison was drawn between the current situation and possible scenarios of heat pump installation that include saving energy and reduced CO2 emissions.

• Keywords: energetsko planiranje; Cresko – lošinjski arhipelag; plava energija; dizalice topline
• Keywords (english): energy planning; Cres-Lošinj archipelago; blue energy; heat pumps
• Language: croatian
• URN:NBN: urn:nbn:hr:235:537362
• 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: 2020-02-25 17:12:22