Publications
The first phase of a Zero Emission Concept for an Office Building in Norway
Authors:
Publication Year:
2013
Authors:
Publication Year:
2013
Published in
Conference papers
The Effect of Wall-Integrated Phase Change Material Panels on the Indoor Air and Wall Temperature –Hot-box Experiments
Authors:
Publication Year:
2010
Authors:
Publication Year:
2010
Published in
Conference presentations
The actress concept. A new facade module for low energy buildings
Authors:
Publication Year:
2011
Authors:
Publication Year:
2011
Published in
Conference papers
Teknologien verden vil ha. Her er listen over store løsninger og bitte små dingser som kan redde klimaet. Kanskje kan de også gjøre livet godt å leve?
Publication Year:
2015
Publication Year:
2015
Published in
Media contributions
Teknologi testes i to spesialbygg
Publication Year:
2014
Publication Year:
2014
Published in
Media contributions
Download attachments:
Synthesis, characterization and durability of self-cleaning antireflection coatings for glazing applications
Authors:
Publication Year:
2014
Authors:
Publication Year:
2014
Published in
Conference papers
Synthesis of Hallow Silica Nanospheres by Sacrificial Polystyrene Templates for Thermal Insulation applications
Authors:
Publication Year:
2013
Authors:
Publication Year:
2013
Monodisperse polystyrene (PS) spheres with controllable size have been synthesized by a straight forward and simple procedure. The as-synthesized PS spheres have a typical diameter ranging from ~180 nm to ~900 nm, where a reduced sphere size is obtained by increasing the polyvinylpyrrolidone (PVP)/styrene weight ratio. The PS spheres function as sacrificial templates for the fabrication of hollow silica nanospheres (HSNSs) for thermal insulation applications. By modifying the silica coating process, HSNSs with different surface roughness are obtained. All resulting HSNSs show typically a thermal conductivity of about 20 mW/(mK), indicating that the surface phonon scattering is probably not significant…
Published in
Journal papers
Synthesis and Thermal Conductivity of Monodisperse Hollow Silica Nanospheres
Authors:
Publication Year:
2014
Authors:
Publication Year:
2014
Published in
Conference papers
Synthesis and Characterization of Sodium Tungsten Bronse Nanorods for Electrochromic Smart Window Applications
Authors:
Publication Year:
2013
Authors:
Publication Year:
2013
Single-crystalline sodium tungsten bronze (Na-WO3) nanorods with typical diameters of 10–200 nm and lengths of several of microns were prepared via hydrothermal synthesis. X-ray diffraction data showed that the as-prepared Na-WO3 nanorods crystallize in a hexagonal structure (space group P6 / mmm) with unit cell parameters a = 7.3166(8) Å and c = 3.8990(8) Å, and elongate along the <001> direction. The Na-WO3 nanorods had a mean chemical composition of Na0.18WO3.09·0.5H2O. The Na-WO3 nanorods exhibited a typical cathodic coloration related to proton insertion, indicating their potentials in electrochromic smart window applications.
Published in
Conference papers
Synthesis and characterization of aerogel glass materials for window glazing applications
Authors:
Publication Year:
2015
Authors:
Publication Year:
2015
Summary This chapter reports an approach to enhance the mechanical strength of silica aerogels via densification. Although the loss of porosity and consequently the increase of thermal conductivity of silica aerogels represent drawbacks related to the densification process, a combination of enhanced mechanical performance and optical transparency indicates that the densificated silica aerogels may be used as new glass material for window glazing application. Preliminary experimental results indicate lightweight (density 1.8 g/cm3, compared to 2.5 g/cm3 for float glass) and thermal insulating (thermal conductivity k ≈ 0.18 W/(mK), compared to about 0.92 W/(mK) for float glass) aerogel glass materials with high visible transparency…
Published in
Conference papers
Sustainable residential ventilation
Authors:
Publication Year:
2012
Authors:
Publication Year:
2012
Global warming due to increased emissions of CO2 has lead to more focus on decreasing energy consumption and greenhouse gas emissions caused by buildings. In Norway balanced ventilation with heat recovery is the most recommended solution for a low-emission building. However, a minority claims that a naturally ventilated house can be equally sustainable. To find out more about which concept is more sustainable, a model building with natural ventilation is compared to the same building with balanced ventilation in several cases. These are calculated in the computer-program SIMIEN, mainly with Oslo-climate. A sensitivity analysis of several parameters is also done.…
Published in
Reports
Sustainable refurbishment of Ellebo Housing Estate
Authors:
Publication Year:
2013
Authors:
Publication Year:
2013
Published in
Reports
Sustainable innovation in the building sector. An overview
Authors:
Publication Year:
2010
Authors:
Publication Year:
2010
Published in
Conference presentations
Sustainable innovation in the building sector. A user perspective
Authors:
Publication Year:
2010
Authors:
Publication Year:
2010
Published in
Conference presentations
Sustainable Facade Renovation. Using Dynamic Performance Simulations
Authors:
Publication Year:
2013
Authors:
Publication Year:
2013
Published in
Reports
Sustainable Energy Supply for Passive House Developments. 4 Norwegian Case studies
Authors:
Publication Year:
2010
Authors:
Publication Year:
2010
Published in
Conference presentations
Sustainable Energy Supply for Low Energy and Passive House Developments. 5 Norwegian Case Studies
Authors:
Publication Year:
2010
Authors:
Publication Year:
2010
Published in
Conference presentations
Sustainable Energy Supply for Low Energy and Passive House Developments. 5 Norwegian Case Studies
Authors:
Publication Year:
2012
Authors:
Publication Year:
2012
Published in
Conference presentations
Sustainability transitions outside the modernization paradigm. Gains and losses
Authors:
Publication Year:
2012
Authors:
Publication Year:
2012
Published in
Conference presentations
Sustainability in Practice: Social Science Perspectives on Architectural Design, Research and the Implementation of Building Solutions
Authors:
Publication Year:
2014
Authors:
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…
Published in
Reports
Sustainability assessment of nearly zero energy renovation of dwellings based on energy, economy and home quality indicators
Authors:
Publication Year:
2013
Authors:
Publication Year:
2013
A case study of a Norwegian detached house is used to evaluate the sustainability of two nearly zero energy renovation strategies. Energy demand, life cycle cost and home qualities are assessed as sustainability indicators. The Façade renovation strategy is an energy upgrade of the façade supplemented with high renewable energy production on site. The Ambitious renovation strategy is a total building envelope upgrade using passive house components and a lower on site renewable energy production. Both renovation strategies result in a 50–85% reduction of the heating requirement depending on the renewable energy production. The sustainability assessment was done as an…
Published in
Journal papers
Success for energy efficient renovation of dwelling - Learing from private homeowners
Authors:
Publication Year:
2013
Authors:
Publication Year:
2013
Large scale energy efficient renovation of buildings is one of the most important tools to realize the society's need of a more sustainable building stock. Most Norwegians own their own homes. Therefore private homeowners are a focus group for the government urging to accelerate the dwelling energy efficiency rates. Success factors were identified in the in-depth study of the decision process of eleven homeowners. Large differences in energy use due to the building's condition and the occupants' behavior was encountered in the sample. Only homeowners who were conscious consumers and did not trust expert advice or that had special knowledge…
Published in
Journal papers
Strategies for renovation of single family dwellings from the 1980s towards zero energy levels
Authors:
Publication Year:
2011
Authors:
Publication Year:
2011
Published in
Conference papers
Strategier for utforming av smarte bygg i Zero Emission Buildings
Authors:
Publication Year:
2015
Authors:
Publication Year:
2015
Published in
Conference presentations
Status ZEB – Zero Emission Buildings
Authors:
Publication Year:
2011
Authors:
Publication Year:
2011
Published in
Conference presentations
Status ZEB – Zero Emission Buildings
Authors:
Publication Year:
2010
Authors:
Publication Year:
2010
Published in
Conference presentations
Status fra Zero Emission Buildings på energiforsyning – Status for arbeidspakke 3. Utvikling av nye og forbdrede produkter og løsninger for energiforsyning og tekniske installasjoner
Publication Year:
2012
Publication Year:
2012
Published in
Conference presentations
Download attachments:
State-of-the-Art Building Integrated Photovoltaics
Authors:
Publication Year:
2012
Authors:
Publication Year:
2012
Published in
Journal papers
State-of-the-Art Building Integrated Photovoltaics
Authors:
Publication Year:
2012
Authors:
Publication Year:
2012
Published in
Conference presentations
State-of-the-Art Analysis of Nearly Zero Energy Buildings. Country Report IEA HPP Annex 40 Task 1 - Norway
Authors:
Publication Year:
2013
Authors:
Publication Year:
2013
Published in
Reports
Download attachments:
State of the art and the path to the building integrated photovoltaics of tomorrow
Authors:
Publication Year:
2014
Authors:
Publication Year:
2014
Published in
Conference papers
Spesielt, nytt og lærerikt
Publication Year:
2014
Publication Year:
2014
Published in
Media contributions
Download attachments:
Spectroscopic properties of hexagonal sodium tungstate nanorods
Authors:
Publication Year:
2015
Authors:
Publication Year:
2015
Abstract Sodium tungstate (Na-WO3) nanorods with typical diameters of 10-200 nm and lengths of several microns were prepared via hydrothermal synthesis. X-ray diffraction showed that the material crystallized in a hexagonal phase (space groupP6/mmm) with unit cell dimensions of a = 7.3166(8) Å and c = 3.8990(8) Å. The as-prepared Na-WO3 nanorods showed a distinctive visible-light-driven photochromism related to a proton-electron double injection process. The involved localstructural evolutions were monitored by Fourier transform infrared (FTIR) and Raman scattering spectroscopy. One diagnostic FTIR absorption at 585 cm-1 and one Raman band at 813 cm-1 were identified and assigned to the O-W-O stretching vibration. These two modes were strongly affected by the…
Published in
Conference papers
Spectral and angular solar properties of a PCM-filled double glazing unit
Authors:
Publication Year:
2015
Authors:
Publication Year:
2015
Abstract: Background Phase change materials (PCMs) have been proposed as a means to increase the thermal inertia of glazing systems. These materials have optical features that need to be investigated and characterised in order to better understand the potential of these systems and to provide reliable data for numerical simulations. Methods The spectral and angular behaviour of different PCM glazing samples, characterised by different thicknesses of PCMs, were investigated by means of commercial spectrophotometer and by means of a dedicated optical test bed that includes a large integrating sphere with a diameter of 0.75 m. Such equipment was necessary because…
Published in
Journal papers
Spectral and angular solar properties of a PCM-filled double glazing unit
Authors:
Publication Year:
2015
Authors:
Publication Year:
2015
Abstract Background Phase change materials (PCMs) have been proposed as a means to increase the thermal inertia of glazing systems. These materials have optical features that need to be investigated and characterised in order to better understand the potential of these systems and to provide reliable data for numerical simulations. Methods The spectral and angular behaviour of different PCM glazing samples, characterised by different thicknesses of PCMs, were investigated by means of commercial spectrophotometer and by means of a dedicated optical test bed that includes a large integrating sphere with a diameter of 0.75 m. Such equipment was necessary because of…
Published in
Journal papers
Published in
Books
Solutions and technologies for wood stoves in future's energy efficient residential buildings
Authors:
Publication Year:
2015
Authors:
Publication Year:
2015
Published in
Conference papers
Solar Shading Systems and Thermal Performance of Windows in Nordic Climates
Authors:
Publication Year:
2011
Authors:
Publication Year:
2011
Published in
Conference papers
Solar shading control strategies in cold climates – heating, cooling demand and daylight availability in office spaces
Authors:
Publication Year:
2014
Authors:
Publication Year:
2014
Abstract Modern office buildings often have large glazed areas. Incident solar radiation can lead to large cooling demands during hot periods although the solar radiation can help reduce heating demands during cool periods.Previous studies have shown that large parts of the net energy demand of an office building is related to window heat loss and cooling demands induced by solar irradiance. In this article, the authors found that, even in what traditionally has been considered to be a heating-dominated climate, cooling demands dominate the net energy demand of an office building. Solar shading systems are vital to reduce the cooling…
Published in
Journal papers
Solar Radiation Glazing Factors for Windows Panes, Glass structures and Electrochromic Windows in Buildings - Measurement and Calculation
Authors:
Publication Year:
2013
Authors:
Publication Year:
2013
Window panes, glass structures and electrochromic windows in buildings may be characterized by a number of solar radiation glazing factors, i.e. ultraviolet solar transmittance, visible solar transmittance, solar transmittance, solar material protection factor, solar skin protection factor, external visible solar reflectance, internal visible solar reflectance, solar reflectance, solar absorbance, emissivity, solar factor and colour rendering factor. Comparison of these solar quantities for different glass fabrications enables one to evaluate and thus select the most appropriate glass material or system for the specific buildings and applications. Measurements and calculations were carried out on various glass materials, including three electrochromic window devices,…
Published in
Journal papers
Published in
Books
Solar energy for zero energy buildings - a comparison between solar thermal, PV and photovoltaic-thermal (PV/T) systems
Authors:
Publication Year:
2015
Authors:
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,…
Published in
Conference papers
Social science perspectives on architectural design, research and the implementation of building solutions
Authors:
Publication Year:
2014
Authors:
Publication Year:
2014
Addressing the problem of knowledge integration across the building sectors, a critical stance is taken and tested conceptually, as well as experimentally within an interdisciplinary frame that draws together a number of key literatures from architecture, building science, urban studies, and STS. Empirically, the thesis is supported by a set of interviews and questionnaires that form a grounded case of Switzerland, which evaluates the assumptions and practices around sustainability policies and carbon reduction strategies for buildings and the built environment. As an article based dissertation comprised of four articles that are summarized below, the thesis aims to constructively connect theoretical…
Published in
Reports
Snow downfall on solar cell roofs - How to maximize solar efficiency?
Authors:
Publication Year:
2010
Authors:
Publication Year:
2010
Published in
Conference presentations
Snart har vi solceller i taket og nano i veggen
Publication Year:
2015
Publication Year:
2015
Published in
Media contributions
Smartere byer
Authors:
Publication Year:
2013
Authors:
Publication Year:
2013
Folk flest bor i byer. I dag bor over halvparten av jordas befolkning i byer, og innen 2050 forventes andelen å øke til to tredjedeler.
Published in
Popular Science Articles