| 1. |
- Olofsson, Thomas, 1968-, et al.
(författare)
-
Viktiga små steg för bättre klimat
- 2014
-
Ingår i: Västerbottenskuriren. - : Västerbottenskuriren. - 1104-0246. ; , s. 6-
-
Tidskriftsartikel (populärvet., debatt m.m.)
|
|
| 2. |
- Allard, Ingrid, 1986-, et al.
(författare)
-
Energy evaluation methods for residential buildings in Nordic countries
- 2012
-
Ingår i: Proceeding of the Technoport Conference. - : Elsevier.
-
Konferensbidrag (refereegranskat)abstract
- To meet the goals of the directive 2010/31/EU on the energy performance of buildings, the building sector in Europe now faces a transition towards more energy efficient buildings. Research and development of new energy solutions and technology will be necessary for the transition and the importance of measuring and evaluating building energy performance increases. This paper attempts to review and evaluate different methods that are commonly used to analyze energy performance in residential buildings in Nordic countries, primarily in Sweden, Norway and Finland. A short international review of regulations is also included. Some advantages and disadvantages of each method are discussed, as well as commonly used methods in the three countries. Although the three Nordic countries have similar climate conditions and building traditions, the study shows that there exist relatively large variations in defining parameters related to energy performance in residential buildings, such as energy use, heated area, and climate zones. The outcome of the regulations could be investigated by adapting the codes on a selected set of buildings. Common analyzing methods, or parts of methods, are found to be used in several countries. These aspects may be considered in further work to develop more accurate and easily comparable methods to evaluate energy performance for residential buildings in cold climate.
|
|
| 3. |
- Andersson, Staffan, 1952-, et al.
(författare)
-
Building performance based on measured data
- 2011
-
Ingår i: World Renewable Energy Congress – Sweden, 8–13 May, 2011, Linköping, Sweden. - Linköping : Linköping University Electronic Press. - 9789173930703 ; , s. 899-906
-
Konferensbidrag (refereegranskat)abstract
- With increasing liability for builders, the need for evaluation methods that focuses on the building’s performance and thus excludes the impact from residents’ behavior increases. This is not only of interest for new buildings but also when retrofitting existing buildings in order to reduce energy end-use. The investigation in this paper is based on extensive measurements on two fairly representative type of buildings, a single family building in Ekerö, Stockholm built 2000 and two apartment buildings in Umeå (1964) in order to extract key energy performance parameters such as the building’s heat loss coefficient, heat transfer via the ground and heat gained from the sun and used electricity. With access to pre-processed daily data from a 2-month periods, located close to the winter solstice, a robust estimate of the heat loss coefficient was obtained based on a regression analysis. For the single family building the variation was within 1% and for the two heavier apartment buildings an average variation of 2%, with a maximum of 4%, between different analyzed periods close to the winter solstice. The gained heating from the used electricity in terms of a gain factor could not be unambiguously extracted and therefore could only a range for the heat transfer via ground be estimated. The estimated range for the transfer via ground for the two apartment buildings were in very good agreement with those calculated according to EN ISO 13 370 and corresponded to almost 10% of the heating demand at the design temperature. For the single family building with an insulated slab and parts of the walls below ground level, the calculations gave slightly higher transfer than what was obtained from the regression analysis. For the estimated gained solar radiation no comparison has been possible to make, but the estimated gain exhibited an expected correlation with the global solar radiation data that was available for the two apartment buildings.
|
|
| 4. |
|
|
| 5. |
|
|
| 6. |
- Fischl, Geza, et al.
(författare)
-
Design av terapeutiska miljöer
- 2012
-
Ingår i: Byggnadsrelaterad ohälsa i Kvarkenregionen. - Vasa : Yrkeshögskolan Novia. - 9789525839364 ; , s. 103-110
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Terapeutiska miljöer kan ha en kraftfull, läkande effekt på patienter – de sänker stressnivån vilket gör att patienternas medicinska tillstånd förbättras. Entydiga forskningsresultat visar att t.ex. vistelse i naturen, motion, fysisk rörelse och förbättrade sociala aktiviteter gör att patienters återhämtningsförmåga stärks och stressnivån sjunker. De terapeutiska miljöerna ger en ökad känsla av kontroll, stärkt integritet och förbättrat social stöd. Genom att erbjuda positiv stimulans, såsom konst eller musik, förstärks den goda upplevelsen ytterligare. Trots att man i olika evidensbaserade forskningsstudier bevisat att terapeutiska miljöer har positiv inverkan på patienters hälsa och välbefinnande är dessa miljöer mindre kända hos allmänheten, som därför inte heller efterfrågar dem i samband med vård. Förmodligen är utbildning av allmänheten en framkomlig väg att för att höja medvetenheten om terapeutiska miljöers hälsofrämjande effekt.
|
|
| 7. |
|
|
| 8. |
|
|
| 9. |
- Mahlia, T.M. Indra, et al.
(författare)
-
Energy and cost savings of optimal thickness for selected insulation materials and air gaps for building walls in tropical climate
- 2012
-
Ingår i: Energy Education Science & Technology, Part A: Energy Science and Research. - Trabzon, Turkey : Scila Science. - 1308-772X. ; 29:1, s. 649-662
-
Tidskriftsartikel (refereegranskat)abstract
- Air conditioning usage in buildings is one of the major energy consumption sources due to thermal comfort requirement in tropical climate. An efficient building thermal insulation can reduce the energy consumption for cooling systems due to heat transfer from ambient. Therefore, it is crucial to study the effectiveness of energy saving by thermal insulation for buildings. In this study, the savings of ten selected building thermal insulation materials on the energy consumption of air-conditioning for cooling are evaluated based on tropical climate condition in Malaysia. The life-cycle cost analysis is conducted is calculated based on the energy savings. The results have revealed that life cycle cost is varying from 73 to 85%/m2 wall and energy saving from 85 to 92%/m2wall, which can be achieved depending on the insulation material used at their optimal thickness. The insulations Stropor exhibit optimal results in terms of economic benefits. The energy savings of air gap in the wall construction is also investigated for the selected insulation material. It is found that additional 0.64%/m2w all of life cycle cost savings can be achieved by applying 6 cm air gap at the selected insulation at optimal thickness.
|
|
| 10. |
|
|
| 11. |
- Nordwall, Ulf, 1966-, et al.
(författare)
-
A quantitative approach for valuating architectural qualities
- 2011
-
Ingår i: The Open Construction and Building Technology Journal. - : Bentham Open. - 1874-8368. ; 5, s. 105-112
-
Tidskriftsartikel (refereegranskat)abstract
- Architectural qualities is often valuated based on a describable nature with a more personal interpretation, such as living space, size of ground plot, the number of sanitation rooms, or standard points according to the property taxation. Models with values of a more measurable qualitative nature, such monetary parameters,are less used. Within other research areas, for example the environmental and economic field, there are examples of well used qualitative models. One example is the Contingent Valuation (CV) model. It can be used to measure values in terms of willingness to pay on a hypothetic market. In this paper we introduce adirect quantitative approach for evaluating architectural qualities based on the theory of CV. The architectural qualities investigated are: the patina and mellowness of building components, usage flexibility within the apartment, and properties and characteristics of the surroundings.The method has been applied on a smaller case-study of 150 people living in cooperative and rented flats at Ålidhem, Ålidbacken and Östermalm in Umeå, Sweden. The case study was used merely to demonstrate and evaluate the methodology. The study indicated that the introduced three architectural values could be investigated with the used CV approach. It was found that the tenants had a measureable willingness to pay for those qualities. This supports a notion that valuations of architectural qualities are not entirely subjective and dependent on the individuals. Consequently the study supports the proposal to use qualitative measures to grade and compare such qualities.
|
|
| 12. |
- Nordwall, Ulf, 1966-, et al.
(författare)
-
Architectural caring. Architectural qualities from a residential property perspective
- 2013
-
Ingår i: Architectural Engineering and Design Management. - London : Taylor & Francis. - 1745-2007 .- 1752-7589. ; 9:1, s. 1-21
-
Tidskriftsartikel (refereegranskat)abstract
- A common definition of architectural qualities in general and the values of the qualities in particular can differ significantly in the understanding of different operators in the building construction sector. One platform to define and investigate architectural qualities is to use a property management perspective and focus on the tenants and their individual well-being in the accommodation. In this study, architectural qualities were investigated in three residential areas with multi-family buildings in Sweden: Backa Röd, Högsbohöjd and Nybodahöjden. The data were collected from interviews with building industry people and the residential tenants. Three architectural qualities became the foundation for the interviews: properties and characteristics of the surroundings, usage flexibility within the apartment, the patina and mellowness of building components. The investigation of collected data was inspired by a method called grounded theory (GT). In this study, GT was used to discover and develop a theory of architectural caring, where architectural qualities have a bearing on the nature of a residential area. We found that a central focus in the residential property management perspective is architectural caring. To care for the houses, materials, construction and the neighbourhood environment is to care for the residents and give them a sense of belonging.
|
|
| 13. |
- Olofsson, Thomas, 1968-, et al.
(författare)
-
A quantitative evaluation of airtightness measurement experiences
- 2014
-
Ingår i: NSB 2014 10th Nordic Symposium on Building Physics 15-19 June 2014 Lund, Sweden. - 9789188722539
-
Konferensbidrag (refereegranskat)abstract
- Evaluation of building air tightness based on field measurements is an important aspect in the process to provide good indoor environment and energy efficient buildings. The measurements are generally conducted by experts. To improve field methods for evaluation of building air tightness, experience of these experts can be useful. The scope of this paper is to problematize usefulness of methods for airtightness measurements, how and when methods are used and potential for future development. Surveyed Swedish and Finnish experts have valued the performance and usefulness of methods in the perspective of being used for singe family, multifamily, new, inhabited, under construction, renovation, leaky and air-tight buildings. They also valued the future potential, as well as their own level of experience and expertise, of the methods. Although the results of the survey were based on a small set of collected data, it indicated that the experts favored methods with their highest assessed experience and expertise, i.e. Blower door and Surface temperature measurements/Thermography. Potential of future development within quantitative and component methods was assessed to be positive in general and in particular for the favored methods.
|
|
| 14. |
- Schumacher, Sebastian, et al.
(författare)
-
Communication Strategies
- 2010
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The goal of InPro is to transform the early design phase (ED) in construction by the developmentof an open information environment (OIE) for knowledge-based collaborative processes throughout the lifecycle of a building (LC), assuming the ED phase the cooperationfrom its start to its end of many actors with a common goal.The aim of Work Package 1 is to analyse thoroughly the traditional ways of working andtheir cultural, technical and economic reasons. This way we gather clues and means tochange attitudes and raise the stakeholder’s awareness for a need of change. The RTD work results in new customer-centred business concepts and key performance indicatorsthat allow companies and managers to monitor development and change.The aim of D11 “Communication strategies” (T1.4 "Strategies for take-up”) is to developstrategies for the quick take-up of an open and collaborative information environmentwith its model-based processes throughout the European construction sector. Main focusof this task is to influence the human behaviour and bias all stakeholders in a positiveway towards model-based working. This includes the development of use cases for winwin situations for distributed business processes and building project realisation in cooperation.This is developed into the “To-Be"-scenario for model-based working, includingjob descriptions, overview of technical infrastructure, and strategies for implementationand training.This deliverable is concerned with identifying what and which roles are those that need tobe changed or motivated to support the change in order to move towards a more desirablestate and improve organisational effectiveness. The first part of this document describesconcepts for the take-up necessary strategies, examining change. Change shouldhappen in three levels: project, company and industry level. Roles and responsibilitiesare described as they are in the present (the so called “As-Is” situation) as well as in thefuture InPro environment (the so called “To-Be” situation). The second part presents theresults which stakeholder can be an initiator or a driver of the change from demonstrationsof KPs and from the viewpoint of client. At the end of the second part, strategies toimplement in a short-term are determined.The findings of D11 “Communication strategies” consist of:Changes need to be implemented starting at project level and continued byspreading to company and industry levelMain changes required at project level: technology, staff and training, a commitmentamong project team members to collaboration Main changes required at company level: staffing needs, project organisationand company wide information use contained in the building model Main changes required at industry level: establishment of European boundaryconditions to an Open Information Environment (OIE) work The main affected roles are: client, project manager, architect and contractor New roles are: model manager and main actor Main beneficiaries of change from KPs demonstrations and several studies viewpoint input are: client, designers and contractorsMain initiators of change from client viewpoint input are: client and designers Main drivers of change from KPs demonstrations and client viewpoint input are: client, managers and consultants
|
|
| 15. |
- Vesterberg, Jimmy, 1976-
(författare)
-
A regression approach for assessment of building energy performance
- 2014
-
Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Reliable evaluation methods is needed to ensure that investments in energy conservation measures (ECMs) and the construction of new energy efficient buildings lives up to the promised and expected performance.This thesis presents and evaluates a regression method for estimation of influential building parameters: transmission losses above ground (including air leakage), ground heat loss, and overall heat loss coefficient.The analysis is conducted with separately metered electricity, heating and weather data using linear regression models based on the simplified steady-state power balance for a whole building.The evaluation consists of analyzing the robustness of the extracted parameters, their suitability to be used as input values to building energy simulations (BES) tools. In addition, differences between uncalibrated and calibrated BES models are analyzed when they are used to calculate energy savings. Finally the suitability of using a buildings overall heat loss coefficient as a performance verification tool is studied.The presented regression method exhibits high robustness and good agreement with theory. Knowledge of these parameters also proved beneficial in BES calibration procedures as well as in performance verifications. Thus, the presented method shows promising features for reliable energy performance assessments of buildings.
|
|
| 16. |
|
|
| 17. |
|
|
