Electro Power Systems | Date: 2017-07-12
A method of supplying and purging a fuel cell (2) is provided, the method being implemented by means of a purging device (1) comprising: a supply duct (3) for supplying a reaction gas to the fuel cell (2), a purge duct (4) for purging the reaction gas sent to the fuel cell (2), a purge pump (6) suitable to make the reaction gas circulate in the purge duct (4), a shutdown duct (5) for shutting down the gas from the fuel cell (2), connected to the purge duct (4), a purge valve (7) placed upstream of the purge duct (4) and of the purge pump (6) and downstream of the fuel cell (2), an intermediate chamber (9) connected to the purge duct (4), to the supply duct (3) and to the shutdown duct (5) and positioned downstream of the purge valve (7), the purge pump (6) being suitable to put the intermediate chamber (9) in depression, the method comprising: a supply step (3) for supplying a reaction gas to the fuel cell (2), a purging step (4) for purging, at least in part, the reaction gas sent to the fuel cell (2) through activation of the purge pump (6), a depressurisation step for depressurising the intermediate chamber (9) by means of said purge pump (6) and of the purge valve (7), a second purging step, in which the purge valve (7) is open and the gases at least inside the fuel cell (2) are expelled through the shutdown duct (5) including on account of the intermediate, depressurised chamber (9).
Electro Power Systems | Date: 2017-07-05
There is provided a procedure for adjusting the composition of an electrolyte in a system (1) comprising a fuel cell (20), consisting of a solution having water as a solvent and a substance that increases the electrical conductivity thereof as a solute, the system (1) further comprising a reaction chamber (2) which uses the electrolyte, the procedure comprising a step of measuring the concentration of the solute in the electrolyte, a step of replenishing the solute in the electrolyte, functionally connected to the step of measuring the concentration of the solute, consisting of: a pre-mixing in water of the solute in the solid state in a mixing tank separate from the reaction chamber (2), with consequent dissolution of the solute and provision of a replenishing solution, and a subsequent introduction of the replenishment solution into the reaction chamber (2).
Agency: European Commission | Branch: H2020 | Program: FCH2-RIA | Phase: FCH-02.3-2014 | Award Amount: 2.36M | Year: 2015
HEALTH-CODE aims at implementing an advanced monitoring and diagnostic tool for -CHP and backup PEM fuel cell systems equipped with different stacks. Such a tool is able to determine the FC current status (condition monitoring) to support stack failures detection and to infer on the residual useful lifetime. Five failure modes will be detected: i) change in fuel composition; ii) air starvation; iii) fuel starvation; iv) sulphur poisoning; v) flooding and de-hydration. The main project objectives are: i) the enhancement of electrochemical impedance spectroscopy (EIS) based diagnosis; ii) the development of a monitoring and diagnostic tool for state-of-health assessment, fault detection and isolation as well as degradation level analysis for lifetime extrapolation; iii) the reduction of experimental campaign time and costs. Moreover, the improvement of power electronics for FC is also considered. These targets will be achieved through the implementation of several methodologies and techniques, well suited for industrial application. Several algorithms will be developed relying on on-board EIS measurements of the fuel cell system impedance. Moreover, low-cost diagnostic concepts are also proposed for a straightforward implementation on FCS controllers. The project exploits the outcomes of the previous FCH 1 JU funded project D-CODE, during which a proof of-concept validated in laboratory (TRL3-4) was developed. HEALTH-CODE will increase the TRL up to level 5. The exploitation of the project outcomes will lead to low-cost and reliable monitoring and diagnostic approaches and related applications (e.g. power electronics). These results will have an impact on stationary FCS with a direct increase in electrical efficiency, availability and durability, leading to a reduction in maintenance and warranty costs, thus increasing the customers satisfaction. Therefore, HEALTH-CODE contributes to the enhancement of FC competitiveness towards a wider market deployment.
Agency: European Commission | Branch: FP7 | Program: JTI-CP-FCH | Phase: SP1-JTI-FCH.2011.3.3 | Award Amount: 4.00M | Year: 2012
The FluMaBack (Fluid Management component improvement for Back up fuel cell systems) project aims at improving the performance, life time and cost of balance of plant (BOP) components of back up fuel cell systems specifically developed to face back-out periods of around 1,000h/year for specific markets: USA, Africa and North Europe where hard operative conditions are present (high and low temperatures). The improvement of system components addressed in this project will benefit both back-up and CHP applications. The project focuses on new design and improvement of BOP components for utilization in PEMFC based stationary power applications, aimed at: - improving BOP components performance, in terms of reliability; - improving the lifetime of BOP component both at component and at a system level; - reducing cost in a mass production perspective; - simplifying the manufacturing/assembly process of the entire fuel cell system. While in recent years the performance and durability of the PEMFC have increased and the cost has decreased at the same time, performance, durability and costs of BOP components have basically stayed the same. So, for improvements on performance, durability and cost of the fuel cell system, R&D dedicated on BOP components have become essential. The project is focussed on the most critical BOP components with the largest potential for performance improvement and cost reductions: - Air and fluid flow equipments, including subcomponents and more specifically blower and recirculation pumps - Humidifier - Heat exchanger Specific targets in terms of efficiency, lifetime and cost have been pointed out for each BOP component to be developed. The project will have a duration of 3 years to guarantee the achievement of all project targets. The consortium consists of large and small entities which are R&D centres, BoP components developers and manufacturers, fuel cells stack and fuel cell system developers and manufacturers. Partners are located throughout the EU: Italy, Spain, The Netherland and Slovenia.
Agency: European Commission | Branch: FP7 | Program: JTI-CP-FCH | Phase: SP1-JTI-FCH.2009.4.2 | Award Amount: 5.29M | Year: 2010
A total of 19 market-ready fuel cell systems from 2 suppliers (ElectroPS, FutureE) will be installed as UPS/ backup power sources in selected sites across the EU. Real-world customers from the telecommunications and hotel industry will utilize these fuel cell-based systems, with power levels in the 1-10kW range, in their sites. These units will demonstrate a level of technical performance (start-up time, reliability, durability, number of cycles) that qualifies them for market entry, thereby accelerating the commercialisation of this technology in Europe and elsewhere. The demonstration project will involve the benchmarking of units from both fuel cell suppliers according to a test protocol to be developed within the project. It will employ this test protocol to conduct extensive tests in field trials in sites selected by final users in Italy, Switzerland and Turkey. The performance will be logged and analysed to draw conclusions regarding commercial viability and degree to which they meet customer requirements, as well as suggesting areas for improvement. A lifecycle cost analysis using data from the project will be carried out to determine economic value proposition over incumbent technologies such as batteries or diesel generators. The system producers use the results to obtain valuable first hand feedback from customers, optimise their systems as needed, and demonstrate commercial viability. On the other hand, final users from the telecommunications and hotel industry will experience first-hand the advantages of fuel cells for their applications under real world conditions. The optimisation potential is expected from the production process itself, from the installation of a significant amount of fuel cell systems and from the testing. The project will also develop a certification procedure valid in the EU27 under the lead of TV Sd.
Electro Power Systems | Date: 2015-01-23
Electro Power Systems | Date: 2011-01-27
Electro Power Systems | Date: 2015-05-11
A fuel cell electric generator designed for back-up in the absence of network electricity supply. The generator comprises a fuel cell stack, means for supplying the stack with a first and a second reagent flow comprising, in turn, pressure reducing means, and a manifold body to communicate with the stack said first and second reagent flows and at least a flow of coolant fluid via a respective coolant loop. The manifold body comprises inside chambers for the mixing of said reagent flows with corresponding re-circulated product flows and a coolant fluid expansion chamber within which said pressure reducing means of said first and second reagent flows are positioned at least partially drowned by said coolant. Method for the start-up and shutdown of the generator, and a method for detecting the flooding of a fuel cell and a_method for detecting the presence of gas leakages in the generator are also disclosed.
Electro Power Systems | Date: 2011-10-04
The invention relates to a stack (200) comprising a plurality of stacked fuel cells (100), fixed and fluidically connected to a first head (210), which comprises: a feeding inlet (301) for a fuel flow and a corresponding outlet (302); a feeding inlet (303) for a comburent flow and a corresponding outlet (306); a feeding inlet (302) and a corresponding outlet (305) for a flow of a cooling heat-transfer fluid thermally coupled with the fuel cells (100) in order to remove at least part of the reaction heat at the fuel cells (100) themselves; the first head (210) comprising a feeding inlet (307) and a corresponding outlet (308) for a flow may pass, said volume being thermally coupled with the cooling heat-transfer fluid flow, so that the cooling heat-transfer fluid delivers at least some of the heat removed from the fuel sells (100) to the working heat-transfer fluid.
Electro Power Systems | Date: 2011-03-15
The invention relates to an electric power generator comprising a plurality of fuel cells stacked in a stack and configured to supply an electric load, the generator comprising means for generating a gas fuel to be supplied to the stack, and means for removing at least part of a heat flow generated in the stack as a consequence of the consumption of said gas fuel; characterized in that it comprises heating means configured to maintain said means for generating gas fuel within a predetermined temperature range and comprising means for transferring at least part of said removed part of the heat flow generated in the stack from said removing means to said means for generating gas fuel.