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Comparison of Space Cooling Systems from Energy and Economic Perspectives for a Future City District in Sweden
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology.ORCID iD: 0000-0003-1832-9827
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology.ORCID iD: 0000-0001-9076-0801
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology.ORCID iD: 0000-0002-4007-3074
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology.ORCID iD: 0000-0003-3138-5508
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2023 (English)In: Energies, E-ISSN 1996-1073, Vol. 16, no 9, article id 3852Article in journal (Refereed) Published
Abstract [en]

In this study, the performance of different cooling technologies from energy and economicperspectives were evaluated for six different prototype residential Nearly Zero Energy Buildings(NZEBs) within a planned future city district in central Sweden. This was carried out by assessingthe primary energy number and life cycle cost analysis (LCCA) for each building model and coolingtechnology. Projected future climate file representing the 2050s (mid-term future) was employed.Three cooling technologies (district cooling, compression chillers coupled/uncoupled with photovoltaic (PV) systems, and absorption chillers) were evaluated. Based on the results obtained fromprimary energy number and LCCA, compression chillers with PV systems appeared to be favorableas this technology depicted the least value for primary energy use and LCCA. Compared to compression chillers alone, the primary energy number and the life cycle cost were reduced by 13%, onaverage. Moreover, the district cooling system was found to be an agreeable choice for buildingswith large floor areas from an economic perspective. Apart from these, absorption chillers, utilizingenvironmentally sustainable district heating, displayed the highest primary energy use and life cycle cost which made them the least favorable choice. However, the reoccurring operational cost fromthe LCCA was about 60 and 50% of the total life cycle cost for district cooling and absorption chillers,respectively, while this value corresponds to 80% for the compression chillers, showing the high netpresent value for this technology but sensitive to future electricity prices.

Place, publisher, year, edition, pages
MDPI , 2023. Vol. 16, no 9, article id 3852
Keywords [en]
nearly zero energy building (NZEB), primary energy number, district cooling, absorption and compression chillers, life cycle cost analysis, climate-resilient buildings
National Category
Energy Systems
Research subject
Sustainable Urban Development
Identifiers
URN: urn:nbn:se:hig:diva-41711DOI: 10.3390/en16093852ISI: 000987062500001Scopus ID: 2-s2.0-85159329094OAI: oai:DiVA.org:hig-41711DiVA, id: diva2:1753847
Funder
Swedish Energy Agency, 48296-1Swedish Energy Agency, 2019-003410Available from: 2023-04-30 Created: 2023-04-30 Last updated: 2023-11-23Bibliographically approved

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Sayadi, SanaAkander, JanHayati, AbolfazlGustafsson, MattiasCehlin, Mathias

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