Displaying items by tag: Hydrogenhttp://www.sixsigma-tools.comSat, 28 May 2016 19:05:24 +0200Joomla! - Open Source Content Managementde-deMaking hydrogen usage more safehttp://www.sixsigma-tools.com/index.php/get-in-contact/item/1533-making-hydrogen-usage-more-safehttp://www.sixsigma-tools.com/index.php/get-in-contact/item/1533-making-hydrogen-usage-more-safeMaking hydrogen usage more safe

Making hydrogen usage more safe

ID: F1601-09

As a power provider, hydrogen inspires a great deal of enthusiasm and more than a little wariness. a task addressed security problems related to the usage of hydrogen technologies. Hydrogen fuel cell (HFC) technology will initially be commercialised for market-ready applications such as backup energy supply, portable power generation and powering of materials handling automobiles. These programs generally need, by nature or for safety reasons, that hydrogen systems be used inside. However, current regulations, codes and standards (RCSs) are extremely incomplete regarding the practical requirements of security requirements inside. Addressing the safe indoor usage of HFC systems for early markets had been the primary objective of the project. The project desired to supply scientific and engineering understanding for indicating cost-effective means to control dangers, and to develop state-of-the-art security guidelines. It addressed understanding gaps regarding interior hydrogen accumulation, vented deflagration and under-ventilated jet fire. The created knowledge should be translated into security tips, including modern engineering tools supporting their execution. Recommendations should be developed for advancements in the EU and worldwide RCS frameworks to support the safe introduction of HFC in very early markets. Task partners sought to enhance understanding of hydrogen dispersion and accumulation in confined areas. Work centered on a room-like enclosure of typically a few tens of cubic metres with normal ventilation. Based on current and new analytical and numerical models, partners worked on determining characteristic regimes of hydrogen dispersion. Parameters such as the size of the venting location, the size of the enclosure area and the leak flow rates were taken into account. A number of experiments had been carried out to study vented hydrogen–air deflagrations and the interplay between hydrogen–air and enclosure parameters with respect to overpressure effects. Another task was to perform experimental and numerical studies on hydrogen jet fire characteristics. Focus was placed on parameters such as self-extinction, re-ignition, radiation and flame length from outside hydrogen jet fires. Feasible security methods should be given in a tips document with important rules for indoor hydrogen use in the designs. Additional safety products should be proposed whenever sizing techniques are maybe not enough to respect the safety rules.



  • Energy
  • Hydrogen
  • Usage
  • Power
  • Automobile
  • Car
    grond@numberland.de (Administrator)Get in ContactSat, 16 Jan 2016 20:59:52 +0100
    Nano technology for hydrogen storagehttp://www.sixsigma-tools.com/index.php/get-in-contact/item/1509-nano-technology-for-hydrogen-storagehttp://www.sixsigma-tools.com/index.php/get-in-contact/item/1509-nano-technology-for-hydrogen-storageNano technology for hydrogen storage

    Nano technology for hydrogen storage

    ID: F1510-05

    One of the biggest hurdles for unveiling carbon-free vehicles that are driven by hydrogen stays finding a material capable of keeping enough hydrogen. Unfortunately, neither compressed hydrogen gasoline nor liquefied hydrogen is most likely to be capable of sufficient volumetric thickness. A new project created theoretical modelling, synthesis, characterisation and evaluation of novel nanocomposite materials for hydrogen storage space. It combined the newest developments in metal hydrides – compounds that bind hydrogen and launch it upon heating – with unique principles for tailoring material properties. Experimental work had been geared towards integrating metal hydride nanoparticles into nanocarbon templates that served as scaffolds to form nanocomposites. Cryo-infiltration had been one of the novel methods used for planning such composites. Researchers enhanced properties such as working temperature and stress, simplicity of reversibility of binding, and conversation between hydrides and the environment for improved security. Coating hydride nanoparticles into self-assembled polymer levels or encapsulating them in polymer shells provided stability and security against oxidation. NANOHY introduced advanced techniques such as inelastic or small-angle neutron scattering for investigating nano-confined systems. Experts demonstrated for the first time nanodispersion of complex hydrides into a microporous carbon scaffold. Magnesium hydride, amongst the best-studied metal hydrides, was shown to show modified thermodynamic properties when integrated into the porous carbon supports. Experts concluded that these thermodynamic effects are restricted to reversible hydrides and particles with sizes less than 2 nm. Finally, scientists successfully scaled up nano-confined hydrides and incorporated them into a laboratory test tank with promising results – a real breakthrough in the hard issue of hydrogen storage space for a hydrogen economy. The hydride nanoparticle demonstrated excellent cyclability, getting rid of the need for a catalyst. Twenty hydrogenation/dehydrogenation cycles had been performed. Except for hydrogen storage, other areas could benefit from this research, such as development of battery materials with greater storage capacities, better safety and improved cyclability. The task disseminated its findings in a number of magazines and at seminars and workshops.



    • Nano
    • Technology
    • Energy
    • Storage
    • Carbon
    • Hydrogen
      grond@numberland.de (Administrator)Get in ContactTue, 27 Oct 2015 22:11:30 +0100
      Hydrogen from biologic wastehttp://www.sixsigma-tools.com/index.php/get-in-contact/item/1452-hydrogen-from-biologic-wastehttp://www.sixsigma-tools.com/index.php/get-in-contact/item/1452-hydrogen-from-biologic-wasteHydrogen from biologic waste

      Hydrogen from biologic waste

      ID: F1504-08

      More than 130 million tonnes of biological waste іs produced еvery yеar in Еυropean countries, from kitchen areaѕ, gardens, rеstаυrants and the mеаls prоceѕsing industry. This waste constitutes an enormous υntapped sоurcе of energy аnd other resourсeѕ, suppliеd it can be effectively prepared. Therefore people are wοrking to develоp a bioreactor for the production of H2 from such biological waste streams.
      Researchers have analуѕеd different sourceѕ of waste, includіng grass сuttings, strаw, аnd freѕh fruit and νegеtаbles dіscardеd by suреrmarkеts. Тheу hаvе аdditiоnally tested the impact of dіfferent pre-treatments making use of steam, dіlute chemicalѕ and enzymeѕ on fіnal hydrogen уield.
      Bactеria of the genυs Caldicellulоѕiruрtor were сhosen bеcauѕe thеy рerformed well in previoυs expеriments on hydrogen manufacturing. Researchers addіtiоnally investigated a numbеr οf methods to mοnitor the bioreactοr аnd to сollect H2.
      A labоratory-sсale bioreactor that performed well іn еνaluating will now be υp-ѕcaled to а pilot scale. Sciеntiѕts studied аnd οptimised the procedures taking locаtion within this bioreactor prototype.



      • Hydrogen
      • Generation
      • Biological
      • Waste
      • Production
      • Bioreactor
        grond@numberland.de (Administrator)Get in ContactTue, 21 Apr 2015 09:45:23 +0200