Micro-modular air driven combustion nozzle: Experimental and numerical modelling studies towards optimal geometric design

Dostiyarov, Abay; Садыкова, С.Б.

doi:10.2298/tsci210410257d

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…Tis is characteristic of any of the many burner designs, especially those which aim to create a vortex or jet ejection enhancing the heat and mass transfer [7]. In contrast to the described devices, burners with premixing [8] allow signifcant reduction of harmful emissions without loss of combustion efciency of gaseous and, in some cases, liquid fuels, provided they are mainly used in combustion chambers of gas turbines. Te most commonly used device of this kind is lean premixed prevaporized burner [9], which has a great potential for carbon monoxide (CO) and nitrogen oxide (NO x ) emissions reduction [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…(1) Efcient mixing of fuel and air is necessary to reduce CO emissions, that is, to increase the thermal efciency of combustion. It is carried out in (a) vortex fow due to the intensity of turbulence [8] (b) cross jets due to collision of fows [19] (c) parallel jets due to the speed or pressure of fuid [31] (2) It is necessary for reducing NOx emissions, (a) reducing the temperature in local areas by mixing with rest of air [9] (b) distributing the fame over the volume of the combustion chamber [18] (c) circulation of fue gas into the chamber space [31] Two diferent designs of burners were created within the scope of this research. Tey work on the basis of diferent methods of fuel-air mixture preparation: (1) vortex mixing and (2) mixing with cross jets.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Analysis of Swirl Burner and Cross Jet Burner in Terms of Efficiency and Environmental Performance

Zhumagulov,

Dolgov,

Baubek

et al. 2023

Journal of Combustion

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The article contains a comparative analysis of two types of burners used in different methods of fuel-air mixture preparation: (1) vortex mixing and (2) mixing with transverse jets. The analysis was carried out in order to determine which one of the two burning devices is more efficient and has better environmental performance. In device no. 1, conditions for the fuel-air mixture formation are created by vortex turbulence. The basic principle lying at the core of this design is a vortex flow inside, which provokes a more intense mixing of fuel and air. Moreover, preliminary physical and thermal treatment of the fuel-air mixture has a positive effect on its environmental performance. In contrast, in device no. 2 based on transverse jets’ active mixture formation is achieved through collision of air and fuel flows at an angle close to 90°. The research was based on an experiment carried out with the use of a laboratory firing stand. Flue gas samples were analyzed in order to compare the main harmful air emission indicators with TESTO 350-XL gas analyzer. A propane-butane mixture of 60% C3H8 (propane) and 40% C4H10 (butane) was used as the main fuel. Some indicators were determined after the experiment: measurement units conversion from “ppm” to “mg/m3,” excess air ratio α and equivalence ratio φ, flue gas concentrations recalculation taking oxygen into account, fuel calorific value, and heat release rate. The analysis results are as follows: (i) the swirl burner shows better performance in terms of nitrogen oxides (NOx) emissions; there is a 1.75-fold difference in total NOx emissions compared to the cross jet burner; (ii) the burner on transverse jets is 10 times more efficient than the swirl burner in terms of carbon monoxide (CO) emissions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Swirl Burner and Cross Jet Burner in Terms of Efficiency and Environmental Performance

Zhumagulov,

Dolgov,

Baubek

et al. 2023

Journal of Combustion

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Experimental study results of the front-end device with two-tier air burner as part of the gas turbine engine combustion chamber

et al. 2023

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In recent years, the gas turbine power plant has been increasingly used in various industries in Kazakhstan. The reasons for this are: thermal efficiency; simplicity of the thermal scheme and design; small mass per power unit; high maneuverability; low toxicity; relatively simple automation of operation. This paper presents the experimental study results of a two-tier air burner as the part of the gas turbine engine combustion chamber at burning liquid fuel. ? new design of a microflame device was developed. Two-tier burner makes possible the combustion process in a number of discrete zones, i.e. microflame combustion. During the experiment, the installation angles of the blades of the external and internal registers, as well as the ratio of the coefficients of excess air in the tiers, were changed. The experimental studies of a two-tier burner confirmed the possibility to increase fuel combustion efficiency, a low degree of temperature field unevenness and to decrease NOx emission.

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Micro-modular air driven combustion nozzle: Experimental and numerical modelling studies towards optimal geometric design

Cited by 2 publications

References 23 publications

Comparative Analysis of Swirl Burner and Cross Jet Burner in Terms of Efficiency and Environmental Performance

Comparative Analysis of Swirl Burner and Cross Jet Burner in Terms of Efficiency and Environmental Performance

Experimental study results of the front-end device with two-tier air burner as part of the gas turbine engine combustion chamber

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