Displaying items by tag: Energyhttp://greensunrise.deTue, 28 Jun 2016 17:16:20 +0200Joomla! - Open Source Content Managementde-deMaking hydrogen usage more safehttp://greensunrise.de/index.php/get-in-contact/item/1533-making-hydrogen-usage-more-safehttp://greensunrise.de/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.

getincontact@numberland.com

 

  • Energy
  • Hydrogen
  • Usage
  • Power
  • Automobile
  • Car
    ]]>
    grond@numberland.de (Administrator)Get in ContactSat, 16 Jan 2016 20:59:52 +0100
    Manage energy smarter than beforehttp://greensunrise.de/index.php/get-in-contact/item/1529-manage-energy-smarter-than-beforehttp://greensunrise.de/index.php/get-in-contact/item/1529-manage-energy-smarter-than-beforeManage energy smarter than before

    Manage energy smarter than before

    ID: F1601-05

    Efforts to significantly boost the usage of renewable power are burdening power grids, leading to increased financial and ecological issues. An effort has created systems and methods to realise low-energy districts. Renewable energy supply fluctuates, and matching its demand and supply is becoming all the more challenging. Smart energy management systems and energy storage space systems are required to accommodate a big share of renewable energy in current energy infrastructure. A project set off to increase the use of on-site renewable power at region level by matching its power need and supply. Undertaking partners began by categorising different district kinds and analysing their different load profiles. They then mapped the gear that can be utilized in a district and examined their overall performance. Thermal storage space and smart control are key components of concept. Thermal storage enables a control system to match the supply and need of heat. Thermal storage technologies had been designed following research on novel storage methods. Team members developed a smart power management system to match supply and demand of electrical energy and temperature at the same time. A full-scale demonstration was successfully carried out by setting up the system in 106 dwellings and 9 commercial spaces in an innercity region under development. A simulation tool to evaluate new types of energy systems for existing and new areas was also created and implemented. To make the developed system appealing to end users and meet their increasing energy demands, the group developed a set of novel business models. They are all based on the freedom of the energy consumed or created within the district, and are incorporated into the system. The project envisioned a sustainable community that strives for financial, environmental and social stability. With fossil fuels expected to run out and the need for energy to boost, current energy supply systems are undergoing radical modifications. It helped enhance a number of types of thermal storage technologies to handle the variability of renewable power. In doing therefore, it demonstrated just how to fully exploit the potential of renewable energy.

    getincontact@numberland.com

     

    • Energy
    • Management
    • Power
    • Renewable
    • Grid
      ]]>
      grond@numberland.de (Administrator)Get in ContactSat, 16 Jan 2016 20:59:23 +0100
      Greener concretehttp://greensunrise.de/index.php/get-in-contact/item/1515-greener-concretehttp://greensunrise.de/index.php/get-in-contact/item/1515-greener-concreteGreener concrete

      Greener concrete

      ID: F1512-01

      Brand new concrete products have been designed to fulfill the competitive and cost-efficient requirements of the construction industry while at the same time reducing the sector’s effect on the environment. This will lead to the make of more sustainable and energy-efficient concrete for both ready-mixed and pre-cast applications. For the minute, the main exploitable outcomes concern several novel types of aggregates and binders made completely from second natural materials (such as plastic waste, electrical and electronic equipment waste, polyurethane foam and municipal solid waste), the combination of these novel items in an energy-efficient lightweight concrete made of all second materials along with a choice help tool to assist manage and share EU waste stream information. The lightweight, eco-friendly, cost-efficient and all-waste concrete products developed are applicable for both ready-mixed products (floor screed and flooring screed underlay) and pre-casted applications. Improvements in the power efficiency of structures built with this concrete were checked. The prototypes were additionally assessed in terms of their mechanical, thermal and acoustic insulation properties and fire resistance. An exploitation plan has today been created in purchase to drive forward concepts that are deemed to have commercial potential. This plan contains a complete list of exploitable outcomes, a description of each result, a description and a quick exploitation plan. Finally, the project’s outcomes will contribute towards reducing the embodied power and CO2 footprint of concrete through the replacement of conventional binders with novel binders made from second materials. The new tangible concepts created by combining these new novel aggregates and binders will provide improved thermal insulation properties, and enable architects and builders to integrate greater overall performance requirements in both design and construction.

      getincontact@numberland.com

       

      • concrete
      • construction
      • sustainable
      • Energy
      • efficient
      • CO2
      • Footprint
        ]]>
        grond@numberland.de (Administrator)Get in ContactWed, 23 Dec 2015 08:43:11 +0100
        Better membranes for fuel cellshttp://greensunrise.de/index.php/get-in-contact/item/1514-better-membranes-for-fuel-cellshttp://greensunrise.de/index.php/get-in-contact/item/1514-better-membranes-for-fuel-cellsBetter membranes for fuel cells

        Better membranes for fuel cells

        ID: F1510-10

        A gas cellular can produce electrical energy through a chemical reaction between a gas and oxygen. Those that use a proton-conducting polymer membrane as the electrolyte are known as proton exchange membrane (PEM) gas cells. These are semipermeable membranes generally made from ionomers and created to carry out protons while being impermeable to gases. Nevertheless, until now, PEM fuel cells have actually unsuccessful mostly because of mechanical failure of the membrane. To increase their durability and life time, a new project had been founded. One of the absolute most common and commercially available PEM materials is the fluoropolymer perfluorosulfonic acid (PFSA). The project made great strides in obtaining low equivalent-weight (EW) PFSA ionomers with improved mechanical properties contrasted to the state of the art. Benchmark ionomers may have been hitherto the best materials in the lab. Nevertheless, the task proved that they were not the best in terms of durability when membrane layer electrode assemblies (MEAs) were assessed after 100 hours of continuous procedure. To this end, experts utilized reduced EW ionomers in their bid to prepare membranes with robust mechanical properties. Their approaches relied on the usage of chemical, thermal, and processing and filler reinforcement techniques. In particular, the focus had been on checking out ionic cross-links during emulsion polymerisation and membrane layer casting. This approach leads to non-linear ionomer molecules with large molecular weight that overcome problems linked with membrane layer dimensional changes – i.e. swelling. Researchers also used electrospinning to produce organic and inorganic fibres for mechanically reinforcing the low EW standard ionomers. Through nanofibre reinforcement, scientists reported significant improvement of mechanical properties of the last membranes and greater durability, with conductivity being greater contrasted to the benchmark membrane. Another technique to mechanically strengthen the standard ionomers had been through ionic cross-linking based on nanoparticles. A number of membranes had been prepared utilizing nanoparticle fillers of different hydrophobicity. With in situ tests designed to accelerate mechanical degradation, the stabilised MEAs demonstrated improved durability, with less than 3 % voltage loss after 2 000 hours of operation.

        getincontact@numberland.com

         

        • Energy
        • Source
        • Fuel
        • Cell
        • Membrane
          ]]>
          grond@numberland.de (Administrator)Get in ContactTue, 27 Oct 2015 21:11:56 +0100
          Towards a Li-air batteryhttp://greensunrise.de/index.php/get-in-contact/item/1510-towards-a-li-air-batteryhttp://greensunrise.de/index.php/get-in-contact/item/1510-towards-a-li-air-batteryTowards a Li-air battery

          Towards a Li-air battery

          ID: F1510-06

          A Li metal anode as an alternative of graphite and the use of oxygen (O2) from the atmosphere as a cathode guarantees up to 10 times greater energy thickness. However, O2 decrease following response with Li-ions leads to deposition of a solid item within cathode porosities and to cathode clogging. Scientists addressed this problem with a radical approach perhaps not yet tried. Traditional metal-air batteries, as well as fuel cells, rely on three-phase contact points inside the cathode. The connections guarantee electron transport, hydrogen transportation and O2 influx. Nevertheless, in the situation of Li-air, this operating configuration changes the porosity and hydrophobicity of the cathode because of the development of the reduction products at the three-phase contact points. In groundbreaking studies, the group investigated a two-phase contact-point electrode setup (a flooded setup). The electrolyte or charge carrier is also used as the O2 carrier to harvest O2 from ambient air through an outside O2 harvesting device. The idea employs environmentally benign ionic liquid electrolytes and nano-structured electrodes that harvest dry O2 from the atmosphere. Experts ready and tested anode and cathode materials, developed the O2 harvesting concept, and prepared and integrated into the electrode systems numerous ionic liquids as well as solid polymer electrolytes. Fundamental studies provided physicochemical parameters for the model of a complete Li-air battery pack. Although the useful execution of Li-air batteries is not anticipated for another ten years or two, LABOHR has made a major share to the development work. Studies confirmed the value of utilizing ionic liquid-based electrolyte solutions to deal with solvent reactivity and volatility issues, and highlighted the issues of operating the Li-air battery in three-phase configuration. The idea of soluble redox ‘shuttle’ also opened a new possible course toward useful Li/O2 battery. In the meantime, the studies of electrolytes and electrode materials are most likely to discover short-term application in the Li-ion battery field.

          getincontact@numberland.com

           

          • Energy
          • Storage
          • Air
          • Lithium
          • Battery
            ]]>
            grond@numberland.de (Administrator)Get in ContactTue, 27 Oct 2015 22:11:36 +0100
            Nano technology for hydrogen storagehttp://greensunrise.de/index.php/get-in-contact/item/1509-nano-technology-for-hydrogen-storagehttp://greensunrise.de/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.

            getincontact@numberland.com

             

            • Nano
            • Technology
            • Energy
            • Storage
            • Carbon
            • Hydrogen
              ]]>
              grond@numberland.de (Administrator)Get in ContactTue, 27 Oct 2015 22:11:30 +0100
              Nano Technology against Emissionshttp://greensunrise.de/index.php/get-in-contact/item/1508-nano-technology-against-emissionshttp://greensunrise.de/index.php/get-in-contact/item/1508-nano-technology-against-emissionsNano Technology against Emissions

              Nano Technology against Emissions

              ID: F1510-04

              The usage of fossil fuels has developed a quantity of problems for which countries are intensively developing solutions to boost sustainability. All solutions require some type of separation and purification, which is currently achieved through primarily energy-intensive processes such as absorption, cryogenic separation and distillation. Polymer membranes are considered one of the absolute most energy-efficient methods for separating gases. However, many polymers either have actually low permeability or are not selective toward one gasoline over another. A project therefore developed novel polymers that effectively separate gas mixtures. The project looked at proper combinations of nanofillers with microcavities inside them that have actually well-defined size and porosity dispersed in advanced nanoporous polymers. Addition of nanofillers such as carbon nanotubes, zeolites, mesoporous oxides and metal-organic frameworks permitted increasing the polymer-free volume and creating preferential networks for mass transportation. Other than developing large amount polymers such as polynorbornenes, researchers also produced polymers of intrinsic microporosity. Such polymers are unable to pack effectively in the solid state and therefore trap enough free volume. Due to their contorted framework, they allow fast transport of tiny gas particles. Scientists developed a new polymerisation effect based on old chemistry – Tröger's base formation – that allowed them to prepare an extremely stiff polymer framework. Prospective programs of the technique should expand far beyond planning polymers just for gas separation membranes. Due to its extreme rigidity, the polymer functions as a molecular sieve, hindering transportation of larger gasoline molecules. To become an attractive alternative, pervaporation membranes need to be improved to become highly selective for ethanol over water. The task significantly improved understanding of fouling processes occurring at the membranes to enhance ethanol data recovery from fermentation broth. The project's innovative membrane layer technology should also offer an alternative to conventional processes for CO2 separation in energy stations. Despite their prospective, the polymer materials require to be scaled to enable further analysis of the separation procedure.

              getincontact@numberland.com

               

              • Nano
              • Technology
              • Emission
              • Fossil
              • Fuel
              • Energy
                ]]>
                grond@numberland.de (Administrator)Get in ContactTue, 27 Oct 2015 22:11:25 +0100
                More carbon fibre for carshttp://greensunrise.de/index.php/get-in-contact/item/1506-more-carbon-fibre-for-carshttp://greensunrise.de/index.php/get-in-contact/item/1506-more-carbon-fibre-for-carsMore carbon fibre for cars

                More carbon fibre for cars

                ID: F1510-02

                In addition to being lightweight for gas efficiency, high-performance composite materials for the transport sector should have the potential to be used in fast manufacturing procedures. Presently, production volumes tend to be restricted to a few hundred or a few thousand products per year for aerospace or recreations automobile applications. A project changed that by developing two brand new high-volume materials for carbon fibre-reinforced plastic (CFRP) components for vehicles. The first developed system was advanced polyurethane (PU) thermoset matrix materials that showed improved mechanical overall performance and reduced period times whenever compared with the many frequently utilized epoxy matrix. Replacing this traditional matrix system with PU also enabled combining fast curing with high toughness and a large glass change temperature. Addition of nanoparticles in PU allowed further improvements in processing – reduced resin viscosity and effect kinetics – as well as in thermal and electric properties. Consortium partners built demonstrators making use of this brand new material in structural parts of a vehicle. These included the inner bonnet, rear seat back panel, and the B-pillar between the front door and the back home. Another breakthrough was to hybridise self-reinforced composites (SRCs) – polypropylene (PP) and polyamide – with carbon fibres. The task then followed a number of techniques to develop two SRC versions. In the very first instance, a little quantity of carbon fibres permitted SRC stiffness to increase without reducing toughness. In the 2nd instance, bigger quantities resulted in increased toughness, with rigidity remaining large. Reduced production times were accomplished through the thermoforming procedure.
                The advanced materials produced outcome in quick cycle times, showing unique promise for cost-effective, higher-volume manufacturing of high-performance CFRP parts.

                getincontact@numberland.com

                 

                • Energy
                • Carbon
                • Fibre
                • Car
                • Lightweight
                  ]]>
                  grond@numberland.de (Administrator)Get in ContactTue, 27 Oct 2015 22:11:14 +0100
                  Better materials for better LEDshttp://greensunrise.de/index.php/get-in-contact/item/1505-better-materials-for-better-ledshttp://greensunrise.de/index.php/get-in-contact/item/1505-better-materials-for-better-ledsBetter materials for better LEDs

                  Better materials for better LEDs

                  ID: F1510-01

                  Keeping great promises for reduced energy usage and high conversion efficiencies, lighting fixtures with solid-state light sources have the possible to revolutionise the lighting industry. Additional improvements in light-emitting efficiency at high currents, with excellent color making at low expense would considerably speed up the widespread uptake of the technology. A new project is investigating the materials for these improved lighting products by developing new large-area semi-polar templates utilizing sapphire and silicon substrates. These semipolar templates help reduce the inbuilt electric fields in LEDs which affect their color security and effectiveness and supply a big area, low cost platform for the growth of the LED levels. The task is additionally making use of the indium aluminium gallium nitride (InAlGaN) material for the light-emitting layers, focusing on blue and yellow emission. A major challenge is patterning of the wafer to produce and coalesce semi-polar planes on the structured sapphire substrate. To this end, experts are assessing the impact of substrate fine orientation and growth parameters through X-ray measurements, luminescence and atomic-scale imaging. Metalorganic and hydride vapour phase epitaxy are used to develop levels on the substrates. The active light-emitting material comprises of quantum wells that have actually large optical efficiency and excellent color purity. Project partners used the HVPE technique to overgrow GaN on top of a GaN layer grown by MOVPE that had been at first prepared on pre-structured sapphire. InGaN layers had been then grown on semi-polar GaN templates with various growth conditions. Semi-polar InGaN structures with different thicknesses had been optimised, reaching large transformation light-emitting efficiencies in the blue and yellow spectra. A move from growing products on semi-polar substrates is assisting to overcome issues related to decrease in LED light-emitting efficiency. Changing present lighting technologies with solid-state lighting based on InGaN LEDs should enable a decrease in electrical energy by up to 5 %.

                  getincontact@numberland.com

                   

                  • Energy
                  • LED
                  • Light
                  • Source
                  • Optics
                    ]]>
                    grond@numberland.de (Administrator)Get in ContactSat, 03 Oct 2015 22:07:04 +0200
                    Waste heat for energyhttp://greensunrise.de/index.php/get-in-contact/item/1499-waste-heat-for-energyhttp://greensunrise.de/index.php/get-in-contact/item/1499-waste-heat-for-energyWaste heat for energy

                    Waste heat for energy

                    ID: F1509-05

                    Just a fraction of the energy released by burning fossil fuels is transformed into mechanical or electricity energy with many of the energy released as heat and written down as a loss. Thermoelectric materials developed by an EU-funded project may provide the solution to this energy problem. Between one half and two thirds of the fossil fuels burnt to generate energy are dissipated as heat into the atmosphere. While it's long been understood that waste heat can be converted into power the performance of very early thermoelectric power generation systems was so low that it restricted their programs. Thermoelectric generators are essentially devices designed to convert temperature directly into electricity utilizing two materials and a heat gradient. The greater the heat difference between the 'hot' side and the 'cold' side the greater the energy that can be produced. Within the a project the focus was to design thermoelectric generators that could be mass produced for use in automotive waste heat data recovery. Especially, two little thermoelectric generators have been designed: one based on silicide materials and another on telluride materials. Silicide and lead telluride (Pb/Te) based materials had been synthesised and then processed using spark plasma sintering to produce thermo-electric materials with performance similar to that discovered in the literature. The thermoelectric products have been integrated with control and energy electronics. The most appropriate solution was selected for mounting onto a hot air testrig where the exhaust of a 2litre gas automobile was simulated to establish its overall performance. This, in addition to estimated manufacturing and offering costs, had been used to evaluate the new technology's commercial attractiveness. When completed the system will draw out waste heat from the exhaust that will deliver direct current electrical power to the car electric system and hence reduce the alternator need offering enhanced fuel effectiveness by as much as 5 %.

                    getincontact@numberland.com

                     

                    • Energy
                    • Waste
                    • Heat
                    • Thermoelectric
                    • Material
                      ]]>
                      grond@numberland.de (Administrator)Get in ContactMon, 28 Sep 2015 09:32:56 +0200