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This work reports results related to the “EU-FP7-HRC-Power” project aiming at\uddeveloping micro-meso hybrid sources of power. One of the goals of the project is to\udachieve surface temperatures up to more than 1000 K, with a ΔT ≤ 100 K, in order to be\udcompatible with a thermal/electrical conversion by thermo-photovoltaic cells. The\udauthors investigate how to reach that goal adopting swirling chambers integrated in a\udthermally-conductive and emitting element. The converter consists of a small parallelepiped\udbrick inside two separated swirling meso-combustion chambers, which heat up the\udparallelepiped, emitting material by the combustion of H2 and air at ambient pressure. The\udoverall dimension is of the order of cm. Nine combustion simulations have been carried\udout assuming detailed chemistry, several length/diameter ratios (Z/D = 3, 5 and 11) and\udequivalence ratios (0.4, 0.7 and 1); all are at 400 W of injected chemical power. Among the\udmost important results are the converter surfaces temperatures, the heat loads, provided to the\udenvironment, and the chemical efficiency. The high chemical efficiency,  > 99.9%, is due to\udthe relatively long average gas residence time coupled with the fairly good mixing due to\udthe swirl motion and the impinging air/fuel jets that provide heat and radicals to the flame

Swirling Combustor Energy Converter: H2/Air Simulations of Separated Chambers