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Publications (10 of 17) Show all publications
Johansson, M., Gustafsson, A., Olsson, J., Ylmen, P., Nord, T., Dorn, M., . . . Brännström, M. (2019). Framtidens biobaserade byggande och boende: Slutrapport.
Open this publication in new window or tab >>Framtidens biobaserade byggande och boende: Slutrapport
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2019 (Swedish)Report (Other academic)
Abstract [en]

The aim

of the project "Biobased building and living for the future" was to create conditions for increased use of bio-based products and services in the construction sector in Sweden and Europe and to increase the competitiveness of the Swedish timber manufacturing industry. The project has shown ways to develop E-commerce, parts of the production where increased digitalization leads to increased capacity and quality, as well as solutions for development of floor systems, external walls and tall timber buildings. The project has shown development opportunities to increase the use of bio-based products that implemented will increase competitiveness.

The project has been divided into eleven sub-projects to study the various aspects of external factors, market conditions and business models, process development and product development. Within each sub-project, several workshops have been carried out to jointly evaluate results and decide the next step in the sub-project. Through joint workshops, the partners have also been able to meet and share results across the sub-projects and spread knowledge and create networks within the industry. The last part is perceived as very valuable by both the companies and the academy / institute.

For the joinery value chain, a current situation analysis has been carried out and shown how the development of E-commerce platforms must be combined with process development in order to have a large effect. The results will be utilized in the companies' strategy work ahead. For the timber building value chain, demonstrators have shown development opportunities for both process and product development. The next step for the companies is to evaluate the various solutions linked to their own production conditions.

Publisher
p. 100
Series
RISE Rapport ; 2019:18
Keywords
Joinery industry, Wood manufacturing, Timber Building, Product development, Process development
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-38177 (URN)978-91-88907-44-8 (ISBN)
Available from: 2019-03-13 Created: 2019-03-13 Last updated: 2019-06-27Bibliographically approved
Ylmen, P., Peñaloza, D. & Mjörnell, K. (2019). Life Cycle Assessment of an Office Building Based on Site-Specific Data. Energies, 12(13), Article ID 2588.
Open this publication in new window or tab >>Life Cycle Assessment of an Office Building Based on Site-Specific Data
2019 (English)In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 12, no 13, article id 2588Article in journal (Refereed) Published
Abstract [en]

Life cycle assessment (LCA) is an established method to assess the various environmental impacts associated with all the stages of a building. The goal of this project was to calculate the environmental releases for a whole office building and investigate the contribution in terms of environmental impact for different parts of the building, as well as the impact from different stages of the life cycle. The construction process was followed up during production and the contractors provided real-time data on the input required in terms of building products, transport, machinery, energy use, etc. The results are presented for five environmental impact categories and, as expected, materials that constitute the main mass of the building and the energy used during operation contribute the largest share of environmental impact. It is usually difficult to evaluate the environmental impact of the materials in technical installations due to the lack of data. However, in this study, the data were provided by the contractors directly involved in the construction and can, therefore, be considered highly reliable. The results show that materials for installations have a significant environmental impact for four of the environmental impact categories studied, which is a noteworthy finding.

Keywords
life cycle assessment (LCA), building, office, technical installations, HVAC, livscykelanalys (LCA), byggnad, kontor, tekniska installationer, VVS
National Category
Environmental Analysis and Construction Information Technology
Identifiers
urn:nbn:se:ri:diva-39329 (URN)10.3390/en12132588 (DOI)
Funder
Swedish Energy Agency, 37512-2SBUF - Sveriges Byggindustriers Utvecklingsfond, 13399Vinnova, 2015-05852
Available from: 2019-07-05 Created: 2019-07-05 Last updated: 2019-07-05Bibliographically approved
Ylmen, P., Peñaloza, D. & Schade, J. (2018). Livscykelstudie av kontor med kombinerad betong- och träkonstruktion.
Open this publication in new window or tab >>Livscykelstudie av kontor med kombinerad betong- och träkonstruktion
2018 (Swedish)Report (Other academic)
Abstract [en]

Vasakronan has produced an office building were seven of the floors are mainly made in concrete and two floors are mainly made of wooden materials.  As Vasakronan had little previous experience with wooden construction works they were interested in comparing the different production methods from an environmental and economic perspective.

The main purpose of the project was to analyze the long-term environmental impact of different building methods with alternative design and production as well as material choice and on-site systems. A secondary purpose was to assess the economic consequences of different construction solutions. The goals were to:

  • provide advice and suggestions on how different material choice, construction solutions and assembly methods can be used from their environmental and economic properties.
  • find environmental hot-spots in the building process.
  • contribute with knowledge and experience to develop methods regarding life cycle assessment (LCA) and calculation of life cycle cost (LCC) for building projects. 
  • compare differences between constructions in concrete and wood.

An LCA was carried out on the whole building and LCA and LCC calculation were conducted to compare the environmental impact and cost of concrete and wooden constructions.  The results include global warming potential, eutrophication potential, acidification potential, stratospheric ozone depletion potential, photooxidants creation potential and present costs. The data were collected by the contractors during production to ensure that the results are based on the finished building and not assumptions made during the design stage.

The report shows the difficulties that arise during life cycle studies of buildings but also provides guidance how to solve them in this particular case, which can be used as a base for continued development of methods.

Publisher
p. 59
Series
RISE Rapport ; 2018:76
Keywords
Life cycle assessment, LCA, LCC, building, office, Livscykelanalys, LCA, Livscykelkostnadsberäkningar, LCC, byggnad, kontor
National Category
Engineering and Technology
Identifiers
urn:nbn:se:ri:diva-36669 (URN)978-91-88907-26-4 (ISBN)
Projects
Framtidens Biobaserade Byggande och Boende
Note

Ändringar: Rapporten publicerad 2018-12-21. Rapporten/fulltexten reviderad 2019-04-04 med följande ändringar:Rapporten har uppdaterats fr o m 2019-04-04 efter att beräkningarna för miljöpåverkan korrigerats, vilket främst påverkade resultaten för ODP och POCP. Påverkan på resultaten har justerats i resultat- och diskussionsdelarna av rapporten.

Available from: 2018-12-21 Created: 2018-12-21 Last updated: 2019-06-20Bibliographically approved
Ylmen, P., Berlin, J., Mjörnell, K. & Arfvidsson, J. (2017). The importance of including secondary effects when defining the system boundary with life cycle perspective: Case study for design of an external wall. Journal of Cleaner Production, 143, 1105-1113
Open this publication in new window or tab >>The importance of including secondary effects when defining the system boundary with life cycle perspective: Case study for design of an external wall
2017 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 143, p. 1105-1113Article in journal (Refereed) Published
Abstract [en]

Life cycle assessment and life cycle cost analysis are suitable tools in trying to minimize environmental impact and cost. To get reliable results it is crucial to set up correct system boundaries for the investigation, but it is often difficult to understand a complex products system because of the cascade effects of consequences that can be induced even by small changes. In this paper the effects and consequences evaluation (ECE) method is introduced to systematically identify and organize the effects and consequences for a design change of parts of a complex system. The method is applied in a case study of external wall insulation for a new building to investigate the importance of correct system boundaries. Using the methodical approach in identifying all significant consequences showed that unexpected unit processes can be important when deciding on the relevant system boundary. We also conclude that such processes can have a significant impact on the final results by calculating the change in global warming potential and life cycle cost for the processes affected by the design option.

Keywords
Building, External wall, Global warming, Life cycle assessment, Life cycle cost assessment, System boundary, Buildings, Cost benefit analysis, Costs, Ecodesign, Environmental impact, Structural design, Walls (structural partitions), External wall insulations, External walls, Global warming potential, Life Cycle Assessment (LCA), Life cycle cost analysis, Life cycle perspectives, Lifecycle costs, Life cycle
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-31047 (URN)10.1016/j.jclepro.2016.12.009 (DOI)2-s2.0-85008169591 (Scopus ID)
Note

 Funding details: 2013-003176, Energimyndigheten; Funding text: We would like to thank the Development Fund of the Swedish Construction Industry (SBUF) (12809) and the Swedish Energy Agency (2013-003176) for funding this study, as well as Skanska Sverige AB for providing information on and insights into the building production process.

Available from: 2017-09-01 Created: 2017-09-01 Last updated: 2018-08-22Bibliographically approved
Ylmen, P., Mjörnell, K., Berlin, J. & Arfvidsson, J. (2017). The influence of secondary effects on global warming and cost optimization of insulation in the building envelope. Building and Environment, 118, 174-183
Open this publication in new window or tab >>The influence of secondary effects on global warming and cost optimization of insulation in the building envelope
2017 (English)In: Building and Environment, ISSN 0360-1323, E-ISSN 1873-684X, Vol. 118, p. 174-183Article in journal (Refereed) Published
Abstract [en]

The relative environmental impact from the building construction phase is increasing compared to the operation phase for new buildings. Therefore, it is important to consider the complete environmental life cycle of energy improvement measures. Many advanced optimization methods have been developed in recent years to assess building life cycle impact. However, these previous studies have not fully addressed the secondary effects, in other words, indirect effects outside the actual design option. This may lead to conclusions of optimization studies based on misleading calculation results. The main purpose this study was to highlight the relevance of including secondary effects in optimization of building design with respect to global warming potential and cost. This was done by conducting a parameter study of the building envelope insulation thickness with regard to global warming potential and life cycle costs, while considering secondary effects induced by the different design options. Findings from this study show that secondary effects influence the system boundary, algorithm architecture, results and the final conclusions of optimal building design. Omitting secondary effects can thus lead to incorrect decision on optimal solutions with regard to global warming potential and life cycle cost. Therefore, it is therefore important to take them into consideration when performing optimization studies of building design options.

Keywords
Building envelope, Life cycle assessment, Life cycle cost, Optimization, Secondary effects, Architectural design, Buildings, Costs, Environmental impact, Global warming, Life cycle, Solar buildings, Algorithm architectures, Building construction, Building envelopes, Environmental life cycle, Global warming potential, Life Cycle Assessment (LCA), Lifecycle costs, Structural design
National Category
Civil Engineering
Identifiers
urn:nbn:se:ri:diva-29309 (URN)10.1016/j.buildenv.2017.03.019 (DOI)2-s2.0-85016298996 (Scopus ID)
Available from: 2017-04-26 Created: 2017-04-26 Last updated: 2019-06-17Bibliographically approved
Ylmen, P., Mjörnell, K., Berlin, J. & Arfvidsson, J. (2016). Välj rätt systemgräns vid designoptimering. Husbyggaren (5), 32-34
Open this publication in new window or tab >>Välj rätt systemgräns vid designoptimering
2016 (Swedish)In: Husbyggaren, no 5, p. 32-34Article in journal (Other academic) Published
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-27699 (URN)
Available from: 2017-01-02 Created: 2017-01-02 Last updated: 2019-06-19Bibliographically approved
Hansén, M., Ylmen, P., Romild, J. & Almström, S. (2013). Beständighet hos lufttäthetslösningar för byggnadskonstruktioner (ed.). Bygg & Teknik (5), 15
Open this publication in new window or tab >>Beständighet hos lufttäthetslösningar för byggnadskonstruktioner
2013 (Swedish)In: Bygg & Teknik, no 5, p. 15-Article in journal (Other (popular science, discussion, etc.)) Published
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-8096 (URN)15543 (Local ID)15543 (Archive number)15543 (OAI)
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2018-08-13Bibliographically approved
Mjörnell, K., Ylmen, P., Krause, M., Stiegel, H., Herkel, S., Risholt, B., . . . Chica, J. A. (2012). A survey on the potential of prefabricated multifunctional facade systems for building renovation (ed.). In: Proceedings of the 5th International Building Physics Conferenc: . Paper presented at 5th Interntional Building Physics Conference in Kyoto May 2012.
Open this publication in new window or tab >>A survey on the potential of prefabricated multifunctional facade systems for building renovation
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2012 (English)In: Proceedings of the 5th International Building Physics Conferenc, 2012Conference paper, Published paper (Refereed)
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-12139 (URN)13784 (Local ID)13784 (Archive number)13784 (OAI)
Conference
5th Interntional Building Physics Conference in Kyoto May 2012
Available from: 2016-09-13 Created: 2016-09-13 Last updated: 2018-08-22Bibliographically approved
Ylmen, P., Hansén, M. & Romild, J. (2012). Beständighet hos lufttäthetslösningar (ed.). Paper presented at .
Open this publication in new window or tab >>Beständighet hos lufttäthetslösningar
2012 (Swedish)Report (Refereed)
Series
SP Rapport, ISSN 0284-5172 ; 2012:57
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-5079 (URN)14038 (Local ID)978-91-87017-76-6 (ISBN)14038 (Archive number)14038 (OAI)
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2018-08-13Bibliographically approved
Ruud, S., Lane, A.-L., Ylmen, P. & Ståhl, F. (2012). Demonstrationsplattform för näranollenergibyggnader: Kriterier för demonstrationsstöd för flerbostadshus, kontor, skolor och sjukhus (ed.). Paper presented at .
Open this publication in new window or tab >>Demonstrationsplattform för näranollenergibyggnader: Kriterier för demonstrationsstöd för flerbostadshus, kontor, skolor och sjukhus
2012 (Swedish)Report (Refereed)
Series
SP Rapport, ISSN 0284-5172 ; 2012:02
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-5028 (URN)13249 (Local ID)978-91-87017-19-3 (ISBN)13249 (Archive number)13249 (OAI)
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2019-06-20Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-8530-688x

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