The use of regenerative energy sources and new building standards has led to decrease of thermal energy consumption in modern single- and multi-family houses. Out of these boundary conditions new requirements arise for heating energy systems with regard to power range. Beside low pollutant emissions, high combustion efficiency and low electrical power consumption are priorities of the development. Within this study as well the area of operation as the dynamic processes of start, stop and load changes of a burner module, which is independent of the system, were investigated. The combustion system includes evaporation of the liquid fuel in a porous medium, mixture preparation supported by cool flames and surface stabilised combustion. The metal carrier of the surface burner offers the advantage of geometric design flexibility. As a result of this, the surface arrangements contribute to the intensification of mass transport in the secondary reaction zone. As combustion method internal flame cooling based on external exhaust gas recirculation was examined with a view to decreasing nitrogen oxide emissions and extending the operation area. The numerical research of the vaporisation system was supported by CFD-simulations, which reflect the macroscopic behaviour of the porous structure by means of representative, transport determining sizes. The transport sizes and as well pore as solid matrix characteristics were calculated from idealised and real porous media by means of microstructure simulations.
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