Structural design and performance experiment of a single vortex combustor with single-cavity and air blast atomisers

Zhang, Rongchun; Fan, Weijun; Shi, Qiang; Wenlong, Tan

doi:10.1016/j.ast.2014.08.017

Cited by 30 publications

(2 citation statements)

References 17 publications

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“…The values (CO), (fuel), and (NOX) are calculated on the base of 15% percent oxygen. The combustion efficiency is calculated by determining the heat loss at the combustor outlet via the incomplete combustion products [67].…”

Section: Post-processing Methodmentioning

confidence: 99%

Design, manufacture and test of a micro-turbine renewable energy combustor

Bazooyar

Darabkhani

2020

Energy Conversion and Management

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The ever-increasing demand on highly efficient decentralized power generation with low CO2 emission has made microturbines for power generation in micro-combined heat and power (mCHP) generation systems popular when running on biofuels as a renewable source of energy. This document presents a state-of-the-art design, and optimization (in terms of design, performance and emission control) of a micro-turbine renewable energy combustor that fits into the existing Bladon 12kWe recuperated microturbine plenum while running on a range of biofuels as it can successfully provide the required power of the mCHP. Governing equations for in-depth analysis of the combustor consist of manufacturer empirical data to simulate system-level operation with respect to replacement of the fossil with biofuels. The Model developed and validated at company's ISO conditions confirms the output power of the new combustor fits the conventional system with slight eco-energy improvements. The modeling of the combustor in a complete microturbine assembly system is performed, then was utilized to further analysis of the microturbine with the designed combustor. The experimental results gave on average 46.7% electrical efficiency, 83.2% system efficiency, 12 kWe electrical power, and 90% recuperator effectiveness at nominal operating conditions of microturbine (MT). Sensitivity analyses evaluate changes in performance with respect to fuel phase (e.g., liquid or gaseous) and design variables (e.g., orientation, shape, and dimensions of combustor), leading to energy optimization of the unit.Experimental findings demonstrate that the combustor in microturbine can meet the target performance specifications of a company conventional diesel microturbine with significant savings. An objective function including both combustor and recuperator technical energy data is defined for finding the best ratio of fuel and air and their flow rates to find the most effective operating points for the operation of MT. Annual time series simulations completed for Coventry, West Midlands, United Kingdom indicate a new combustor can reduce operational costs of diesel 3 fuel combustor by 8%, 2%, 36%, and 25% when supplying bioethanol, DME, biogas, and NG, respectively. Annual operating time of the renewable microturbine combustor at rated capacity included an 11% reduction in exergy loss with biogas fuel relative to diesel fuel.

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Section: Post-processing Methodmentioning

confidence: 99%

Design, manufacture and test of a micro-turbine renewable energy combustor

Bazooyar

Darabkhani

2020

Energy Conversion and Management

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“…A new method using a plasma jet igniter was developed and applied in the integrated afterburner by Fei et al [13] to reduce ignition delay time and achieve stable combustion. In addition, adopting new stabilization structures, such as the cavity flameholder instead of the traditional bluff-body flameholder, has also become one of the research directions concerning the integrated afterburner in recent years [14][15][16]. The cavity flameholder is based on the mechanism of the trapped vortex and is more appropriate for high-speed conditions [17].…”

Section: Introductionmentioning

confidence: 99%

Effects of Bypass Flow Distribution on Cold Flow Characteristics of Integrated Afterburner

et al. 2021

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Integrated design is a trend in the development of afterburners, and the distribution of cold flow is directly related to their flow field characteristics, combustion organization, and the cooling effect of components. Numerical simulations were performed to illustrate the effects of bypass flow distribution on the flow distribution, mixing characteristics, and cooling efficiency of the components by varying the cooling flow path structure parameters. Within the range of parameters in this study, it can be indicated that with the increase of heat shield inlet height and afterburner annulus height, the total pressure recovery coefficient along the path increased accordingly, and the increasing rate at the afterburner outlet is 1.12% and 1.19%, respectively. The average cooling efficiency of radial flameholder, circumferential flameholder, and fuel injector all decrease, but the rate of decrease varies slightly depending on the location of the components. The increase of heat shield inlet height would reduce thermal mixing efficiency by approximately 5.4% at the afterburner outlet, and the increase of afterburner annular height would increase about 2.9%.

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Effect on Fuel Supply Angle on Outlet Temperature Distribution and NOx Emission in a Micro Trapped Vortex Combustor

Xiong,

Jiang,

et al. 2024

Environmental Science and Engineering

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Structural design and performance experiment of a single vortex combustor with single-cavity and air blast atomisers

Cited by 30 publications

References 17 publications

Design, manufacture and test of a micro-turbine renewable energy combustor

Design, manufacture and test of a micro-turbine renewable energy combustor

Effects of Bypass Flow Distribution on Cold Flow Characteristics of Integrated Afterburner

Effect on Fuel Supply Angle on Outlet Temperature Distribution and NOx Emission in a Micro Trapped Vortex Combustor

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