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A thermo-economic and emissions analysis of different sanitary-water heating units embedded within fourth-generation district-heating systems
ID Poredoš, Primož (Avtor), ID Vidrih, Boris (Avtor), ID Kitanovski, Andrej (Avtor), ID Poredoš, Alojz (Avtor)

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Izvleček
This paper presents the results of a thermo-economic (TE), primary-energy-factor and CO2-equivalent (CO2 (eq)), emissions-sensitivity analysis for the preparation of sanitary hot water (SHW) in fourth-generation district-heating systems. The annual required additional heat for the SHW provided by a local heating unit, based on an air-to-water heat pump (AWHP), a natural-gas boiler (NG boiler), and an electrical resistance heater (ERH), was determined using a trnsys simulation. Additionally, the seasonal performance factor (SPF) of the HP under consideration was determined. The study considered three possible supply temperatures, i.e., 35, 40, and 45 °C. The results show that a local heating unit based on an AWHP is most efficient in terms of the used primary energy (PE) and CO2 (eq) emissions. This unit is also the second best in terms of TE performance. The unit based on a NG boiler is much more appropriate than an ERH unit in terms of both the primary energy factor (PEF) and the CO2 (eq) emission factors for an electricity generation mix (EGM) that has values higher than the average for the EU-28. The heat generated by this NG unit is also cheaper than the heat produced by an ERH based on the average price for electricity in the EU-28.

Jezik:Angleški jezik
Ključne besede:thermo-economic analysis, primary energy factor, emission analysis, district heating, simulations, heat pumps, emissions, energy systems analysis, heat energy generation, natural gas technology, fossil fuel, combustion
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Status publikacije:Objavljeno
Različica publikacije:Recenzirani rokopis
Leto izida:2018
Št. strani:Str. 122003-1-122003-8
Številčenje:Vol. 140, iss. 12
PID:20.500.12556/RUL-125699 Povezava se odpre v novem oknu
UDK:621.577(045)
ISSN pri članku:0195-0738
DOI:10.1115/1.4040102 Povezava se odpre v novem oknu
COBISS.SI-ID:16164123 Povezava se odpre v novem oknu
Avtorske pravice:
ASME ©
Opomba:
"Permission is granted for the deposit of the Accepted Manuscript of the paper in the University of Ljubljana institutional repository."
Datum objave v RUL:02.04.2021
Število ogledov:1674
Število prenosov:431
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Gradivo je del revije

Naslov:Journal of energy resources technology
Skrajšan naslov:J. energy resour. technol.
Založnik:American Society of Mechanical Engineers
ISSN:0195-0738
COBISS.SI-ID:6870277 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:02.04.2021

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:termo-ekonomska analiza, faktor primarne energije, emisijska analiza, daljinsko ogrevanje, simulacije, toplotne črpalke, emisije, analiza energetskih sistemov, proizvodnja toplotne energije, tehnologija zemeljskega plina, fosilna goriva, zgorevanje

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0223
Naslov:Prenos toplote in snovi

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