The objective of the present project is to advance development work on a porous medium burner with an integrated heat exchanger. This burner does not work as a catalytic combustor, but burns with flames within the pores of a porous medium. Combustion in porous media offers an interesting and potentially promising route towards burners with high power density, high power dynamic range and very small amounts of emission products.
The research and development work of this project is based on results of Porous Medium Burner with integrated Heat Exchanger (PMB-HE) developments at the LSTM-ERLANGEN. In a first step, VIESSMANN will build burner prototypes, consisting of a water-cooled housing with an integrated heat exchanger spiral in a porous medium. INSULCON will provide the ceramic materials for all the PMB-HE prototypes and develop special forms of the ceramics materials, so that combustion, heat exchange and mechanical and thermal stability of the ceramic parts are optimised. A first set of tests will be run for this first prototype, in order to ensure that it provides low-emission combustion (CO < 5ppm, NOx < 5ppm) and high efficiency. Then, detailed radiation heat transfer computations will be carried out at IST-LISBON. Computations using full detailed chemistry will be performed at IC-LONDON to provide the theoretical background for the study of emission characteristics. The combustion control systems will be established by PKO-OSMO.
In a second step of the project, the burner design towards a ceramic burner will be improved by all partners.
The final stage of the project aims at a burner that has as many ceramic parts as possible and is technically and economically sensible.
Expected Achievements and Exploitation
Within 18 months, the goal of the present project is to provide compact gas burner and heat exchanger units with the following advantages in comparison to existing household heating systems :
The system will be of the order 10-15 times smaller in volume than the existing burner and heat exchanger systems.
The porous medium burner will show a dynamic range of 20:1 and will, hence, provide the wide-ranged power control needed in household heating systems.
The burner will provide excellent emission values comparable to the best gas burners currently on the market, and with the scope for significant improvements depending on the mode of operation.
Stable combustion is ensured for a wide range of gas properties and a wide range of air/fuel ratios, hence, being insensitive to variations in gas mixture properties.
Funding SchemeCSC - Cost-sharing contracts
4650 AC Steenbergen Nb
35108 Allendorf - Eder