A thermo-economic and emissions analysis of different sanitary-water heating units embedded within fourth-generation district-heating systems

Poredoš, Primož (avtor), Vidrih, Boris (avtor), Kitanovski, Andrej (avtor), Poredoš, Alojz (avtor)

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
• UDK: 621.577(045)
• ISSN pri članku: 0195-0738
• DOI: 10.1115/1.4040102
• COBISS.SI-ID: 16164123

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

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

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