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Sustainability transitions outside the modernization paradigm. Gains and losses
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2012
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2012
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Impact on thermal comfort of conventional and advanced glazed façades in office buildings
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2012
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2012
Transparent façades are often used to increase the aesthetic value of the building and to provide visual contact with the outdoor. However, together with several positive features, it should be mentioned that glass façades may reduce the quality of the indoor thermal environment, causing thermal discomfort especially due to overheating in the summer season. The aim of this paper is to compare the implications on thermal comfort of different glazed façades, whose surface temperatures have been monitored during several experimental campaigns. The analyzed glazing systems were double skin façades and non conventional single skin façades integrating different materials (i.e. phase…
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Hva er forskjellen på passivhus, nesten nullenergi, nullenergi og plussenergi/energipositivt?
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2013
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2013
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Powerhouse Kjørboe - rehabilitering av kontorbygg til plussenergibygg
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2013
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2013
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Zero Emission Buildings vs Zero Energy Buildings
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2012
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2012
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Influence of user-behavior on the performance of the building and the energy supply system
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2012
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2012
It is becoming conventional approach to evaluate the building envelop losses using detailed dynamic tools such as EnergyPlus, ESP-r and TRNSYS. However, the user-related loads (and their variations) in the building are usually oversimplified during performance evaluation of those buildings and associated HV AC systems. This paper presents a methodology to evaluate the performance of buildings and their energy supply systems while taking into account the user-related loads (non-HV AC & DHW) at individual household levels. For this purpose, a single family house (two different insulation cases) built in Oslo climate using an alternate duty air to water heat pump…
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Retrofitting Timber Frame Walls with Vacuum Insulation Panels
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2012
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2012
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Impacts of Operating Hardware on Window Thermal Performance
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2012
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2012
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Behov for beregning, modellering og simulering; Historisk utvikling
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2012
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2012
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Hvilke programmer fins - brukbarhet og brukerterskel
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2012
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2012
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High Performance Thermal Building Insulation: Today's State of the Art
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2012
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2012
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Hvordan anser markedet denne type bygg?
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2013
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2013
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Fremtidens byggstatus på forskningsfronten
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2013
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2013
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Freeze protection method in ventilation system using two hydronic circuits
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Publication Year:
2011
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2011
Freeze protection in ventilation systems is important to avoid freeze damages and increase in maintenance costs. Freezing in a ventilation system can appear in construction and operation phase. The aim of this study was to test a new method for freeze protection in ventilation system. This method implies use of an additional heat exchanger. The method used two hydronic circuits: the first one with water on energy supply side, and second one with mixture of glycol and water at the secondary side. The mixture transfers heat from the energy source via an additional heat exchanger to the coil in the…
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Nye standarder for passivhus – NS 3700 og NS 3701/Prosjektrapport 42
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2012
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2012
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Hvordan realisere regjeringens ambisjoner?
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2013
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2013
Er "intellegente byer" veien å gå? Siden nesten 2/3 av vårt energiforbruk er tilknyttet urbane miljø, vil såkalte "Smart Cities" eller intellegente byer spille en betydelig rolle vedrørende energiffektivitet.
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Norsk byggebransje deltar nesten ikke i EUs forskning
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2012
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2012
Artikkel skrevet av Øyvind Aschehoug, prof.em. ved NTNU i Byggeindustrien
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Facade development in a Zero Emission Building perspective
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2012
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2012
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Verktøy for valg av energiforsyning
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2012
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2012
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Energieffektivisering i bygninger. Forsknings- og demonstrasjonsaktiviteter med utgangspunkt i ZEB
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2013
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2013
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Nye isolasjonsmaterialer - er nanoteknologi løsningen?
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2012
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2012
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Boligområdet Skarpnes i Arendal
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2012
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2012
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Livssyklusanalyser av Powerhouse #1 på brattørkaia i Trondheim
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2012
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2012
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Depotbygget på Haakonsvern, Bergen
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2012
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2012
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Powerhouse #1 på Brattørkaia i Trondheim
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2012
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2012
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FM towards zero emission buildings: Learning and professional development among energy operators of large buildings
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Publication Year:
2013
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2013
Drawing on theories from studies of Facilities Management (FM) and social studies of science and technology as well as explorative qualitative research methods the purpose of this paper is to examine energy operations of large, existing buildings and how knowledge development and knowledge transfers may provide lessons for how FM of existing buildings may contribute to transition towards zero emission buildings. In this energy operation of existing buildings is described as an important measure towards sustainability. The relevant actors explored for this study are related to large non-residential buildings (university), and different types of large housing facilities (health rehabilitation and…
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Ventilasjon og energigjenvinning i kaldt klima
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2012
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2012
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Small studies in architectural materiality
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2012
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2012
Within the frame of this exploratory essay, small studies in materiality are introduced as artifacts of relatively simple means, designer driven, and as useful in anchoring strategies to reflexively map research methods in art and design practices. Using concepts from science and technology studies (STS), a series of projects are contextually presented and modes of working are tracked. Small studies discusses how artists and designers can better position themselves to critically assess relationships between the complex, interconnected design issues they encounter in their artistic practices, and the methods they opt to employ. The essay concludes that in fields where art…
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Eksempler på nær nullenergibygg
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2013
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2013
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Status fra Zero Emission Buildings på energiforsyning – Status for arbeidspakke 3. Utvikling av nye og forbdrede produkter og løsninger for energiforsyning og tekniske installasjoner
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2012
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2012
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The impact of sustainable research initiatives: What really gets built?
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2011
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2011
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En teknisk entreprenørs utfordring i praksis
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2012
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2012
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Erfaringer med markedsutvikling for høye energiambisjoner
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2012
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2012
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Det store bildet. Hvor er vi nå?
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2012
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2012
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Presentasjon av Forskningssenteret ZEB
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2009
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2009
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CO2 emissions from Biofuels and District Heating
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Publication Year:
2013
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2013
Carbon Debt and Carbon Payback time have recently been introduced into the Norwegian debate on greenhouse gas emissions, challenging the established view that Biofuels are carbon neutral. This report demonstrates that these new concepts are primarily a reflection of how the temporal system boundaries for CO2 emissions from biofuels are viewed. In a short term perspective it is possible that CO2 emissions from biofuels may have a non-zero short term climate effect, even though biofuels will be carbon neutral on the order of a century. Two alternative, more useful new concepts for analysis of climate effects of biofuels are described…
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Reports
Kondensfare uluftede loft. Feltundersøkelse
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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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2012
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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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Reports
Powerhouse One - erfaringer med å utarbeide konseptet for et nullenergi-bygg
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2013
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2013
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User evaluation of vacuum insulation in clay blocks
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2013
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2013
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Energikonsepter for Ådland boligområde
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Publication Year:
2014
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Publication Year:
2014
I ZEB, og som en del av arbeidspakke 5 "Konsepter og strategier for nullutslippsbygg", er det gjennomført en studie av to energikonsepter for boligområdet Ådland i Bergen. Ådland ligger ved Flesland rett sør for Bergen sentrum. ByBo AS ønsker å bygge ut fra 500 – 800 boliger på området hvor både de enkelte boligene og området som helhet skal oppfylle kriterier for nullutslippsbygg. I ZEB er det definert ulike ambisjonsnivå for nullutslippsbygg. Den gjennomførte studien anbefaler et ambisjonsnivå ZEB-O som et gjennomsnitt for Ådland området. ZEB-O betyr at området skal være selvforsynt med energi, inklusive elektrisitet og varme, over et…
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A Norwegian ZEB-definition embodied emission
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Publication Year:
2014
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Publication Year:
2014
This report deals with how to define what a Zero Emission Building (ZEB) is with explanation and analysis of different parameters related to embodied emissions of CO2 equivalents. The report can be used as a guidance tool on how to assess embodied emissions, and also on what parameters should be evaluated in such an assessment. Different ambition levels for ZEBs may include life stages, operation, material, construction and end-of-life and can be documented according to EN 15978. Calculation procedures should include system boundaries, embodied emissions from materials, transport, the construction process and waste handling according to the ambition level. CO2 eq…
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Cooling of PV panels by natural convection
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Publication Year:
2013
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Publication Year:
2013
Building Integrated Photovoltaic (BIPV) is an important source of renewable energy production for Zero Emission Buildings, even in Norwegian climate. In the planned Powerhouse 1 building at Brattøra in Trondheim the idea to reach a zero emission building level is to use PVs as a roofing material covering the entire roof. Challenges and questions raised in the design process of this building have motivated the work reported here.
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Beregning av kuldebroverider for golv på grunn
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2013
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Publication Year:
2013
Denne rapporten begrenser seg til å presentere en metode for beregning av kuldebroverdier for tilslutningen mellom yttervegg og golv på grunn (ringmursløsninger). I både NS 3031 og NS‐EN ISO 10211 åpnes det for en forenklet beregning av kuldebroverdien etter en annen internasjonal standard; NS‐EN ISO 13370. Denne beskriver en forenklet prosedyre for beregning av U‐verdien til golv mot grunn basert på en korreksjon til U‐verdier beregnet etter NS‐EN ISO 6946.
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Dynamic Building Envelope Components and nearly Zero Energy Buildings: Theoretical and experimental analysis of concepts, systems and technologies for an adaptive building skin
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Publication Year:
2013
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Publication Year:
2013
Due to the significant impact of the building sector on greenhouse gas emissions, newer and stricter regulations aimed at reducing total energy use in buildings have appeared in the last few years. In the European context, all the new constructions will thus soon be asked to be nearly Zero Energy Buildings (nZEB). In order to reach this target, new concepts and technologies capable of further improving buildings’ energy efficiency need to be developed. A very promising strategy to overcome current technology limitations is represented by revisiting the conventional approach that considers the building as a static object and moves towards…
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