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Träfflista för sökning "hsv:(TEKNIK OCH TEKNOLOGIER) hsv:(Naturresursteknik) hsv:(Annan naturresursteknik) "

Sökning: hsv:(TEKNIK OCH TEKNOLOGIER) hsv:(Naturresursteknik) hsv:(Annan naturresursteknik)

  • Resultat 1-10 av 2584
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  • Nordelöf, Anders, 1975-, et al. (författare)
  • Less or different environmental impact?
  • 2013
  • Ingår i: Systems Perspectives on Electromobility 2013. - 978-91-980973-1-3 ; s. 60-75
  • Bokkapitel (övrigt vetenskapligt)
  • Odenberger, Mikael, 1977-, et al. (författare)
  • Prospects for CCS in the EU energy roadmap to 2050
  • 2013
  • Ingår i: Energy Procedia: International Conference on Greenhouse Gas Technologies (GHGT). - 1876-6102. ; 37, s. 7573-7581
  • Konferensbidrag (refereegranskat)
  • Adl-Zarrabi, Bijan, 1959-, et al. (författare)
  • Sustainability Assessment of Infrastructure Elements with Integrated Energy Harvesting Technologies
  • 2016
  • Ingår i: Energy and Environment. - 978-111930776-1 ; s. 221-234
  • Bokkapitel (övrigt vetenskapligt)abstract
    • The possibility of integrating energy harvesting devices into the bridge/tunnel structures along Coastal Highway Route E39 has been investigated in a feasibility study by the Norwegian Public Roads Administration (NPRA). The main advantage of integrating energy conversion devices in a structural element is the reduction of costs compared to stand-alone devices. The construction could be used as a foundation, a mooring point and provide a dry environment for electrical devices. Easy access to the production site could also reduce the cost for installation, operation and maintenance. Two important challenges related to harvesting renewable energy by infrastructure elements, without concerning about the energy source, are to store it or feed the energy to the grid. In the second case, tailoring generation to demand is of critical importance. Tasks such as supply and demand management, for instance, peak hour management, what kind of storage should be used - electrical or thermal - need be solved. Furthermore, integrating energy production devices in a structure might cause negative environmental impacts and affect the life expectancy and maintenance costs of such structures. The potential environmental impacts associated with renewable technologies are the consequences for bird life or marine fauna at the fjord crossing locations, as well as noise and visual impact. Thus, a sustainability assessment should be performed in order to quantify the ecological, economical and societal impacts of the suggested alternatives.
  • Ahlgren, Serina, et al. (författare)
  • Review of methodological choices in LCA of biorefinery systems - key issues and recommendations
  • 2015
  • Ingår i: Biofuels, Bioproducts and Biorefining. - 1932-104X. ; 9:5, s. 606-619
  • Tidskriftsartikel (refereegranskat)abstract
    • The current trend in biomass conversion technologies is toward more efficient utilization of biomass feedstock in multiproduct biorefineries. Many life-cycle assessment (LCA) studies of biorefinery systems have been performed but differ in how they use the LCA methodology. Based on a review of existing LCA standards and guidelines, this paper provides recommendations on how to handle key methodological issues when performing LCA studies of biorefinery systems. Six key issues were identified: (i) goal definition, (ii) functional unit, (iii) allocation of biorefinery outputs, (iv) allocation of biomass feedstock, (v) land use, and (vi) biogenic carbon and timing of emissions. Many of the standards and guidelines reviewed here provide only general methodological recommendations. Some make more specific methodological recommendations, but these often differ between standards. In this paper we present some clarifications (e.g. examples of research questions and suitable functional units) and methodological recommendations (e.g. on allocation).
  • de Klijn-Chevalerias, M., et al. (författare)
  • The Dutch approach for assessing and reducing environmental impacts of building materials
  • 2017
  • Ingår i: Building and Environment. - 0360-1323. ; 111, s. 147-159
  • Tidskriftsartikel (refereegranskat)abstract
    • © 2016 Elsevier LtdBuildings are one of the largest consumers of energy and materials, and hence they are also one of the largest contributors to negative environmental impacts. Traditionally, energy consumed by buildings during their operation phase was the most significant in their lifecycles and far exceeded the embodied energy. However, in contemporary low-energy buildings, the embodied energy is proportionally higher because of the prevalent use of energy-intensive materials. To determine the embodied energy and environmental impacts of building materials, the Dutch have developed an assessment method, which has also been adapted by BREEAM-NL. This paper offers an overview of the Dutch approach for assessing the environmental impacts of building materials and demonstrates its practical application. The use of the Dutch Assessment Method to identify, and quantify materials-related design improvements has been demonstrated through an exemplifying case study. It has been identified that the environmental impact of a building is largely influenced by the material choices made at the early design stage of the project.
  • Earon, Robert, et al. (författare)
  • Groundwater Resources Potential in Hard Rock Terrain : A Multivariate Approach
  • 2014
  • Ingår i: Ground Water. - John Wiley & Sons. - 0017-467X.
  • Tidskriftsartikel (refereegranskat)abstract
    • Groundwater resources are limited and difficult to predict in crystalline bedrock due to heterogeneity and anisotropy in rock fracture systems. Municipal-level governments often lack the resources for traditional hydrogeological tests when planning for sustainable use of water resources. A new methodology for assessing groundwater resources potential (GRP) based on geological and topographical factors using principal component analysis (PCA) and analysis of variance (ANOVA) was developed and tested. ANOVA results demonstrated statistically significant differences in classed variable groups as well as in classed GRP scores with regard to hydrogeological indicators, such as specific capacity (SC) and transmissivity. Results of PCA were used to govern the weight of the variables used in the prediction maps. GRP scores were able to identify 79% of wells in a verification dataset, which had SC values less than the total dataset median. GRP values showed statistically significant correlations using both parametric (using transformed datasets) and non-parametric methods. The method shows promise for municipal or regional level planning in crystalline terrains with high levels of heterogeneity and anisotropy as a hydrogeologically and statistically based tool to assist in assessing groundwater resources. The methodology is executed in a geographic information systems environment, and uses often readily available data, such as geological maps, feature maps and topography, and thus does not require expensive and time-consuming aquifer tests.
  • Eriksson, Mattias, et al. (författare)
  • Food waste reduction in supermarkets - Net costs and benefits of reduced storage temperature
  • 2016
  • Ingår i: Resources Conservation And Recycling. - 0921-3449. ; 107, s. 73-81
  • Tidskriftsartikel (refereegranskat)abstract
    • Food waste is a major problem and therefore measures are needed to reduce it. Since expired best-before date is a frequently cited cause of food waste in supermarkets, prolonging shelf life could reduce food waste. Longer shelf life could be achieved in different ways, e.g. reduced storage temperature. However, there is limited knowledge regarding the extent to which longer shelf life actually leads to reduced food waste, and whether the benefits of reduced waste exceed the increased energy costs of maintaining reduced storage temperature. Therefore this study calculated the net effect of reducing food waste in supermarkets by reducing the storage temperature through simulating the relationships between food waste reduction, longer shelf life, reduced storage temperature and increased energy costs.A case study was performed using three years of data on cheese, dairy, deli and meat product waste in six Swedish supermarkets, together with published data on microbiological growth at different temperatures and on the energy requirement for cold storage at different temperatures. Food waste was found to be reduced with lower storage temperature for all food products tested. This measure gave increasing net savings in terms of money and greenhouse gas emissions for meat products with decreasing storage temperature. Deli products had net savings close to zero, while for dairy and cheese products there were net losses, since the costs of reducing storage temperature exceeded the potential savings. Therefore, reducing storage temperature has the potential to reduce waste, but at a total net cost. However, a net benefit can be achieved if the measure is only introduced for products with high relative waste, low turnover and high value per unit mass. (C) 2015 Elsevier B.V. All rights reserved.
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