Publications
Material research for zero emission buildings
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Publication Year:
2015
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Publication Year:
2015
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Material research for zero emission buildings
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Publication Year:
2015
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Publication Year:
2015
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Conference presentations
Marinlyst school – Comparison of simulated and measured energy use in a passive house school
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Publication Year:
2012
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Publication Year:
2012
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Marienlyst skole – Norges første passivhusskole
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Publication Year:
2010
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Publication Year:
2010
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Making a home in Living Lab: the limitations and potentials associated with living in a research laboratory
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Publication Year:
2016
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Publication Year:
2016
Abstract Living Lab is a two bedroomed detached house on the edge of the university campus in Trondheim. It is also a research laboratory which is testing state of the art technology committed to achieving Zero emissions within a 100m2 dwelling. The first qualitative experiment in Living Lab will take place from September 2015 to April 2016, when six different resident groups comprising of two to four people, will make Living Lab their home for a period twenty-five days each. The resident groups were chosen because they are associated with three basic demographic categories; students under 30 who are already…
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Low-emissivity materials for building applications: a state-of-the-art review and future research perspective
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Publication Year:
2015
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Publication Year:
2015
Abstract Low-emissivity (low-e) materials can be used in order to reduce energy usage in both opaque and transparent areas of a building. The main focus for low-e materials is to reduce the heat transfer through thermal radiation. Furthermore, low-e materials will also influence on the daylight and total solar radiation energy throughput in windows, the latter one often characterized as the solar heat gain coefficient (SHGC). This work reviews low-e materials and products found on the market, and their possible implementations and benefits when used in buildings. The SHGC is often left out by many countries in energy labellings of…
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Load Matching and Grid Interaction of Net Zero Energy Buildings
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Publication Year:
2010
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Publication Year:
2010
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Livssyklusanalyser av Powerhouse #1 på brattørkaia i Trondheim
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Publication Year:
2012
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Publication Year:
2012
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Lightweight and thermally insulating aerogel glass materials
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Publication Year:
2014
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Publication Year:
2014
Abstract Glass represents an important and widely used building material, and crucial aspects to be addressed include thermal conductivity, visible light transmittance, and weight for windows with improved energy efficiency. In this work, by sintering monolithic silica aerogel precursors at elevated temperatures, aerogel glass materials were successfully prepared, which were characterized by low thermal conductivity [k ≈ 0.17–0.18 W/(mK)], high visible transparency (Tvis ≈ 91–96 % at 500 nm), low density (ρ ≈ 1.60–1.79 g/cm3), and enhanced mechanical strength (typical elastic modulus Er ≈ 2.0–6.4 GPa). These improved properties were derived from a series of successive gelation and aging steps during the desiccation of silica aerogels. The involved sol → gel → glass transformation was investigated by means…
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Lifetime commissioning as a tool to achieve energy-efficient solutions
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Publication Year:
2011
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Publication Year:
2011
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Life-cycle assessment of a multi-family residence built to passive house standard
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Publication Year:
2012
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Publication Year:
2012
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Reports
Life Cycle GHG Emissions of Material Use in the Living Laboratory
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Publication Year:
2015
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Publication Year:
2015
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Life cycle GHG emissions from a wooden load-bearing alternative for a ZEB office concept
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Publication Year:
2015
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Publication Year:
2015
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Life Cycle Cost Perspectives on Zero Energy Renovation of a Single Family House
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Publication Year:
2012
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Publication Year:
2012
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Life cycle assessment integrated in the design of a new nano insulation material
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Publication Year:
2014
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Publication Year:
2014
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Life cycle analysis of two nZEB concepts
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Publication Year:
2014
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Publication Year:
2014
Abstract The net-zero emissions building (nZEB) performance is investigated for building operation (EO) and embodied emissions in materials (EE) for Norway's cold climate. nZEB concepts for new residential and office buildings are conceived in order to understand the balance and implications between operational and embodied emissions over the building's life. The main drivers for the CO2 equivalent (CO2e) emissions are revealed for both building concepts through a detailed emissions calculation. The influence of the CO2e factor for electricity is emphasized and it is shown to have significant impact on the temporal evolution of the overall CO2e emissions balance. The results…
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Life cycle analyses of CO2 emissions of alternative retrofitting measures
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Publication Year:
2014
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Publication Year:
2014
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Life cycle analyses of CO2 emissions of alternative retrofitting measures
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Publication Year:
2014
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Publication Year:
2014
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Large-scale experimental wind-driven rain exposure investigations of building integrated photovoltaics
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Publication Year:
2013
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Publication Year:
2013
Building integrated photovoltaics (BIPVs) are photovoltaic materials that replace conventional building materials in parts of the building envelopes, such as roofs or facades, i.e. the BIPV system serves dual purposes, as both a building envelope material and a power generator. Hence, it is important to focus on the building envelope properties of a BIPV system in addition to energy generation performance when conducting experimental investigations of BIPVs. The aim of this work was to illustrate challenges linked to the building envelope properties of a BIPV system, and to develop and evaluate relevant methods for testing the building envelope properties of…
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Large scale measurements and calculations of wall elements with vacuum insulation panels (VIPs)
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Publication Year:
2014
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Publication Year:
2014
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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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Kunnskapsstatus – Fuktbufring I materialer og påvirkning på energibehov
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Publication Year:
2015
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Publication Year:
2015
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Krav og forventninger til temperatur og luftkvalitet i fremtidens bygninger
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Publication Year:
2012
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Publication Year:
2012
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Kraftfullt miljøsatsing - Hvordan vi har jobbet for å få fram nye løsninger i Powerhouse?
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Publication Year:
2013
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Publication Year:
2013
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Kostnadseffektive teknologiløsninger for nullenergibygg i Norge. Hvilke virkninger vil dette ha for effektprofilen for fremtidens bygg?
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Publication Year:
2015
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2015
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Kontorbygget som produserer mer energi enn det bruker
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2014
Publication Year:
2014
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Konsekvenser av nye energiregler – Hva betyr egentlig de foreslåtte energikravene
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Publication Year:
2015
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Publication Year:
2015
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Kondensfare uluftede loft. Feltundersøkelse
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Publication Year:
2012
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Publication Year:
2012
Tradisjonelt har norske småhus hatt et kaldt loft med lufteåpninger i takutstikket. Luftingen av loftet skulle både sørge for en kald takflate og hindre fuktskader på undertak og taksperrer. De siste årene har det blitt vanligere at småhus bygges med et uluftet, kaldt loftsrom. I stedet brukes et dampåpent undertak og lufting under taktekkingen. En del slike loftsrom har fått kondens og vekst av muggsopp på undertaket. Denne rapporten viser årsaker og viktige tiltak for å unngå problemet.
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Reports
Klassifisering av robusthet
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Publication Year:
2012
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Publication Year:
2012
Rapporten inneholder et forslag til system for klassifisering av byggetekniske løsningers robusthet. Hensikten med et slikt klassifiseringssystem skal gjøre det lettere for aktører i byggenæringen å velge løsninger og materialer tilpasset ønsket kvalitetsnivå, stedlig klima og den utførendes kompetanse. Byggenæringen må i større grad enn tidligere forholde seg til mange produkter med til dels overlappende bruksområde. Det kan være svært vanskelig å få oversikt over forskjeller i teknisk kvalitet og hvilke produkter som er mest hensiktsmessig i det enkelte byggeprosjekt.
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Kicking the habit. What happens after people have decided to invest in energy efficient technologies?
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Publication Year:
2012
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Publication Year:
2012
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Key Elements of and Materials Performance Targets for Highly Insulating Window Frames
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Publication Year:
2011
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Publication Year:
2011
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Kan Powerhouse bli byggenæringens månelanding?
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Publication Year:
2012
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Publication Year:
2012
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Isolering og fuktsikring av yttervegger mot terreng. Målinger i forsøksvegg
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Publication Year:
2012
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Publication Year:
2012
Mange fuktproblemer viser at det er viktig å velge veggkonstruksjoner mot terreng med god sikkerhet mot skader. God sikkerhet mot kondensskader får man ved å plassere all isolasjon på utsiden eller inne i veggen. Men i svært mange nye byggeprosjekter i dag blir det benyttet en plass-støpt betongvegg som isoleres utvendig og innvendig. Den innvendige isolasjonen er ofte en bindingsverkvegg. Denne rapporten presenterer resultater fra målinger i et lite forsøkshus med en denne typen yttervegg mot terreng. Huset er bygd ved lokalene til SINTEF Byggforsk i Oslo
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Isolasjon i bygg «Å bygge energieffektivt handler om mye mer enn bare tykke vegger»
Publication Year:
2015
Publication Year:
2015
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Investigations of Accelerated Climate Aged Wood Substrates by Fourier Transform Infrared Material Characterization
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Publication Year:
2012
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Publication Year:
2012
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Investigation of the thermal properties and heat-storage reliability of a paraffin wax for LHTES application under direct solar radiation
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Publication Year:
2012
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Publication Year:
2012
In recent years, Thermal Energy Storage (TES) is becoming more and more important in different engineering applications. As far as the building sector is concerned, TES is considered a crucial feature to reach the net-Zero Energy Building (nZEB) goal. Commonly, TES in building is obtained using the sensible heat property of conventional building materials (building thermal inertia). The drawbacks of this strategy are: the low amount of thermal energy that can be stored; the overheating of the indoor environment that may occur if elevate amount of heat is collected by a conventional building material. On the contrary, the exploitation of…
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Investigation of the space-heating using wood stoves in very low-energy houses
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Publication Year:
2011
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Publication Year:
2011
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Investigation of the Air-Heating Concept for Norwegian Passive Houses
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Publication Year:
2013
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Publication Year:
2013
The German definition of the passive house standard is strongly related to the air-heating (AH) concept, while this concept is not explicitly connected with the Norwegian definition (NS 3700 standard). As AH presents an opportunity for space-heating (SH) simplification, the AH potential is here investigated in the Norwegian context. The questions of the required AH temperatures, of the temperature distribution between rooms and the influence of losses from ventilation ducts are investigated using detailed dynamic simulations (here using TRNSYS). This is done using a typical detached house typology, both considering different building construction materials as well as different climate zones…
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Investigation of space-heating strategies in very low-energy houses using dynamic simulations: case of decentralized wood stoves approaches
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Publication Year:
2011
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Publication Year:
2011
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Investigation of prototype membrane based energy exchanger
Publication Year:
2012
Publication Year:
2012
In order to minimize the energy use for heating, passive houses for residential use are constructed using heavy insulation. In addition, they have minimal air leakages and no vents in exterior walls for direct supply of fresh air, and thus, mechanical ventilation systems are a mandatory requirement in such buildings. With the aim of reducing energy use, efficient energy recovery from used air will be of high importance. In residential buildings with several living units, centralized air handling units are regarded as the most energy efficient system. However, to prevent odours to transfer between apartments it is important to avoid…
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Interventions on energy behaviour in non-residential buildings – a literature review
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Publication Year:
2014
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Publication Year:
2014
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Interior insulation retrofit of a historical brick wall using vacuum insulation panels: Hygrothermal numerical simulations and laboratory investigations
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Publication Year:
2014
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Publication Year:
2014
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