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Perimeter Blocks in Nordic Towns - How latitude affect daylighting
RISE - Research Institutes of Sweden, Safety and Transport, Measurement Science and Technology. NTNU Norwegian University of Science and Technology, Norway.
NTNU Norwegian University of Science and Technology, Norway.
NTNU Norwegian University of Science and Technology, Norway.
2019 (English)In: IOP Conference Series: Earth and Environmental Science, Institute of Physics Publishing , 2019, no 1Conference paper, Published paper (Refereed)
Abstract [en]

One of the design principles for future sustainable towns is compactness. The densification of cities is very much needed, but it usually compromises the access of daylight. Densification is especially challenging in the Nordic region characterized by low angled sunlight, something that also limits daylight distribution and restricts its intensity. The higher the latitude, the greater is the difficulty in the distribution. Perimeter blocks give shelter from wind and often create semi-public courtyards which have been seen to be attractive in many Nordic settlements during history. In the present study, alternative design to the conventional perimeter blocks are explored and geometric options such as chamfered corners, strategically varied building heights and differently positioned openings in a broken perimeter block are analyzed. The yearly simulations as well as simulations for May 1st have been carried out for the same perimeter blocks located at four different latitudes (decimal coordinates): 1. 65.0 Oulu (similar to Mo i Rana 66.3, Jokkmokk 66.6 and Rovaniemi 66.5) 2. 63.4 Trondheim (similar to Reykjavik 64.1, Ostersund 63.2 and Vaasa 63.1) 3. 59.3 Stockholm (similar to Oslo 59.9, Helsinki 60,2, Tallinn 59.4, Saint Petersburg 59.9 and Anchorage 61.2) 4. 55.7 Copenhagen (similar to Malmö 55.6, Glasgow 55.9 and Moscow 55.8) The choice of evaluation criteria is based on scientific discourse in the field of daylighting. According to the new European standard, solar radiation is included. Computer-based daylighting simulations are performed for different designs of the perimeter blocks with equal density, FAR = 1.33. The further north a city is located, the lower the houses in a perimeter block must be to maintain a certain level of daylight. The study confirms that latitude affects daylighting and that geometrical change can improve the conditions for daylight in the perimeter blocks.

Place, publisher, year, edition, pages
Institute of Physics Publishing , 2019. no 1
Keywords [en]
Air pollution, Daylighting, Energy conservation, Molybdenum compounds, Alternative designs, Building height, Design Principles, European Standards, Evaluation criteria, Geometrical changes, Nordic regions, Scientific discourse, Zero energy buildings
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40883DOI: 10.1088/1755-1315/352/1/012016Scopus ID: 2-s2.0-85075009249OAI: oai:DiVA.org:ri-40883DiVA, id: diva2:1376782
Conference
1st Nordic Conference on Zero Emission and Plus Energy Buildings, ZEB+ 2019, 6 November 2019 through 7 November 2019
Note

Funding details: Energimyndigheten; Funding details: Norges Teknisk-Naturvitenskapelige Universitet, NTNU; Funding text 1: This research is part of a larger project at NTNU, Norway which is administrated by RISE, Research Institutes of Sweden and financed by the Swedish Energy Agency. Special thanks for advice around the climate simulations to Consultant Majid Miri, Sweco Architects.

Available from: 2019-12-10 Created: 2019-12-10 Last updated: 2019-12-10Bibliographically approved

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