Pregled bibliografske jedinice broj: 1269365
Preliminary design of the retrofitted district heating system using heat pumps with CO2 and NH3 refrigerants
Preliminary design of the retrofitted district heating system using heat pumps with CO2 and NH3 refrigerants // 10th Conference on Ammonia and CO2 Refrigeration Technologies - Proceedings / Ciconkov, Risto (ur.).
Ohrid: University "Ss. Cyril / Methodius", Faculty of Mechanical Engineering - Skopje, 2023. str. 123-130 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 1269365 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Preliminary design of the retrofitted district
heating system using heat pumps with CO2 and NH3
refrigerants
Autori
Požgaj, Damir ; Pavković, Branimir ; Delač, Boris ; Glažar, Vladimir
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
10th Conference on Ammonia and CO2 Refrigeration Technologies - Proceedings
/ Ciconkov, Risto - Ohrid : University "Ss. Cyril / Methodius", Faculty of Mechanical Engineering - Skopje, 2023, 123-130
ISBN
978-2-36215-054-8
Skup
10th Conference on Ammonia and CO2 Refrigeration Technologies
Mjesto i datum
Ohrid, Sjeverna Makedonija, 27.04.2023. - 29.04.2023
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
District heating, Heat pumps, Natural refrigerants, COP
Sažetak
The use of heat pumps with natural refrigerants in existing district heating systems is a recognized technology that leads to a low-carbon transition and a reduction in the use of fossil fuels. This paper presents a preliminary design for the renovation of the existing district heating system using heat pumps with natural refrigerants CO2 and NH3. The city of Rijeka has several decentralized district heating systems, and one of the systems considered in this case study produces heating energy and domestic hot water using natural gas- fired hot water boilers. The dynamic model of the district heating system, which includes the building simulation, the distribution network, and the energy generation subsystem, was used to investigate alternatives for retrofitting the thermal energy production subsystem. The aim of the present study is to evaluate the required operating temperature, to adapt the whole system for the use of heat pumps and to compare heat pumps with natural refrigerants and those with HFO and HFC refrigerants.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo
POVEZANOST RADA
Projekti:
NadSve-Sveučilište u Rijeci-uniri-tehnic-18-14 - Optimizacija dizalica topline i rashladnih sustava koji koriste radne tvari niskog utjecaja na globalno zatopljenje korištenjem numeričkih simulacija (Pavković, Branimir, NadSve - NATJEČAJ „UNIRI PROJEKTI“ Natječaj za dodjelu sredstava potpore znanstvenim istraživanjima na Sveučilištu u Rijeci za 2018. godinu - projekti iskusnih znanstvenika i umjetnika od 03. 09. 2018.) ( CroRIS)
Ustanove:
Tehnički fakultet, Rijeka
