LAPSE:2023.35789
Published Article

LAPSE:2023.35789
Comparison of Space Cooling Systems from Energy and Economic Perspectives for a Future City District in Sweden
May 23, 2023
In this study, the performance of different cooling technologies from energy and economic perspectives 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 assessing the primary energy number and life cycle cost analysis (LCCA) for each building model and cooling technology. 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 from primary energy number and LCCA, compression chillers with PV systems appeared to be favorable as 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%, on average. Moreover, the district cooling system was found to be an agreeable choice for buildings with large floor areas from an economic perspective. Apart from these, absorption chillers, utilizing environmentally 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 from the 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 net present value for this technology but sensitive to future electricity prices.
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Keywords
absorption and compression chillers, climate-resilient buildings, district cooling, life cycle cost analysis, nearly zero energy building (NZEB), primary energy number
Subject
Suggested Citation
Sayadi S, Akander J, Hayati A, Gustafsson M, Cehlin M. Comparison of Space Cooling Systems from Energy and Economic Perspectives for a Future City District in Sweden. (2023). LAPSE:2023.35789
Author Affiliations
Sayadi S: Department of Building Engineering, Energy Systems and Sustainability Science, Faculty of Engineering and Sustainable Development, University of Gävle, 801 76 Gävle, Sweden [ORCID]
Akander J: Department of Building Engineering, Energy Systems and Sustainability Science, Faculty of Engineering and Sustainable Development, University of Gävle, 801 76 Gävle, Sweden [ORCID]
Hayati A: Department of Building Engineering, Energy Systems and Sustainability Science, Faculty of Engineering and Sustainable Development, University of Gävle, 801 76 Gävle, Sweden [ORCID]
Gustafsson M: Department of Building Engineering, Energy Systems and Sustainability Science, Faculty of Engineering and Sustainable Development, University of Gävle, 801 76 Gävle, Sweden [ORCID]
Cehlin M: Department of Building Engineering, Energy Systems and Sustainability Science, Faculty of Engineering and Sustainable Development, University of Gävle, 801 76 Gävle, Sweden [ORCID]
Akander J: Department of Building Engineering, Energy Systems and Sustainability Science, Faculty of Engineering and Sustainable Development, University of Gävle, 801 76 Gävle, Sweden [ORCID]
Hayati A: Department of Building Engineering, Energy Systems and Sustainability Science, Faculty of Engineering and Sustainable Development, University of Gävle, 801 76 Gävle, Sweden [ORCID]
Gustafsson M: Department of Building Engineering, Energy Systems and Sustainability Science, Faculty of Engineering and Sustainable Development, University of Gävle, 801 76 Gävle, Sweden [ORCID]
Cehlin M: Department of Building Engineering, Energy Systems and Sustainability Science, Faculty of Engineering and Sustainable Development, University of Gävle, 801 76 Gävle, Sweden [ORCID]
Journal Name
Energies
Volume
16
Issue
9
First Page
3852
Year
2023
Publication Date
2023-04-30
Published Version
ISSN
1996-1073
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Original Submission
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PII: en16093852, Publication Type: Journal Article
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Published Article

LAPSE:2023.35789
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doi:10.3390/en16093852
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[v1] (Original Submission)
May 23, 2023
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May 23, 2023
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https://psecommunity.org/LAPSE:2023.35789
Original Submitter
Calvin Tsay
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