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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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2016
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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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Effect of storage and curing conditions at elevated temperatures on aerogel-incorporated mortar samples based on UHPC recipe
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2016
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2016
Abstract The effect of elevated temperature during storage and curing of ultra-high performance concrete (UHPC) formulated aerogel-incorporated mortar (AIM) samples was investigated. It was found that an effective aerogel loading of 60 vol% of total bulk volume was possible for producing AIM samples with suitable thermal and mechanical properties under optimized storing and curing conditions. AIM samples with compressive strengths of up to ≈19 MPa was achieved and the corresponding thermal conductivity was ≈0.4 W/(mK). For more insulating concrete, 70 vol% aerogel was needed and AIM samples with thermal conductivity as low as ≈0.1 W/(mK) were cast. In general, AIM samples with strengths of up…
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Embodied greenhouse gas emissions from PV systems in Norwegian residential Zero Emission Pilot Buildings
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2016
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2016
Abstract Greenhouse gas (GHG) emissions from the combustion of fossil energy need to be reduced to combat global climate change. For zero energy and Zero Emission Buildings (ZEB), photovoltaic solar energy systems are often installed. When the goal is to build a life cycle Zero Emission Building, all emissions come under scrutiny. Emissions from photovoltaic (PV) energy systems in Zero Emission Buildings have been shown to have a relative large share of material emissions. In this paper, we compare GHG emissions per kW h of electricity and greenhouse gas emission payback times (GPBT) for three residential PV systems in Zero Emission…
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Search for the optimal window-to-wall ratio in office buildings in different European climates and the implications on total energy saving potential
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2016
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2016
Abstract This paper deals with the search for the optimal window-to-wall ratio (WWR) in different European climates in relation to an office building characterized by best-available technologies for building envelope components and installations. The optimal WWR value is the one that minimizes, on an annual basis, the sum of the energy use for heating, cooling and lighting. By means of integrated thermal and lighting simulations, the optimal WWR for each of the main orientations was found in four different locations, covering the mid-latitude region (35° to 60° N), from temperate to continental climates. Moreover, the robustness of the results was…
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Accelerated ageing and durability of double-glazed sealed insulating windows panes and impact on heating demand in buildings
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2016
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2016
Abstract A crucial property for double-glazed sealed insulating window panes is to maintain their thermal insulating properties and thus low U-values. However, degradation and thus subsequent reduction or loss of low-conductance gas concentration may occur in the sealed glazing units by their exposure to outdoor climate. The choice of spacers is important to keep as low thermal transport through the window panes as possible, i.e. low U-value. In addition, the type of spacers may also influence their durability and resistance towards ageing, which hence may be characterized by the low-conductance noble gas concentration, e.g. argon, krypton or xenon. Ageing and…
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Compliance and deviation. How occupants interact with a high performance zero emission building
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2016
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2016
Abstract The Trondheim living lab is a newly built detached single family home that is planned to reach a zero emission balance over the course of its lifetime. This is achieved by a broad variety of technical strategies such as passive and active energy design and efficient installations. The degree of automation of the building's environmental services (such as heating, cooling, ventilation, and light) has been left open to be able to test different control scenarios: manual, automatic and several modes combining both approaches. In the first wave of qualitative experiments conducted in the laboratory between September 2015 and March…
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Conference presentations
Making a home in Living Lab: the limitations and potentials associated with living in a research laboratory
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2016
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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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Elektrokrome vindu for smart solstyring
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2016
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2016
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Metode for bærekraftig optimalisering av ventilasjonssystemer: PhD-kandidater ble tildelt best paper award
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2016
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2016
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Hvordan oppfylle ulike temperaturønsker i stue, soverom og bad med lavest mulig energibruk?
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2016
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2016
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Mulige energiforsyningsløsninger for områder som Zero Village Bergen
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2016
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2016
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Materialer i energi- og klimaregnskapet – Hvor viktig er det?
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2016
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2016
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Powerhouse Kjørbo. Evaluation of construction process and early use phase
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2016
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2016
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Nullenergi, plusshus, nullutslipp - hva betyr dette i praksis? Presentasjon av eksempler
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2016
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2016
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Forsvarsbygg: - I teten blant Norges grønneste bygg
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2016
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2016
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Byggenæringen må ta og tar klimautfordringene på alvor
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2016
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2016
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Eit levande laboratorium. Eksperiment i nullutsleppsbygg på Gløshaugen
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2016
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2016
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Nullutslippsbygg bidrar til grønt skifte
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2016
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2016
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Nye isolasjonsmaterialer i verneverdige bygg – muligheter og begrensninger
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2016
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2016
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Her skal studentene bo og leve i et laboratorium med utskiftbare vegger
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2016
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2016
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Prosjektet i mål - blant Norges mest energieffektive bygg
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2016
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2016
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Multilayer glazing technologies: key performance and future perspectives
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2016
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2016
AbstractPrevious studies show that a large part of the net energy demands of an office building is related to window heat loss and cooling demands induced by solar irradiance. Windows with improved thermal transmittance (U-value) and solar heat gain coefficient (SHGC or g-value) are important for reducing the related energy demands.There is a scarcity of available scientific work addressing multilayer window technologies. Hence, in this study, simulations with the aim of identifying the parameters that play a key role in improving thermal performance of multilayer glazing units have been carried out. A state-of-the-art review is presented, alongside an overview of…
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Two exemplar green developments in Norway: Tales of qualculation and Nonqualculation
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2016
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2016
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Books
ZEP-report 27-2016. SINTEF Academic Press. ISBN 978-82-536-1507-3
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2016
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2016
Abstract The Zero Village Bergen consists of a total floor area of ca. 92 000 m2, with more than 700 dwellings divided between terraced houses (68% of total floor area) and apartment blocks (25%) and some area dedicated to non-residential purposes such as offices, shops, and a kindergarten (7%). The project is currently in the planning phase and the strategy for achieving the ZEB-O goal1 is based on three steps: first, minimize energy demand through energy efficiency of the buildings; second, maximize PV generation on the buildings' footprint; and third, consider additional measures onsite and nearby (e.g. local heating system…
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Reports
Architectural design og Zero Emission Buildings - The case of the LivingLAB at the ZEB research centre
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2016
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2016
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Nanotech Based Vacuum Insulation Panels for Building Applications
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2016
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2016
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Books
A Review of Materials Science Research Pathways and Opportunities for Building Integrated Photovoltaics
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2016
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2016
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Nano-Based Thermal Insulation for Energy-Efficient Buildings
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2016
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2016
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Nye råd om bruk av konveksjonssperre
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2016
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2016
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Følge seg friskere i nullutslippshus
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2016
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2016
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Norway demonstrates zero emission buildings
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2016
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2016
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Professor savner solcellesatsing i Norge
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2016
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2016
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I superisolerte boliger er det spesielt ett rom som skaper problemer
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2016
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2016
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5 Zero Energy Dwellings at Skarpnes, Arendal
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2016
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2016
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ZEB Pilot buildings – overview
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2016
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2016
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A Review of Research Pathways and Opportunities for Building Integrated Photovoltaics from a Materials Science Perspective
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2016
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2016
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Development of a New Thermally Insulating and Structural Green Concrete for Lean Constructions
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2016
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2016
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Design phase calculation of greenhouse gas emissions for a zero-emission residential pilot building
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2016
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2016
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Simple modelling procedure for the indoor thermal environment of highly-insulated buildings heated by wood stoves
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2016
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2016
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Green leasing in theory and practice: A study focusing on the drivers and barriers for owners and tenants of commercial offices
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2016
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2016
Abstract This paper investigates the drivers and barriers for green leasing associated with the relationship between building owners and tenants, whilst also considering the extent to which this should be considered during the life cycle phases of a building. The procurement of appropriate rental property and its services is an important consideration for businesses. In terms of issues associated with this, few are more topical than factoring in sustainability. Emerging from this trend is a leasing product that deals with this directly. This product is a green lease. This not only impacts on the operations associated with a tenancy, but…
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Integrated ground source heat pumps and solar thermal systems for zero energy buildings
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2016
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2016
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Cost-optimal energy system design in Zero Energy Buildings with resulting grid impact: A case study of a German multi-family house
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2016
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2016
Abstract Zero Energy Buildings (ZEBs) are considered as one of the key elements to meet the Energy Strategy of the European Union. This paper investigates cost-optimal solutions for the energy system design in a ZEB and the subsequent grid impact. We use a Mixed Integer Linear (MILP) optimisation model that simultaneously optimises the building’s energy system design and the hourly operation. As a ZEB have onsite energy generation to compensate for the energy consumption, it is both importing and exporting electricity. The hourly time resolution identifies the factors that influence this import/export situation, also known as the building’s grid impact.…
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On the oversupply of heat to bedrooms during winter in highly insulated dwellings with heat recovery ventilation
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2016
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2016
Abstract The study presented in this paper originated from observations made regarding the thermal conditions during winter in highly insulated dwellings with mechanical ventilation with heat recovery (MVHR). Previous observations indicate an oversupply of heat to bedrooms and a successive extensive window ventilation, which leads to an increased space-heating demand. Detailed simulations were conducted to explain the causes for the observed thermal conditions and to elaborate improved solutions for heating and ventilation during winter. Various MVHR solutions and control strategies, as well as building design solutions, were investigated regarding their impact on the thermal conditions in bedrooms and on the…
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Nanoelectrochromics for Smart Windows: Materials and Methodologies
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2016
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2016
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