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  • 1.
    Arrhenius, Karine
    et al.
    RISE - Research Institutes of Sweden, Biovetenskap och material, Kemi och material.
    Fischer, Andreas
    RISE - Research Institutes of Sweden, Biovetenskap och material, Kemi och material.
    Büker, Oliver
    RISE - Research Institutes of Sweden, Säkerhet och transport, Mätteknik.
    Methods for sampling biogas and biomethane on adsorbent tubes after collection in gas bags2019Inngår i: Applied Sciences, E-ISSN 2076-3417, Vol. 9, nr 6, artikkel-id 1171Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Biogas is a renewable energy source with many different production pathways and numerous excellent opportunities for use; for example, as vehicle fuel after upgrading (biomethane). Reliable analytical methodologies for assessing the quality of the gas are critical for ensuring that the gas can be used technically and safely. An essential part of any procedure aimed at determining the quality is the sampling and transfer to the laboratory. Sampling bags and sorbent tubes are widely used for collecting biogas. In this study, we have combined these two methods, i.e., sampling in a gas bag before subsequent sampling onto tubes in order to demonstrate that this alternative can help eliminate the disadvantages associated with the two methods whilst combining their advantages; with expected longer storage stability as well as easier sampling and transport. The results of the study show that two parameters need to be taken into account when transferring gas from a bag on to an adsorbent; the water content of the gas and the flow rate used during transfer of the gas on to the adsorbent. © 2019 by the authors.

  • 2.
    Flansbjer, Mathias
    et al.
    RISE - Research Institutes of Sweden, Säkerhet och transport, Safety.
    Williams Portal, Natalie
    RISE - Research Institutes of Sweden, Säkerhet och transport, Safety.
    Vennetti, Daniel
    RISE - Research Institutes of Sweden, Säkerhet och transport, Safety.
    Verification of the structural performance of textile reinforced reactive powder concrete sandwich facade elements2019Inngår i: Applied Sciences, E-ISSN 2076-3417, Vol. 9, nr 12, artikkel-id 456Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    As a part of the SESBE (Smart Elements for Sustainable Building Envelopes) project, non-load bearing sandwich elements were developed with Textile Reinforced Reactive Powder Concrete (TRRPC) for outer and inner facings, Foam Concrete (FC) for the insulating core and Glass Fiber Reinforced Polymer (GFRP) continuous connectors. The structural performance of the developed elements was verified at various levels by means of a thorough experimental program coupled with numerical analysis. Experiments were conducted on individual materials (i.e., tensile and compressive tests), composites (i.e., uniaxial tensile, flexural and pull-out tests), as well as components (i.e., local anchorage failure, shear, flexural and wind loading tests). The experimentally yielded material properties were used as input for the developed models to verify the findings of various component tests and to allow for further material development. In this paper, the component tests related to local anchorage failure and wind loading are presented and coupled to a structural model of the sandwich element. The validated structural model provided a greater understanding of the physical mechanisms governing the element's structural behavior and its structural performance under various dead and wind load cases. Lastly, the performance of the sandwich elements, in terms of composite action, was shown to be greatly correlated to the properties of the GFRP connectors, such as stiffness and strength

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