Effects on Energy Demand in an Office Building Considering Location, Orientation, Façade Design and Internal Heat Gains—A Parametric Study
12.9% of the energy use in the EU originates from the commercial and public sector. It has therefore become a priority to optimize energy efficiency in these buildings. The purpose of this study has been to explore how energy demand in a new office building is affected by different internal heat gai...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/13/23/6170 |
| _version_ | 1797546906291798016 |
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| author | Jakob Carlander Bahram Moshfegh Jan Akander Fredrik Karlsson |
| author_facet | Jakob Carlander Bahram Moshfegh Jan Akander Fredrik Karlsson |
| author_sort | Jakob Carlander |
| collection | DOAJ |
| description | 12.9% of the energy use in the EU originates from the commercial and public sector. It has therefore become a priority to optimize energy efficiency in these buildings. The purpose of this study has been to explore how energy demand in a new office building is affected by different internal heat gains, location, orientation, and façade design, and also to see how different indicators can change perspective on energy efficiency. The study was performed with simulations in IDA-ICE with different façade design and changes in internal heat gains (IHG), orientation, and location. Energy demand was then compared to two different indicators. Using a façade designed to lower solar heat gains had little effect on energy demand in the north of Sweden, but slightly more effect further south. The amount of internal heat gains had significant effect on energy demand. Making deeper studies on design and internal heat gains should therefore be prioritized in the beginning of new building projects so the most energy-efficient design can be chosen. When the indicator kWh/m<sup>2</sup> was used, the cases with low internal heat gains were perceived as the most energy efficient, while when kWh/(m<sup>2</sup> × hpers) (hpers = hours of use) was used, the cases with high occupancy and low electricity use were considered to be the most energy efficient. Therefore, revising the standardized indicator is of great importance. |
| first_indexed | 2024-03-10T14:37:00Z |
| format | Article |
| id | doaj.art-7ae7181e46a54dfb98d7acd7db2be820 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T14:37:00Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-7ae7181e46a54dfb98d7acd7db2be8202023-11-20T22:08:36ZengMDPI AGEnergies1996-10732020-11-011323617010.3390/en13236170Effects on Energy Demand in an Office Building Considering Location, Orientation, Façade Design and Internal Heat Gains—A Parametric StudyJakob Carlander0Bahram Moshfegh1Jan Akander2Fredrik Karlsson3Division of Building, Energy and Environment Technology, Department of Technology and Environment, University of Gävle, 80176 Gävle, SwedenDivision of Building, Energy and Environment Technology, Department of Technology and Environment, University of Gävle, 80176 Gävle, SwedenDivision of Building, Energy and Environment Technology, Department of Technology and Environment, University of Gävle, 80176 Gävle, SwedenSweco Systems AB, Hospitalsgatan 3B, 60224 Norrköping, Sweden12.9% of the energy use in the EU originates from the commercial and public sector. It has therefore become a priority to optimize energy efficiency in these buildings. The purpose of this study has been to explore how energy demand in a new office building is affected by different internal heat gains, location, orientation, and façade design, and also to see how different indicators can change perspective on energy efficiency. The study was performed with simulations in IDA-ICE with different façade design and changes in internal heat gains (IHG), orientation, and location. Energy demand was then compared to two different indicators. Using a façade designed to lower solar heat gains had little effect on energy demand in the north of Sweden, but slightly more effect further south. The amount of internal heat gains had significant effect on energy demand. Making deeper studies on design and internal heat gains should therefore be prioritized in the beginning of new building projects so the most energy-efficient design can be chosen. When the indicator kWh/m<sup>2</sup> was used, the cases with low internal heat gains were perceived as the most energy efficient, while when kWh/(m<sup>2</sup> × hpers) (hpers = hours of use) was used, the cases with high occupancy and low electricity use were considered to be the most energy efficient. Therefore, revising the standardized indicator is of great importance.https://www.mdpi.com/1996-1073/13/23/6170building energy simulationenergy efficiency indicatorsinternal heat gainsoccupant behaviorparametric study |
| spellingShingle | Jakob Carlander Bahram Moshfegh Jan Akander Fredrik Karlsson Effects on Energy Demand in an Office Building Considering Location, Orientation, Façade Design and Internal Heat Gains—A Parametric Study Energies building energy simulation energy efficiency indicators internal heat gains occupant behavior parametric study |
| title | Effects on Energy Demand in an Office Building Considering Location, Orientation, Façade Design and Internal Heat Gains—A Parametric Study |
| title_full | Effects on Energy Demand in an Office Building Considering Location, Orientation, Façade Design and Internal Heat Gains—A Parametric Study |
| title_fullStr | Effects on Energy Demand in an Office Building Considering Location, Orientation, Façade Design and Internal Heat Gains—A Parametric Study |
| title_full_unstemmed | Effects on Energy Demand in an Office Building Considering Location, Orientation, Façade Design and Internal Heat Gains—A Parametric Study |
| title_short | Effects on Energy Demand in an Office Building Considering Location, Orientation, Façade Design and Internal Heat Gains—A Parametric Study |
| title_sort | effects on energy demand in an office building considering location orientation facade design and internal heat gains a parametric study |
| topic | building energy simulation energy efficiency indicators internal heat gains occupant behavior parametric study |
| url | https://www.mdpi.com/1996-1073/13/23/6170 |
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