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Between Research and Practice: Experts on Implementing Sustainable Construction
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Publication Year:
2013
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Publication Year:
2013
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Bygger Norges første plusshuss
Publication Year:
2013
Publication Year:
2013
Hele 1556 kvadratmeter med solceller gjør at Norge får sitt første plusshus i Bærum. Artikkelen skrevet av Caroline Drefvelin.
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A net zero emission concept analysis of a Norwegian single family house – A CO2 accounting method
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Publication Year:
2013
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Publication Year:
2013
In order to reach the goal of a zero emission building (ZEB), CO2 emission data has to be made available and verified for traditional building materials, new ‘state-of-the-art’ building materials and the active elements used to produce renewable energy. However, an initial literature review found that although there are databases of embodied carbon values for most building materials, the range in results for some materials are varied and inconsistent. This paper follows on from previous work on the development of a transparent and robust method to calculate CO2eq emissions of the materials used in the concept analysis of the ZEB…
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Form følger miljø-konseptet og løsninger for verdens nordligste energipositive næringsbygg
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Publication Year:
2012
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Publication Year:
2012
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Form følger miljø - Powerhouse-alliansens to første prosjekter
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Publication Year:
2012
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2012
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Laboratorier for morgendagens løsninger
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Publication Year:
2013
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Publication Year:
2013
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Hollow Silica Nanospheres as a Super-Insulating Material
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Publication Year:
2013
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Publication Year:
2013
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Rehabmarkedet er enormt - og uutnyttet
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2013
Publication Year:
2013
Alt som skal til for å rehabilitere eldre eneboliger til moderne energistandarder er tilgjengelig. Men kundene skygger unna. Artikkel skrevet av Joachim Seehusen
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Visible-Light Driven Photochromism of Hexagonal Sodium Tungsten Bronze Nanorods
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Publication Year:
2013
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Publication Year:
2013
Single-crystalline sodium tungsten bronze (Na-WO3) nanorods with typical diameters of 10−200 nm and lengths of several micrometers were prepared via hydrothermal synthesis. The as-prepared Na-WO3 nanorods crystallized in a hexagonal structure (space group P6/mmm) with unit cell parameters a=7.3166(8) Å and c= 3.8990(8) Å and elongated along the ⟨001⟩direction. Chemical analyses indicated a stoichiometry of Na0.18WO3.09·0.5H2O, revealing the existence of tunnel Na+ ions and water molecules in the structure, as confirmed also by the vibrational spectroscopic study. The as-prepared Na-WO3 nanorods exhibited a direct-allowed electronic transition with band-gap energy of about 2.5 eV, which allows a visible-light-driven photochromism related to…
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Analysis of the air heating in Norwegian passive houses using detailed dynamic simulations
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Publication Year:
2013
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Publication Year:
2013
The passive house (PH) standard is seen as the future minimal requirement for buildings in Norway, where a specific definition has been developed (NS 3700). Nevertheless, the relation between this standard and air heating (AH) is not clear while both concepts are often associated. The present contribution investigates challenges for AH in terms of thermal dynamics (e.g. temperature distribution and control) as well as the feasibility of the AH concept. This is done using detailed dynamic simulations on a typical detached house typology. Results show some limitations of the AH concept in Nordic countries, as well as provide guidelines for…
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Gode skussmål til nullutslippsatsing
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2013
Publication Year:
2013
Zeb, forskningssenteret for nullutslippsbygg ved NTNU er sikret ny treårskontrakt med Forskningsrådet. Det er klart etter at senteret kommer svært godt ut av en fersk midtveisevaluering. Artikkelen er skrevet av Sølvi Waterloo Normannsen
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Passive House at the crossroads: The past and the present of a voluntary standard that managed to bridge the energy efficiency gap
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Publication Year:
2013
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Publication Year:
2013
Improving energy efficiency in dwellings is generally seen as the low-hanging fruit of climate change mitigation. In particular decreased heat loss through better insulation is suggested as one of the most cost-effective means to achieve the ambitious national and international goals of climate gas reduction. However, the literature shows that a profitable technological solution is not sufficient to reach the energy goals. Aspects such as a lack of information, unobserved costs, and heterogeneity among users can compromise the success of technical innovation. Still, there are successful concepts that drive the technological development in the construction sector. The Passive House is…
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Renovation of an office buildings in Bergen: architectural and daylighting design as a tool for energy efficiency
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Publication Year:
2013
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Publication Year:
2013
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Artium Design in Office Buildings. An evaluation of how artium design influences the daylight availability
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Publication Year:
2013
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Publication Year:
2013
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Towards LCA of building automation and control system in zero emission buildings – measurements of auxiliary energy to operate a KNX BUS-system
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Publication Year:
2013
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Publication Year:
2013
The demands for both thermal comfort and reduced energy consumption in buildings have become a major driving force for the increased use of advanced building automation and control systems (BACS). In the on-going development of Zero Emission Buildings (ZEBs), it seems to be a common understanding that such systems are needed in order to save energy and reach the zero emission goals, and that energy consumption for their operation is negligible compared to the building needs and the energy saving potential BACS causes. However, sensors and actuators in automation and control systems require electricity to operate, and both the environmental…
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Impact on architectural quality, daylighting and thermal performance of different atria in renovation project
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Publication Year:
2013
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Publication Year:
2013
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Sustainable Facade Renovation. Using Dynamic Performance Simulations
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Publication Year:
2013
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Publication Year:
2013
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A net zero emission concept analysis of a Norwegian single family house - A CO2 accounting method.
Publication Year:
2013
Publication Year:
2013
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Towards LCA building automation and control systems in zero emission buildings - Measuremets of auxiliary energy to operate a KNX bus-system
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Publication Year:
2013
Authors:
Publication Year:
2013
The demands for both thermal comfort and reduced energy consumption in buildings have become a major driving force for the increased use of advanced building automation and control systems (BACS). In the on-going development of Zero Emission Buildings (ZEBs), it seems to be a common understanding that such systems are needed in order to save energy and reach the zero emission goals, and that energy consumption for their operation is negligible compared to the building needs and the energy saving potential BACS causes. However, sensors and actuators in automation and control systems require electricity to operate, and both the environmental…
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Sustainable refurbishment of Ellebo Housing Estate
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Publication Year:
2013
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Publication Year:
2013
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Simulating switchable glazing with energy plus: an empirical validation and calibration of a thermotropic glazing model
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Publication Year:
2015
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Publication Year:
2015
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Solar energy for zero energy buildings - a comparison between solar thermal, PV and photovoltaic-thermal (PV/T) systems
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Publication Year:
2015
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Publication Year:
2015
Abstract In a net zero energy building (nZEB), the energy demand from the operation of the building is met by renewable energy generated on site. Buildings require energy both in the form of heat and electricity, and solar energy utilization is important in order to reach a net zero energy balance. In projects with ambitious energy targets or limited available areas for local energy generation, solar thermal and photovoltaic (PV) installations will eventually compete for space on roofs and facades. Hybrid photovoltaic–thermal (PV/T) modules, in which heat and electricity is generated simultaneously, are therefore an interesting technology for building applications,…
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Organo Nanoclays as Insulating Materials in Alternative Concrete
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Publication Year:
2015
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Publication Year:
2015
Abstract Calcined marl was identified as an insulating binder substituent mate-rial for aerogel based mortars. Further synthesis of insulating organo-nanoclays through the incorporation of polyethylene glycol (PEG) or in situ polymerisation of polystyrene (PS) in clays displayed greater promises for further reduction of thermal conductivity independent of the compressive strength, unlike more con-ventional aerogel-incorporated concrete. The organo-nanoclays were characterized by Hot Disk thermal analyzer measurements. The results so far indicated the for-mation of organoclay particles from both ideal systems of bentonite and calcined marl with lowered thermal conductivities. The calcined clay appeared to maintain its binding properties, suitable for gelling…
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Performance of a lab-scale membrane-based energy exchanger
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Publication Year:
2015
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Publication Year:
2015
Abstract Efficient energy recovery from used air with the goal of reducing energy use is important for realizing low energy houses. Rotary heat exchangers are very energy efficient, but have the drawback of transferring odours from exhaust air to fresh supply air. To avoid this, flat plate heat exchangers are commonly used where odour transfer might cause problems. Nevertheless, these may not properly handle water condensation and frost formation at low outdoor temperatures. The so-called membrane-based energy exchangers are an alternative to the flat plate heat exchanger. In a membrane-based exchanger, moisture is transferred from the humid exhaust air to…
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Effective ventilation in high performance buildings
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Publication Year:
2015
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Publication Year:
2015
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Fra nullutslippbygg til nullutslippområder - hva kreves for å få til dette?
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Publication Year:
2015
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Publication Year:
2015
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Bygninger – bransjens bidrag til bærekraftig utvikling
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Publication Year:
2015
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Publication Year:
2015
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Strategier for utforming av smarte bygg i Zero Emission Buildings
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Publication Year:
2015
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Publication Year:
2015
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Naturlig ventilasjon i nullutslippsbygg
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Publication Year:
2015
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Publication Year:
2015
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Perspective of aerogel glazings in energy efficient buildings
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Publication Year:
2015
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Publication Year:
2015
Abstract The application perspective of aerogel glazings in energy efficient buildings has been discussed by evaluating their energy efficiency, process economics, and environmental impact. For such a purpose, prototype aerogel glazing units have been assembled by incorporating aerogel granules into the air cavity of corresponding double glazing units, which enables an experimental investigation on their physical properties and a subsequent numerical simulation on their energy performance. The results show that, compared to the double glazing counterparts, aerogel glazings can contribute to about 21% reduction in energy consumptions related to heating, cooling, and lighting; payback time calculations indicate that the return…
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User evaluation of the indoor climate of the first passive house school in Norway
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Publication Year:
2015
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Publication Year:
2015
Abstract The indoor climate of the first passive house school in Norway was evaluated with the aid of a questionnaire (Örebro) with approximately 340 respondents, and three interview rounds with a total of 23 informants. The intention was to reveal whether the users experienced any problems or possibly better conditions than in a regular school building. The interviews showed that, overall, the users were satisfied with the building. The survey showed generally good results for the indoor climate. Questionnaire results were compared with reference material consisting of data for average school buildings. The indoor climate of Marienlyst School was better…
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From Law to Turnkey: Negotiating Sustainability in Buildings
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Publication Year:
2014
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Publication Year:
2014
This PhD thesis provides an analysis of central processes related to the creation, negotiation and communication of the future sustainable building in Norway. Both researchers and practitioners have pointed at the Planning and Building Act as a central means to speed up the process and to set the frames for a sustainable development. Based on interviews with experts, I conclude that the building laws are never a direct translation of research results, EU directives and international agreements. These have to be translated, adapted and mediated, i.e. domesticated, to the Norwegian climate and cultural conditions. Particularly in Norway, building researchers consider…
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Transparent facades in low energy office buildings Numerical simulations and experimental studies
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Publication Year:
2015
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Publication Year:
2015
Windows are a key component in the building envelope. They are often, thought of as energy drains and something associated with excessive energy demands in a building. However, in order to assess the energy performance of a window, several factors must be addressed. The most important issues to consider are energy losses due to heat transmission through windows, energy gains from solar radiation as well as transmitted visible light and the influence on artificial lighting demands. Factors like thermal and visual comfort in buildings are additional factors that need to be assessed and addressed. Existing work that has been carried…
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Sustainability in Practice: Social Science Perspectives on Architectural Design, Research and the Implementation of Building Solutions
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Publication Year:
2014
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Publication Year:
2014
Fra et refleksivt praktiker-ståsted, undersøker avhandlingen utfordringer med kunnskapsintegrasjon på tvers av bygningssektorene. Et kritisk standpunkt blir testet konseptuelt og eksperimentelt i et tverrfaglig rammeverk som binder sammen litteratur fra arkitektur, byggvitenskap, byplanlegging og teknologi- og vitenskapsstudier (STS). Det empiriske grunnlaget for studien er intervjuer og spørreundersøkelser, som sammen utgjør et case fra Sveits. Avhandlingen evaluerer antagelser og praksiser knyttet til politikk for bærekraft og strategier for karbonreduksjon, i forhold til bygninger og det bygde miljøet. Studien er artikkelbasert, og rommer fire artikler som på forskjellige måter knytter teoretiske diskusjoner i feltet til praksis og politikkutvikling. Addressing the problem…
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Eit levande laboratorium. Eksperiment i nullutsleppsbygg på Gløshaugen
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Publication Year:
2016
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Publication Year:
2016
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Veien mot nullutslippsbygg
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Publication Year:
2015
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Publication Year:
2015
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Byggenæringen må ta og tar klimautfordringene på alvor
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Publication Year:
2016
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Publication Year:
2016
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ZEB Living Lab and Test Cell Lab
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Publication Year:
2015
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Publication Year:
2015
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Zero Emission Buildings – fra forskning til praksis – Nye muligheter med Living Lab og Test cell – Erfaringer fra demonstrasjonsbyggene
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Publication Year:
2015
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Publication Year:
2015
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Skal skape verdens mest klimavennlige kontorbygg
Publication Year:
2015
Publication Year:
2015
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Materialer i energi- og klimaregnskapet - Hvor viktig er det?
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Publication Year:
2015
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Publication Year:
2015
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