Projekt visokotemperaturne dizalice topline na otpadnu toplinu

undergraduate thesis

• Title (english): The project of a high-temperature heat pump using waste heat
• Author: Andre Biloglav
• Mentor: Vladimir Soldo (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2025-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Process Energy Engineering

Abstract

U radu je napravljen pregled literature te su prikazane dostupne tehnologije korištenja otpadnih voda kao izvora topline za dizalice topline. Također, raspravljeni su osnovni izazovi u implementaciji ovog obnovljivog tipa energije u praksi.
Za stvarne podatke o protocima i temperaturama otpadnih voda na izlazu iz Centralnog pročistača otpadnih voda grada Zagreba razvijen je cjelogodišnji model rada dizalice topline otpadna voda – voda s priključkom na daljinski sustav grijanja četvrte generacije. Rezultati proračuna pokazali su da bi se korištenjem otpadnih voda kao toplinskog spremnika za dizalice topline moglo grijati približno 50 000 stanova/kućanstava u Zagrebu. Ta brojka nikako nije zanemariva i potvrđuje da otpadne vode kriju značajan toplinski potencijal kad bi se koristile u sustavu s dizalicama topline. Upotreba takvog sustava doprinijela bi i do uštede primarne energije za visoki iznos od približno 67 % i do smanjenja emisija ugljikovog dioksida približno 78 % u usporedbi s grijanjem putem toplane.

Abstract (english)

The paper provides a review of the literature and presents the available technologies for utilizing wastewater as a heat source for heat pumps. Additionally, it discusses the main challenges in implementing this renewable energy type in practice.
A year-round operational model of a wastewater-to-water heat pump system, connected to a fourth-generation district heating network, was developed based on real data on flow rates and temperatures of wastewater at the outlet of the Central Wastewater Treatment Plant in Zagreb. The calculation results indicate that using wastewater as a thermal reservoir for heat pumps could provide heating for approximately 50 000 apartments/households in Zagreb. This figure is significant and confirms that wastewater holds substantial thermal potential when integrated with heat pump systems. The implementation of such system would contribute to significant primary energy savings of approximately 67% and reduction in carbon dioxide emissions by around 78% compared to heating via thermal power plant.

• Keywords: energetska tranzicija; obnovljive tehnologije s dizalicama topline; energetski potencijal otpadnih voda
• Keywords (english): energy transition; renewable technologies with heat pumps; energy potential of wastewater
• Language: croatian
• URN:NBN: urn:nbn:hr:235:209477
• 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: Embargoed access; Embargo expiration date: 2027-02-25
• Created on: 2025-02-24 15:00:30