Striednig M.,HyCentA Research GmbH |
Brandstatter S.,HyCentA Research GmbH |
Sartory M.,HyCentA Research GmbH |
Klell M.,HyCentA Research GmbH |
Klell M.,University of Graz
International Journal of Hydrogen Energy | Year: 2014
A zero-dimensional thermodynamic real gas simulation model for a tank filling process with hydrogen is presented in this paper. Ideal gas and real gas simulations are compared and the entropy balance of the filling process is formulated. Calculated results are validated for a type I tank (steel vessel) with measurements. The simulation is used to accurately predict the maximum gas temperature during the refueling of pressurized gaseous hydrogen storages, which must not exceed 85 °C according to international standards. The influences of ambient temperature, initial pressure and pressure ramp rate on the resulting hydrogen gas temperature in the tank are investigated. In experiments, the effect of pressure pulses applied in practice on the resulting gas temperature is investigated as is the influence of the Joule-Thomson effect of hydrogen and methane. Finally simulations and experimental results are used to develop a refueling protocol for hydrogen powered industrial trucks, in operation at Europe's first indoor hydrogen filling station in Linz, Austria. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Klell M.,HyCentA Research GmbH |
Klell M.,University of Graz |
Eichlseder H.,University of Graz |
Sartory M.,HyCentA Research GmbH
International Journal of Hydrogen Energy | Year: 2012
Taking advantage of the multi-fuel ability of internal combustion engines, mixtures of hydrogen and methane as fuel allow a substantial reduction of CO2-emissions at affordable costs. By means of a prototype vehicle that was adapted for the operation with mixtures of methane and hydrogen and approved for road traffic, necessary technical adjustments and safety measures for gas-powered vehicles are explained. Synergies in production, storage, distribution, and combustion of mixtures of hydrogen and methane in terms of technical specifications, safety, regulations, and infrastructure are analyzed. In the EU blends of hydrogen and methane are seen as an interesting option to reduce emissions in vehicle traffic. Legislation is updated to include these blends. A survey of international regulations and standards for gas-powered vehicles is given, addressing issues of type-approval, fuel consumption and pollutant emission in detail. © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights.
Martin B.,Joanneum Research |
Gerfried J.,Joanneum Research |
Ewald W.,Fronius International GmbH |
Walter B.,OMV Austria Exploration and Production GmbH |
And 3 more authors.
2013 World Electric Vehicle Symposium and Exhibition, EVS 2014 | Year: 2014
An Austrian consortium of industry and research partners demonstrates a system solution for renewable hydrogen powered fuel cell range extender vehicles applied in intralogistics. The core element of this development, the 'HYLOG Fleet Energy Cell' by Fronius International, replaces the lead-acid battery in conventional battery-electric propulsion systems for warehouse logistics. In collaboration with Linde Material Handling a warehouse truck fleet of 10 class-3 vehicles has been adapted accordingly a t an Austrian site of the global logistics company DB Schenker. Renewable hydrogen is supplied by the oil and gas company OMV using a decentral biomethane steam reformer, installed onsite at the logistic facility. The warehouse trucks are fuelled indoors for the first time in Europe. Operation experiences show that warehouse logistics is in particular attractive for hydrogen and fuel cell technologies due to increased productivity, reduced maintenance and reduced life-cycle Greenhouse gas emissions. © 2013 IEEE.