Liquid fuel burner with oxygen replenishment for testing scramjet combustors

Combustion and Emission Characteristics of Palm Oil-Based Biodiesel in a Liquid Fuel Burner

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/884/1/012026 ◽

2020 ◽

Vol 884 ◽

pp. 012026

Author(s):

Amirul A Ahmad ◽

Mohammad N M Jaafar ◽

Norazila B Othman ◽

Anis A M Azli ◽

Mazlan Said ◽

...

Keyword(s):

Palm Oil ◽

Liquid Fuel ◽

Emission Characteristics ◽

Fuel Burner

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Numerical Simulation of Inclined Injection of Polydisperse Polykinetic Spray in a Crossflow Using Quadrature Method of Moments

ASME 2014 Gas Turbine India Conference ◽

10.1115/gtindia2014-8209 ◽

2014 ◽

Author(s):

Sudeepta Mondal ◽

Achintya Mukhopadhyay

Keyword(s):

Method Of Moments ◽

Gas Turbines ◽

Carrier Phase ◽

Liquid Fuel ◽

The Other ◽

Quadrature Method ◽

Vertical Injection ◽

Quadrature Method Of Moments ◽

Scramjet Combustors ◽

Vertical Size

Liquid fuel is introduced as spray into a gaseous crossflow in many combustion applications like afterburners in gas turbines, ramjet and scramjet combustors. The transport phenomenon of a polydisperse polykinetic spray injected with an inclination in a crossflow has been analysed using Quadrature Method of Moments. Providing an inclination angle to the spray has been accompanied with a more or less uniform distribution of particles, unlike a distinct segregation of larger and smaller diameter particles as observed in the case of vertical injection. The upstream inclined injection in the crossflow yielded a region of stagnation of particles, irrespective of their sizes. This region corresponds to the location where the spray particles equilibrate with the crossflow, whereby they lose their momentum and are swept away by the carrier phase. The downstream injection, on the other hand, showed distinct horizontal and vertical size-based segregation along with regions of accumulation of particles.

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Emission Reduction From Burner System By Varying Swirler Blade Angle

Jurnal Teknologi ◽

10.11113/jt.v51.151 ◽

2012 ◽

Author(s):

Mohammad Nazri Mohd Jaafar ◽

Muhamad Shukri Abdul Mookmin ◽

Ismail Samat

Keyword(s):

Liquid Fuel ◽

Radial Flow ◽

Swirling Flow ◽

Nox Reduction ◽

Oxides Of Nitrogen ◽

Fuel Injector ◽

Blade Angle ◽

Back Plate ◽

Curved Blade ◽

Fuel Burner

Kertas kerja ini mempersembahkan pengaruh mengubah sudut bilah pemusar udara aliran jejarian yang kecil dalam mengurangkan emisi seperti oksida nitrogen (NOx) dan karbon monoksida (CO). Dalam kajian ini, satu sistem pembakar berbahan api cecair menggunakan empat pemusar udara aliran jejarian yang berlainan sudut bilah diuji di dalam kebuk pembakar berdiameter 163 mm dan panjang 280 mm. Ujian dijalankan menggunakan kerosin sebagai bahan api. Pemusar udara aliran jejarian dengan bilah terlengkung berdiameter keluaran 40 mm dipasang pada satah masukan pembakar bagi menjana aliran berpusar. Bahan api dipancitkan pada plat belakang keluaran pemusar menggunakan pemancit bahan api pusat dengan dua nozel bahan api menghala keluar secara paksi. Sudut pemusar udara dan nisbah setara diubah–ubah. Ujian dilaksanakan menggunakan empat pemusar udara yang berlainan sudut, iaitu masing–masing 30°, 40°, 50° dan 60°. Pengurangan NOx melebihi 50 peratus dicapai untuk sudut bilah 60° berbanding pada sudut bilah 30°. Emisi CO juga dikurangkan sebanyak 72 peratus pada sudut bilah 60° berbanding pada sudut bilah 30°. Kata kunci: Aliran berpusar; pembakar industri; emisi NOx; emisi CO; bilah terlengkung This paper presents the effect of varying the blade angle of a small radial air swirler on reducing emissions such as oxides of nitrogen (NOx) and carbon monoxide (CO). In this research a liquid fuel burner system with four different radial air swirler blade angles has been investigated using 163 mm inside diameter combustor of 280 mm length. Tests were conducted using kerosene as fuel. A radial flow air swirler with curved blades having 40 mm outlet diameter was inserted at the inlet plane of the combustor to produce swirling flow. Fuel was injected at the back plate of the swirler outlet using central fuel injector with two fuel nozzles pointing axially outwards. The swirler blade angles and equivalence ratios were varied. Tests were carried out using four different air swirlers having 30°, 40°, 50° and 60° blade angles, respectively. A NOx reduction of more than 50 percent was achieved for blade angle of 60° compared to the 30° blade angle. CO emissions were also reduced by 72 percent for 60° blade angle compared 30° blade angle. Key words: Swirling flow; industrial burner; NOx emissions; CO emissions; curved blade

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A Design of Experiments Based Investigation of the Influence of Hot Cross-Flow Gas on a FLOX®-Based Single-Nozzle Liquid Burner

10.1115/gt2021-59029 ◽

2021 ◽

Author(s):

Saeed Izadi ◽

Jan Zanger ◽

Oliver Kislat ◽

Benedict Enderle ◽

Felix Grimm ◽

...

Keyword(s):

Natural Gas ◽

Design Of Experiments ◽

Liquid Fuel ◽

Cross Flow ◽

Statistical Design ◽

Test Rig ◽

Geometrical Properties ◽

Hot Gas ◽

Input Variables ◽

Fuel Burner

Abstract Increased global demand for cleaner energy production and growing concern about using fossil fuels have urged many researchers to focus their work on developing more efficient and flexible combustion processes. In this regard, a FLOX®-based liquid fuel single-nozzle burner is investigated for use in a Capstone C30 micro gas turbine (MGT). The main advantages of FLOX®-based combustor systems are their decreased NOx emissions and increased fuel flexibility. An atmospheric test rig is set up to investigate the behavior of the FLOX®-based liquid fuel burner under the influence of the hot gas. The circulating gas in the C30 annular combustion chamber is emulated by hot cross-flow gas generated by a 20-nozzle FLOX®-based natural gas burner operated on a separate horizontal test rig. The variation and combination of the process parameters of both burners are done systematically according to Design of Experiments (DOE) as a statistical design methodology. DOE methodology is adopted rather than the conventional one-factor-at-a-time (OFAT) strategy, as DOE considers any possible interaction between the factors and reduces the number of experiments. Employing statistical design of experiments allows determining which input variables are responsible for the observed changes in the response, developing a model relating the response to the important input variables, and using this model for improving the combustor system. The results are subsequently run through the Analysis of Variance (ANOVA) in order to allow for an objective conclusion about the effect of the factors on the selected responses, which include mass flow rate (·fuel) and global air equivalence ratio (λ) of both of the liquid and natural gas burners. The hot gas cross-flow interaction with the liquid fuel burner is assessed through analyzing exhaust gas emissions and averaged flame OH*-chemiluminescence images. The models developed by the DOE method can be used to estimate the emissions and the flame geometrical properties of any other operating points that are not explicitly tested.

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Experimental Study of the Interactions Between Air Flow Rate Modulations and PVC in a Swirl-Stabilised Liquid Fuel Burner

Volume 4A: Combustion, Fuels and Emissions ◽

10.1115/gt2015-42775 ◽

2015 ◽

Cited By ~ 3

Author(s):

Antoine Renaud ◽

Sébastien Ducruix ◽

Philippe Scouflaire ◽

Laurent Zimmer

Keyword(s):

Flow Rate ◽

Liquid Fuel ◽

Air Flow ◽

Mie Scattering ◽

Dynamic Mode Decomposition ◽

Fuel Spray ◽

Dynamic Mode ◽

Air Flow Rate ◽

Time Resolved ◽

Fuel Burner

In a swirl-stabilised liquid fuel burner, the fuel spray response to the Precessing Vortex Core (PVC) and air flow rate modulations is analysed in non-reacting conditions. A siren-like device is used to modulate the air flow rate at a frequency corresponding to longitudinal combustion instability oscillations observed during reacting tests. Time-resolved Mie scattering images of the fuel spray are recorded and treated with multiple post-processing methods based on Dynamic Mode Decomposition. The spray velocity fluctuations induced by the PVC and the siren-generated modulations are extracted from noisy datasets and studied. The evolution of the PVC impact on the spray for different levels of flow rate fluctuations is followed and a nonlinear interaction mode is highlighted for several intensities of flow rate modulations. It is shown that increasing the flow rate modulations tend to weaken the PVC impact on the spray, progressively disturbing its structure, starting from the downstream part and progressing upstream. These observations on the fuel spray can be used to understand and interpret data obtained in reacting conditions, for example when competition between PVC and longitudinal combustion instabilities occurs.

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Pollutant Formation during the Occurrence of Flame Instabilities under Very-Lean Combustion Conditions in a Liquid-Fuel Burner

Energies ◽

10.3390/en10030352 ◽

2017 ◽

Vol 10 (3) ◽

pp. 352 ◽

Cited By ~ 8

Author(s):

Maria De Giorgi ◽

Stefano Campilongo ◽

Antonio Ficarella ◽

Gianluigi De Falco ◽

Mario Commodo ◽

...

Keyword(s):

Liquid Fuel ◽

Pollutant Formation ◽

Lean Combustion ◽

Flame Instabilities ◽

Fuel Burner

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Image processing for the characterization of flame stability in a non-premixed liquid fuel burner near lean blowout

Aerospace Science and Technology ◽

10.1016/j.ast.2015.11.030 ◽

2016 ◽

Vol 49 ◽

pp. 41-51 ◽

Cited By ~ 26

Author(s):

Maria Grazia De Giorgi ◽

Aldebara Sciolti ◽

Stefano Campilongo ◽

Antonio Ficarella

Keyword(s):

Image Processing ◽

Liquid Fuel ◽

Flame Stability ◽

Lean Blowout ◽

Fuel Burner

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