Skip to main content
European Commission logo print header

Optimization of the design and development of low pollution high efficiency natural gas boilers

Ziel


Numerical codes have been developed:
The Coherent Flame Model has been implemented in the CFM code. Originally the CAST code was used as the CFM description but it cannot describe the flow field in an industrial boiler in which a number of obstacles are present. As a consequence a new code has been written for simulation of the combustion. It has been validated by comparing the code results to measurements made on a research burner.

A combustion code based on the well stirred burner (foyer homogène) has been developed. Work has been done to extend the use of the well stirred burner model for describing a diffusion flame where large variations of gases (CO2, H2O and hydrocarbons) concentrations take place. The code has been simplified to be able to describe the chemical reaction with high accuracy in order to be able to accurately describe the formation of pollutants such as CO and NOx.

Physical analyses have been performed and models for heat transfer developed:
Physical models for convective and radiative heat transfer have been developed and implemented in the code. The radiative model used has been adapted and validated for description of industrial burners where large variations of gases (CO2, H2O and hydrocarbons) concentrations take place.

New experimental procedures have been developed:
Continuous gas sampling and C2 Emission tomography have been developed, tested and used on a boiler. A description of the equipment specification has been done to allow the installation of the experimental techniques at the SMEs.

Gas sampling cartography has been developed and measurements done in the same boiler. Data acquisition and data processing codes have been demonstrated. It has been built in such a friendly way, that non specialized technicians can use it. Comparison between the results of the data delivered by the optical method and the gas sampling, shows that these methods are complementary and give interesting results for the conception of new burners.

Design, development and testing of prototypes:
Some new designed boilers were constructed and tested. The conception is fully integrated, the injection of the fuel, air and the design of combustion chamber are all taken into account. This procedure allows to optimize all the parameters in one step. The mixing of the fuel and air is optimized, within a combustion chamber geometry, so that the pollutant formation is reduced. For the same purpose the heat transfer between the combusting flow and the walls of the boiler have been optimized. Promising results were achieved.

Thema/Themen

Data not available

Aufforderung zur Vorschlagseinreichung

Data not available

Koordinator

CTD Technologie
EU-Beitrag
Keine Daten
Adresse
20 avenue de l'Epinette
77100 Meaux
Frankreich

Auf der Karte ansehen

Gesamtkosten
Keine Daten

Beteiligte (1)