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Integration of Supermarket’s CO2 Refrigeration System and Geothermal Storage
KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.ORCID-id: 0000-0002-2895-774X
ISTENER Research Group, Department of Mechanical Engineering and Construction, Universitat Jaume I, Campus de Riu Sec s/n, E12071 Castelló de la Plana, Spain .ORCID-id: 0000-0003-3404-6755
Energi & Kylanalys AB, Varuvägen 9, Älvsjö 125 30, Sweden . (Energi & Kylanalys)
KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.
2019 (engelsk)Konferansepaper, Oral presentation with published abstract (Fagfellevurdert)
Abstract [en]

This paper investigates the energy efficiency of geothermal storage integration into the state-of-the-art CO2 trans-critical booster systems. Three scenarios of integration are studied including stand-alone and integrated supermarket building systems.

The results show that for a stand-alone supermarket, heat recovery from the CO2 system should be prioritized over extracting heat from the ground, which this heat extraction can be done either by an extra evaporator in the CO2 system or by a separate ground source heat pump. In the case of supermarket integration with a nearby district heating consumer, geothermal storage integration with extra evaporator in the CO2 refrigeration system can reduce the total annual running cost of the two buildings by 19-31% and with a payback time of less than three years.

This integration is beneficial if the full efficient heat recovery capacity of the CO2 system is not sufficient to provide the entire demands.

sted, utgiver, år, opplag, sider
Montreal, Canada: International Institute of Refrigeration, 2019.
Emneord [en]
state-of-the-art CO2 trans-critical booster system, Supermarket, Geothermal storage
HSV kategori
Forskningsprogram
Energiteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-257895DOI: 10.18462/iir.icr.2019.570OAI: oai:DiVA.org:kth-257895DiVA, id: diva2:1349319
Konferanse
25th IIR International Congress of Refrigeration, August 24-30, 2019, Montreal
Merknad

QC 20190909

Tilgjengelig fra: 2019-09-08 Laget: 2019-09-08 Sist oppdatert: 2019-12-20bibliografisk kontrollert

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