Integrating Passive Energy Efficient Measures to the Building Envelope of a Multi-Apartment Building in Sweden: Analysis of Final Energy Savings and Cost Effectiveness
A major challenge in building energy renovation is to cost effectively achieve notable energy savings. This paper investigates cost-effective passive energy-efficiency measures for thermal envelope retrofit of a typical Swedish multi-apartment building from the 1970s. Here, the use of different type...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/10/2654 |
| _version_ | 1827721343940952064 |
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| author | Youcef Boussaa Ambrose Dodoo Truong Nguyen Katarina Rupar-Gadd |
| author_facet | Youcef Boussaa Ambrose Dodoo Truong Nguyen Katarina Rupar-Gadd |
| author_sort | Youcef Boussaa |
| collection | DOAJ |
| description | A major challenge in building energy renovation is to cost effectively achieve notable energy savings. This paper investigates cost-effective passive energy-efficiency measures for thermal envelope retrofit of a typical Swedish multi-apartment building from the 1970s. Here, the use of different types of insulation materials for the retrofits of roof, exterior walls, and ground floor are analyzed along with changing windows and doors with varying thermal transmittance values. The cost-effectiveness analysis is based on the net present value of the investment costs of the energy-efficiently measures and the achieved energy cost saving. Different economic scenarios and renovation cases are considered in techno-economic analyses to determine the cost-effective energy-efficiency retrofit measures. The results indicate that improved windows reduce energy demand for space heating by up to 23% and yield the highest final energy savings. However, additional mineral wool roof insulation is the most cost-effective measure under all economic scenarios. This measure gave the lowest ratio of cost effectiveness of about 0.1, which was obtained under the stable scenario. The final energy savings that can be achieved in a cost-effective manner vary between 28% and 61%, depending on the economic scenario and renovation case. This analysis emphasizes the influence of different renovation cases and economic parameters on the cost effectiveness of passive energy-efficiency measures. |
| first_indexed | 2024-03-10T21:22:12Z |
| format | Article |
| id | doaj.art-049b93084f0b45febb68ec9cba879c59 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T21:22:12Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-049b93084f0b45febb68ec9cba879c592023-11-19T15:57:29ZengMDPI AGBuildings2075-53092023-10-011310265410.3390/buildings13102654Integrating Passive Energy Efficient Measures to the Building Envelope of a Multi-Apartment Building in Sweden: Analysis of Final Energy Savings and Cost EffectivenessYoucef Boussaa0Ambrose Dodoo1Truong Nguyen2Katarina Rupar-Gadd3Department of Built Environment and Energy Technology, Linnaeus University, 351 95 Växjö, SwedenDepartment of Building Technology, Linnaeus University, 351 95 Växjö, SwedenDepartment of Applied Physics and Electronics, Umeå University, 901 87 Umeå, SwedenDepartment of Built Environment and Energy Technology, Linnaeus University, 351 95 Växjö, SwedenA major challenge in building energy renovation is to cost effectively achieve notable energy savings. This paper investigates cost-effective passive energy-efficiency measures for thermal envelope retrofit of a typical Swedish multi-apartment building from the 1970s. Here, the use of different types of insulation materials for the retrofits of roof, exterior walls, and ground floor are analyzed along with changing windows and doors with varying thermal transmittance values. The cost-effectiveness analysis is based on the net present value of the investment costs of the energy-efficiently measures and the achieved energy cost saving. Different economic scenarios and renovation cases are considered in techno-economic analyses to determine the cost-effective energy-efficiency retrofit measures. The results indicate that improved windows reduce energy demand for space heating by up to 23% and yield the highest final energy savings. However, additional mineral wool roof insulation is the most cost-effective measure under all economic scenarios. This measure gave the lowest ratio of cost effectiveness of about 0.1, which was obtained under the stable scenario. The final energy savings that can be achieved in a cost-effective manner vary between 28% and 61%, depending on the economic scenario and renovation case. This analysis emphasizes the influence of different renovation cases and economic parameters on the cost effectiveness of passive energy-efficiency measures.https://www.mdpi.com/2075-5309/13/10/2654energy renovationbuilding envelopeheat-saving measuresSwedish multi-dwelling buildingeconomic analysis |
| spellingShingle | Youcef Boussaa Ambrose Dodoo Truong Nguyen Katarina Rupar-Gadd Integrating Passive Energy Efficient Measures to the Building Envelope of a Multi-Apartment Building in Sweden: Analysis of Final Energy Savings and Cost Effectiveness Buildings energy renovation building envelope heat-saving measures Swedish multi-dwelling building economic analysis |
| title | Integrating Passive Energy Efficient Measures to the Building Envelope of a Multi-Apartment Building in Sweden: Analysis of Final Energy Savings and Cost Effectiveness |
| title_full | Integrating Passive Energy Efficient Measures to the Building Envelope of a Multi-Apartment Building in Sweden: Analysis of Final Energy Savings and Cost Effectiveness |
| title_fullStr | Integrating Passive Energy Efficient Measures to the Building Envelope of a Multi-Apartment Building in Sweden: Analysis of Final Energy Savings and Cost Effectiveness |
| title_full_unstemmed | Integrating Passive Energy Efficient Measures to the Building Envelope of a Multi-Apartment Building in Sweden: Analysis of Final Energy Savings and Cost Effectiveness |
| title_short | Integrating Passive Energy Efficient Measures to the Building Envelope of a Multi-Apartment Building in Sweden: Analysis of Final Energy Savings and Cost Effectiveness |
| title_sort | integrating passive energy efficient measures to the building envelope of a multi apartment building in sweden analysis of final energy savings and cost effectiveness |
| topic | energy renovation building envelope heat-saving measures Swedish multi-dwelling building economic analysis |
| url | https://www.mdpi.com/2075-5309/13/10/2654 |
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