Abstract
An investigation is performed of the filtrational combustion of gaseous hydrocarbons inside a spherical nozzle manufactured from porous Ni-Al material. The porous material is produced using the process of self-propagating high temperature synthesis, which allows an article of the desired configuration, chemical composition and porosity to be fabricated within a single technological stage. A combustion mode is demonstrated, wherein the combustion wave is localized inside the wall of the porous nozzle. Under this condition, up to 70 % of the total heat value of the fuel mixture is converted into IR flux radiated from the surface of the nozzle, with the maximum lying within the wavelength region 3–11 μm. A number of promising applications of new porous materials for designing new energy conversion devices are shown.
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