
Laboratoire dEtudes et de Recherches sur le MAtériau Bois
Laboratoire dEtudes et de Recherches sur le MAtériau Bois
1 Projects, page 1 of 1
assignment_turned_in ProjectFrom 2012Partners:UL, ARIAMIS, Ecole Nationale d'Ingénieur de Saint Etienne / Laboratoire DIPI, SILENE, Ecole Nationale dIngénieur de Saint Etienne / Laboratoire DIPI +3 partnersUL,ARIAMIS,Ecole Nationale d'Ingénieur de Saint Etienne / Laboratoire DIPI,SILENE,Ecole Nationale dIngénieur de Saint Etienne / Laboratoire DIPI,Laboratoire dEtudes et de Recherches sur le MAtériau Bois,Laboratoire d'Etudes et de Recherche sur le Matériau Bois,SELF CLIMAT MORVANFunder: French National Research Agency (ANR) Project Code: ANR-12-SEED-0007Funder Contribution: 1,012,250 EURCogeneration - Combined Heat and Power generation by gas micro-turbine (micro-CHP) - is a very progressive industrial and ecological concept, since it can reach a very high efficiency up to 90%, and greatly minimize CO2 and NOX emission. Metals are currently used in gas micro-turbine applications, as their thermal, mechanical and dymanic characteristics are well known. However, metals are approaching their limit with respect to maximum operating temperature, and alternatives are being sought. To fully reveal its potentials, CHP turbine shall operate at very high temperature, about 1350°. The use of metallic materials is therefore no more possible and ceramic material must be considered. Ceramics present a promising alternative as they are generally lighter and having considerably higher strength at high temperatures, better refractory and corrosion-resistance than metals. Ceramic gas turbine can run at temperatures up to 1370°C compared to about 700°C of all-metal turbines. That is why ceramic turbines can achieve 30-40% greater efficiency than all-metal turbines. If high-temperature ceramics were incorporated through-out gas turbines in the electricity generation sector, 1.4 quads of energy could be saved annually (Data of U.S. Department of Energy, 2010). This Project aims to develop an innovative apparatus for low-power cogeneration of heat and electrical energy (2.0 kW power) operating with gaseous fuels such as natural gas or propane and adaptable to other fuels in the future. Within this system, the electricity will be produced by a micro-ceramic turbine driving an electric generator integrated into a rotating assembly mounted on gas bearings. Targeted outcomes are an electrical efficiency of about 28% to 30%. Miniaturised electric generator of original design will meet these technical specifications as well as safety requirements for electric devices. A total return (electricity + heat) is targeted close to 90% due to ceramic heat ecxhanger. Along with this, micro-CHP apparatus will feature extremely low pollution levels thanks to ceramic combustion chamber of a specific design. The Project propose radically innovative “integrated design- and manufacturing” approach to manufacture micro-CHP apparatus, since the straight-forward attempts for miniarturisation / ceramisation of metallic turbines have clearly shown their uselessness. To make a real step-forward in micro-CHP, the Project aims is to combine (i) innovative ceramic engineering powders specially tailored for high-temperature mecanical applications; (ii) a newly developed design of micro-turbines: helical internal channels that will replace classical miniaturized blades in the turbines; (iii) Selective Laser Sintering as manufacturing technolology as it is the unique currently existing production process allowing complex customised ceramic parts with controlled external and internal geometry. Two prototypes of cogeneration apparatus will be delivered and comprehensivelly characterised for their performance. An engineering study of micro-CHP implementation itno domestic heater will be also accomplished taking into account the existing relevant technical / explitation / safety reglamentations. A functional prototype of domestic cogenerator will be realised and tested in the industrial test-bench by project partner SILENE.
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