Publications
A zero emission concept analysis of a single family home
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Publication Year:
2013
Authors:
Publication Year:
2013
The main aim of the work has been to do modeling and calculations of the energy use, embodied emission and the total CO2-emission for a typical Norwegian residential building. By doing this we try to reveal and study the main drivers for the CO2-emission, and also which performance is necessary for components and solutions in a Zero Emission Building according to the current Norwegian ZEBdefinition.
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Proposal of a Norwegian ZEB definition: Storylines and Criteria
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Publication Year:
2010
Authors:
Publication Year:
2010
A clear and agreed definition of Zero Emission Building (ZEB) is yet to be achieved, both internationally and in Norway. However, it is understood that both the definition and the surrounding energy supply system will affect significantly the way buildings are designed to achieve the ZEB goal. Since the energy system in Europe is expected to change significantly in the coming decades, especially for electricity, it is indispensable to tie the definition of ZEB to possible scenarios on such development of the energy system. A scenario is defined as a combination of options chosen within a framework of different uncertain…
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Vinduer for framtiden - Resultater fra forskning
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Publication Year:
2011
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Publication Year:
2011
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Energy performance assessment of an advanced integrated façade through experimental data analysis
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Publication Year:
2014
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Publication Year:
2014
Abstract This paper deals with the experimental assessment of the energy performance of two Advanced Integrated Façade modules (AIF) characterized by two very similar configurations. The two AIF modules were installed on the south-exposed façade of an outdoor test cell facility (a real-scale mockup of an office building) and continuous measurements were carried out for more than one year. Data collected during the experimental campaign were analyzed to evaluate the energy performance and thermo-physical behaviour of the AIF modules. The performances of the two systems were assessed by comparison and by means of conventional and advanced synthetic metrics. The results…
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Retrofitting with VIPsCase study: house from the 1930’s
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Publication Year:
2010
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Publication Year:
2010
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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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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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Fiber reinforced hollow silica nanospheres for thermal insulation applications
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Publication Year:
2015
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Publication Year:
2015
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Mulige energiforsyningsløsninger for områder som Zero Village Bergen
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Publication Year:
2016
Authors:
Publication Year:
2016
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Energy use consequences of ventilative cooling in a ZEB residential building
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Publication Year:
2015
Authors:
Publication Year:
2015
Abstract New buildings have to satisfy ever-tightening standards regarding energy efficiency and consumption. This results in higher insulation levels and lower air leakages that reduce heating demands. However, even at moderate outdoor temperatures these buildings are easily warmed up to such a degree that in order to ensure acceptable indoor environment quality, removal of excess heat becomes unavoidable. Use of electric energy related to mechanical cooling is considered incompatible with achieving zero energy buildings (ZEB). The use of ventilative cooling (VC) in combination with mechanical cooling means energy consumption reduction due to lower use of mechanical ventilation and cooling system.This…
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Zero Emission Buildings – et nytt forskningssenter for miljøvennlig energy
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Publication Year:
2009
Authors:
Publication Year:
2009
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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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Integrated ground source heat pumps and solar thermal systems for zero energy buildings
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Publication Year:
2016
Authors:
Publication Year:
2016
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Influence of PV technology and system design on the emission balance of a net zero emission building concept
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Publication Year:
2016
Authors:
Publication Year:
2016
Abstract This paper presents an analysis of how the design of a photovoltaic (PV) system influences the greenhouse gas emission balance in a net zero emission building (nZEB). In a zero emission building, the emissions associated both with the energy required in the operation of the building (operational emissions) and the energy used to produce the building materials (embodied emissions) are offset by renewable energy generated on-site (avoided emissions). The analysis is applied to a nZEB concept for a single-family building, developed by the Norwegian Research Centre on Zero Emission Buildings. Previous analyses have shown that the installation of a…
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Fremtidens miljøvennige bygninger
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Publication Year:
2009
Authors:
Publication Year:
2009
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Zero Emission Buildings vs Zero Energy Buildings
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Publication Year:
2012
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Publication Year:
2012
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Sustainable innovation in the building sector. A user perspective
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Publication Year:
2010
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Publication Year:
2010
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Powerhouse One - erfaringer med å utarbeide konseptet for et nullenergi-bygg
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Publication Year:
2013
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Publication Year:
2013
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A numerical model to evaluate the thermal behaviour of PCM glazing system configurations
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Publication Year:
2012
Authors:
Publication Year:
2012
The adoption of Phase Change Materials (PCMs) in building components is an up-to-date topic and a relevant number of research activities on this issue is currently on the way. A particular application of PCMs in the building envelope focuses on the integration of such a kind of material into transparent envelope components. A numerical model that describes the thermo-physical behaviour of a PCM layer in combination with other transparent materials (i.e. glass panes) is developed to perform numerical analyses on various PCM glazing systems configurations. The paper illustrates the structure of the model, the main equations implemented and the hypotheses…
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Fuktbufring i materialer og påvirkning på energibehov – en kunnskapstatus
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Publication Year:
2015
Authors:
Publication Year:
2015
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Zero Village Bergen. Fremtidens bærekraftige boligomraade
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Publication Year:
2015
Authors:
Publication Year:
2015
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Silica aerogels - A multifunctional building material
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Publication Year:
2015
Authors:
Publication Year:
2015
Abstract Silica aerogels are a nanoporous material with extremely high porosity (up to ~99.8 %), low density (as low as ~0.005 g/cm3), and low thermal conductivity (~0.010–0.020 W/(mK)). Aerogels can also be made with a translucent or transparent state. These structural and functional features make aerogels a multifunctional material for many important applications. In this work, we discuss the perspective of aerogels as super insulation materials and window glazings in the building and construction sector. It shows that different research and development (R&D) strategies of aerogels shall be considered when aiming for different applications; reducing the manufacture cost, improving the…
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Fra energisluk til nullenergihus – Hvor god tid har vi ?
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Publication Year:
2010
Authors:
Publication Year:
2010
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Miljøvennlig varmeforsyning til lavenergi- og passivhus. En casestudie.
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Publication Year:
2010
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Publication Year:
2010
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The Impacts on Solar Access and Energy Demand of Different Building Masses in Linear Buildings Forms
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Publication Year:
2012
Authors:
Publication Year:
2012
The main direction of the thesis is analyzing the impact on solar access and energy demand of different building mass in linear building forms. The study model of this work is a current ongoing project - a suburb sustainable residential community design project locates in Ådland, Bergen, Norway. The work mainly consists of two parts: theory and project analyses. Both two parts are focusing on reducing environmental impact of suburb sustainable residential communities. More specifically, the theory is aiming on finding out the critical design and energy issues for suburb sustainable residential communities. The project is aiming on using the…
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Pilot eposide: Is Snøhetta’s energy-positive house the answer to our sustainable prayers?
Publication Year:
2014
Publication Year:
2014
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A numerical model to evaluate the thermal behaviour of PCM glazing systems
Authors:
Publication Year:
2012
Authors:
Publication Year:
2012
The adoption of Phase Change Materials (PCMs) in building components is an up-to-date topic and a relevant number of research activities on this issue are currently on the way. A particular application of PCMs in the building envelope focuses on the integration of such a kind of material into transparent envelope components. A numerical model that describes the thermo-physical behaviour of a PCM layer in combination with other transparent materials (i.e. glass panes) has been developed to perform numerical analyses on various PCM glazing systems configurations. The paper illustrates the structure of the model, the main equations implemented and the…
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Conference papers
Passiv - Lavenergi - Nesten null - Plusshus. Begreper, definisjoner og prinsipper
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Publication Year:
2012
Authors:
Publication Year:
2012
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Forholdet mellom nullenergi og nullutslipp
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Publication Year:
2012
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Publication Year:
2012
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Sustainable residential ventilation
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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.…
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Large-scale experimental wind-driven rain exposure investigations of building integrated photovoltaics
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Publication Year:
2013
Authors:
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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Journal papers
Aerogel in Expanded polystyrene (EPS)experimental investigations
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Publication Year:
2010
Authors:
Publication Year:
2010
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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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Unikt laboratorium baner veien mot nullutslipphuset
Publication Year:
2012
Publication Year:
2012
Vegger og vinduer får juling av sol, regn og frost i en ny klimasimulator i Trondheim, Den skal hjelpe byggebransjen med å gjøre drømmen om bygg uten utslipp av klimagasser til en realitet
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Energy Desing of Sandwich Masonry Blocks
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Publication Year:
2012
Authors:
Publication Year:
2012
Sandwich elements are widely used in the building envelope, in walls and foundations in particular. The thickness of sandwich elements is increasing as the demand for reduced heat loss from the building envelope is required. The building industry is searching for means and alternative materials to reduce the volume of the building envelope, but at the same time obtain the same thermal performance. Sandwich element constructions might be suitable for highly effective insulation materials as VIPs (Vacuum Insulation Panels). The possibilities of optimizing the thermal performance and by the same time decreasing the thickness and reducing the volume of aggregated…
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Validation of user profiles for building energy simulation
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Publication Year:
2013
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Publication Year:
2013
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Calcined clay as an alternative binder: A further step towards achieving thermally insulating structural concrete based on aerogel
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Publication Year:
2015
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Publication Year:
2015
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Hourly Electricity Load Modelling of non-residential Passive Buildings in a Nordic Climate
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Publication Year:
2015
Authors:
Publication Year:
2015
Abstract Detailed knowledge of electricity demand is essential for power system planning and operation. EUs 20-20-20 targets will increase the development of more energy efficient buildings as all new buildings shall be “nearly zero energy buildings” by 2020. The result from this ambition is that so-called passive buildings and nearly-net-zero-energy-buildings (nZEB), with lower energy demand, or even onsite power generation, will significantly change the way buildings are integrated in the power system. System operators must consequently prepare for changes in load profiles. However, the knowledge on the aggregated impact of nZEBs is so far limited because the actual number of such buildings is still very small. This paper contributes to this knowledge…
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Aerogel vs. argon insulation in windows: A greenhouse gas emissions analysis
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Publication Year:
2016
Authors:
Publication Year:
2016
Abstract The scope of this study is a comprehensive analysis of the greenhouse gas emissions from the partial substitution of triple-glazing units with argon gas (U-value of 0.79 W/m2 K) with double-glazing units with either monolithic aerogel (U-value of 0.65 W/m2 K) or granular aerogel (U-value of 0.31 W/m2d K). A residential building located near Oslo and fully upgraded with passive house solutions is used as a case study for this analysis. A cradle-to-site analysis is performed on the facade components. Two replacement schedules and three window-to-wall ratios are used to evaluate the differences in total emissions. Sensitivity analyses based on increasing the fraction of the…
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Development of a New Thermally Insulating and Structural Green Concrete for Lean Constructions
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Publication Year:
2016
Authors:
Publication Year:
2016
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A net zero emission concept analysis of a single-family house
Authors:
Publication Year:
2014
Authors:
Publication Year:
2014
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The research centre on Zero Emission Buildings – ZEB
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Publication Year:
2011
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Publication Year:
2011
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Zero Emission Buildings – produkter og løsninger for eksisterende bygninger
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Publication Year:
2012
Authors:
Publication Year:
2012
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Greenhouse gas analysis of insulation options in residential energy retrofitting
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Publication Year:
2013
Authors:
Publication Year:
2013
In the pursuit of stricter energy standards for buildings to reduce their share of energy use, the use of highly efficient insulation materials like aerogel and vacuum insulation has opened a path towards lighter construction in energy retrofitting, whereas commercially available materials, such as EPS and mineral wool, result in massive wall solutions. However, these new materials are notoriously energy intensive in production, resulting in high levels of embodied energy and emissions. This work describes a comprehensive greenhouse gas analysis of the use of different insulation materials applied to residential building upgrades to passive house standard. It estimates the potential…
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Design phase calculation of greenhouse gas emissions for a zero-emission residential pilot building
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Publication Year:
2016
Authors:
Publication Year:
2016
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