In the case of swirl-stabilized premix burners (1), an axial mass flow distribution of the fuel introduced which has especially favorable values with respect to characteristics such as NO x emission and maximum amplitudes of pulsations occurring is used. For this purpose, Pareto solutions are deter
In the case of swirl-stabilized premix burners (1), an axial mass flow distribution of the fuel introduced which has especially favorable values with respect to characteristics such as NO x emission and maximum amplitudes of pulsations occurring is used. For this purpose, Pareto solutions are determined with respect to the said characteristics, in that a distributing device (5) with control valves is represented by a tree structure with distributing parameters, and values for the distributing parameters on the basis of which the distributing device (5) is set by means of a control unit (10) are iteratively generated in a data-processing system (9) by an evolutionary algorithm. On the basis of the values determined by a measuring unit (11), solutions which are especially favorable with respect to the characteristics mentioned, espectially Pareto-optimal, are selected. The distributing devices or the premix burners of the burner system are then formed in a way corresponding to such a solution.
대표청구항▼
The invention claimed is: 1. A method for producing a burner system having a fuel source, at least one swirl-stabilized premix burner having a plurality of inlet openings, and a distributing device by which the plurality of inlet openings in the premix burner are connected to the fuel source, the m
The invention claimed is: 1. A method for producing a burner system having a fuel source, at least one swirl-stabilized premix burner having a plurality of inlet openings, and a distributing device by which the plurality of inlet openings in the premix burner are connected to the fuel source, the method comprising: determining a desired mass flow distribution into the at least one premix burner; generating determination variables fixing the mass flow distribution, comprising vectors from a determination set which is a subset of an n-dimensional domain, one after the other with a data-processing system; setting a mass flow distribution in a test setup with at least one premix burner and at least one adjustable distributing device, the mass flow distribution being set based on each determination variable, and measuring a target variable, comprising a vector from a target set which is a subset of an m-dimensional domain, on the test setup; and selecting a determination variable on the basis of the target variables; wherein the at least one premix burner or the at least one distributing device of the burner system is configured such that the mass flow distribution corresponds to that which is fixed by the selected determination variable. 2. The method as claimed in claim 1, further comprising: forming the components of the determination variables at least partly by the distributing parameters of the branching points of a tree structure, by which tree structure the distribution of the mass flow between inlet openings or groups of inlet openings of the at least one premix burner is determined. 3. The method as claimed in claim 1, further comprising: determining Pareto solutions, wherein for every solution in which one component of the target variable has a more favorable value, at least one other component has a less favorable value, at least approximately with the data-processing system; and selecting a determination variable from among the Pareto solutions. 4. The method as claimed in claim 3, wherein determining Pareto solutions comprises determining starting variables serving as a set of determination variables; and further comprising: carrying out iteration steps with the data processing system until a terminating criterion is satisfied including determining a new set of determination variables from a set of determination variables by generating from the set of determination variables a set of test variables respectively lying in the determination set, from which set of test variables the new set of determination variables is selected in each case on the basis of the target variables which were measured for the mass flow distribution fixed by the determination variables. 5. The method as claimed in claim 4, wherein generation of the test variables from the set of determination variables comprises random mutation or recombination of the determination variables using the data-processing system. 6. The method as claimed in claim 1, wherein the concentration of at least one pollutant forms a component of the target variable. 7. The method as claimed in claim 1, wherein a measure of the pulsations occurring in the burner system forms a component of the target variable. 8. The method as claimed in claim 1, wherein the inlet openings are provided at least partly axially in succession. 9. The method as claimed in claim 1, further comprising: dimensioning the inlet openings at least partially to achieve the desired mass flow distribution. 10. The method as claimed in claim 1, wherein the distributing device comprises restrictors, diverters, or both, to achieve the desired mass flow distribution. 11. The method as claimed in claim 6, wherein the at least one pollutant comprises NOx concentration in an exhaust gas. 12. The method as claimed in claim 7, wherein the measure of the pulsations comprises pulsation maximum amplitude. 13. The method as claimed in claim 4, wherein selection of the new set of determination variables from the set of test variables involves determining a plurality of coordinates of the target set, and for each of them dividing the hyperplane characterized by the coordinate equaling zero into subsets, selecting, in the inverse image of each subset under orthogonal projection parallel to the said coordinate, according to the value of its component which corresponds to the said coordinate, at least one target variable which was measured for the mass flow distribution fixed by a test variable, and adding the at least one test variable to the new set of determination variables.
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이 특허에 인용된 특허 (6)
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