4.7 Article

Exergy analysis and NOx emission of the H2-fueled micro burner with slinky projection shape channel for micro-thermophotovoltaic system

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Energy & Fuels

Exergy analysis and energy output improvement of the micro-thermophotovoltaic system via investigating the fractal angles of secondary Y-shaped fins in the micro combustor

Zongguo Xue et al.

Summary: This study aims to improve the energy output of micro thermophotovoltaic systems by further exploring the thermal performance of the embedded bionic Y-shaped fins (BYF) micro combustor. The results show that the novel design with different fractal angles outperforms the traditional design in terms of thermal performance and energy efficiency, but the temperature uniformity decreases with increasing fractal angle.
Article Energy & Fuels

Study on combustion characteristic of premixed H2/C3H8/air and working performance in the micro combustor with block

Qingguo Peng et al.

Summary: The combustion characteristics and thermal performance of premixed H-2/C3H8/air in a micro planar combustor with a block insert were experimentally and numerically tested. The effects of hydrogen blended fraction, equivalence ratio, flow rate, and block width on flame stability and heat transfer were discussed and analyzed. The results showed that adding hydrogen improved combustion stability in the micro combustor, and the lowest hydrogen blending mole fraction for a steady flame of the premixed H-2/C3H8/air was obtained through experimental study.
Article Energy & Fuels

Comprehensive numerical insight the thermal performance improvement of the micro combustors with internal bionic Y-shaped fins for micro-thermal voltaic system applications

Zongguo Xue et al.

Summary: An innovative micro-combustion chamber with internal Y-shaped fins is introduced to enhance the comprehensive thermal performance of the micro thermal voltaic system (MTPV). The results show that the micro-combustion chamber with internal Y-shaped fins exhibits excellent thermal performance. However, an increase in the number of fins leads to a decrease in temperature uniformity and an increase in pressure drop.
Article Green & Sustainable Science & Technology

Parametric study of inserting internal spiral fins on the micro combustor performance for thermophotovoltaic systems

Ziqiang He et al.

Summary: With the rapid development of MEMS devices, there is a growing interest in power systems based on micro scale combustion. This study investigates the thermal performance and flame characteristics of micro combustion using three-dimensional models and detailed reaction mechanisms. The findings highlight the significant impact of spiral fins on the energy output of micro thermophotovoltaic systems.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2022)

Article Energy & Fuels

Flame stability and emissions characteristics of liquid ammonia spray co-fired with methane in a single stage swirl combustor

Ekenechukwu C. Okafor et al.

Summary: This study successfully conducted liquid ammonia spray combustion under preheated air conditions, demonstrating that preheated air can enhance the dispersion and evaporation of the liquid droplets, thereby reducing spray height and achieving stable combustion of liquid ammonia spray alone.
Article Thermodynamics

Effects of micro-combustor geometry and size on the heat transfer and combustion characteristics of premixed hydrogen/air flames

Alireza Rahbari et al.

Summary: The major challenge in the development of micro-combustors is flame instabilities, which lead to non-uniform wall temperature distribution and lower combustion efficiency. This research investigates the combustion characteristics and geometrical configurations on flame stability and combustion efficiency, with a detailed chemical reaction mechanism developed and parametric study conducted. Increasing thermal conductivity coefficient, equivalence ratio, and using a micro-combustor with bluff body are identified as effective ways to improve combustion performance.

ENERGY (2021)

Article Thermodynamics

Ultra-rich fuel dynamics of a holder-stabilized premixed flame in a preheated mesoscale combustor

Jianlong Wan et al.

Summary: This study experimentally investigates the dynamics of laminar premixed flames at fuel ultra-rich condition, revealing normal, anomalous, and low speed blow-off phenomena, as well as the oscillation and stability limit behavior of the flames with the change in Reynolds number.

ENERGY (2021)

Article Thermodynamics

Non-premixed combustion characteristics and thermal performance of a catalytic combustor for micro-thermophotovoltaic systems

Linhong Li et al.

Summary: The study verified that a symmetrical configuration of micro-combustor can improve combustion efficiency and radiation efficiency, allowing it to operate at higher average velocities. Furthermore, as the average velocity increases, combustion efficiency decreases monotonically while radiation efficiency and radiant energy output increase first and then decrease.

ENERGY (2021)

Article Chemistry, Physical

Numerical investigation on a multi-channel micro combustor fueled with hydrogen for a micro-thermophotovoltaic system

Ziqiang He et al.

Summary: This study compared the heat transfer performance and energy output of different channel shapes MCMC and CMC in the MTPV system, finding that the MCMC with diamond channels had a higher outer wall temperature at a certain flow rate. Additionally, the double-layer MCMC with counterflow structure achieved the highest total energy conversion efficiency under specific conditions.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Article Chemistry, Physical

Thermal performance improvement of premixed hydrogen/air fueled cylindrical micro-combustor using a preheater-conductor plate

Shiguang Wu et al.

Summary: A novel preheater-conductor plate was designed to be inserted into a cylindrical micro-combustor to improve the outer wall temperature and the exergy efficiency. The study investigated the impact of different factors on the thermal performance of the micro-combustor, finding that the proposed preheater-conductor plate significantly improved the system's performance.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Article Energy & Fuels

Heat transfer and entropy production evaluation on premixed hydrogen/air-fuelled micro-combustors with internal threads

Siliang Ni et al.

Summary: The proposed micro-combustor with tailored internal threads aims to improve the wall temperature uniformity and enhance the second law efficiency of a micro thermophotovoltaic (MTPV) system. Computational fluid dynamics simulations show that the corrugated thread structures can reduce flame temperature and improve heat transfer significantly. The study also reveals the impact of inlet velocity and nominal diameter on thermal performances of the system.
Article Energy & Fuels

Catalytically stabilized combustion characteristics of methane-air mixtures in micro-scale heat-recirculating systems

Junjie Chen et al.

Summary: The study focused on investigating catalytically stabilized combustion of a methane-air mixture in a micro-scale heat-recirculating system to understand flame stabilization mechanisms and system design insights. The research identified factors for improved flame stability and combustion characteristics, highlighting the importance of catalytic action and heat-recirculating structure.
Article Thermodynamics

Thermal management and temperature uniformity enhancement of electronic devices by micro heat sinks: A review

Ziqiang He et al.

Summary: Micro heat sinks are crucial for addressing the challenges of high heat flux and non-uniform temperature distribution in electronic devices. Developments in thermal enhancement technologies and reducing non-uniform temperature distribution are essential. An effective adaptive cooling method is urgently needed to improve the efficiency and lifespan of electronic components.

ENERGY (2021)

Review Energy & Fuels

Recent progress in flame stabilization technologies for combustion-based micro energy and power systems

Jianlong Wan et al.

Summary: This article discusses the development and classification of flame stabilization technologies in micro-combustors, including single flame stabilization technologies, combined flame stabilization technologies, and other technologies. Progress made in the past decade is summarized, along with a discussion on the underlying mechanisms of these flame anchoring strategies.
Article Energy & Fuels

Effects of intake swirl on the fuel/air mixing and combustion performance in a lateral swirl combustion system for direct injection diesel engines

Yanlin Chen et al.

Summary: Research shows that the circumferential injection angle (CIA) and swirl ratio (SR) in the lateral swirl combustion system (LSCS) can have an impact on combustion performance, with LSCS without intake swirl achieving better fuel/air mixing and combustion performance in DI diesel engines.
Article Chemistry, Physical

Enhance the energy and exergy performance of hydrogen combustion by improving the micro-combustor outlet in thermofluidic systems

Salar Mohseni et al.

Summary: This study focuses on improving the exit part of conventional micro-combustors to increase heat transfer efficiency and decrease exhaust gas temperature. By enhancing exhaust gas velocity and increasing heat transfer surface area, the new micro-combustors show reduced exhaust gas temperature and increased wall temperature uniformity. Furthermore, micro combustors with porous media demonstrate the best energy and exergy performance.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Article Chemistry, Physical

Numerical study on the influence of controllable flow ratio on combustion characteristics of a controllable central slotted bluff body and cavity combined micro combustor

Fulei Xu et al.

Summary: The CC micro combustor with a controllable flow rate of 0.4 exhibits the highest combustion efficiency and better combustion stability under high inlet volume flow rates in micro combustion systems.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Article Thermodynamics

Heat transfer enhancement and exergy efficiency improvement of a micro combustor with internal spiral fins for thermophotovoltaic systems

Ziqiang He et al.

Summary: By introducing internal spiral fins, the novel micro combustor can effectively improve the energy efficiency and output of micro thermophotovoltaic system, although with increased pressure loss. Experiment results demonstrate that the micro combustor with 8 spiral fins achieves the highest efficiency and energy output at different inlet velocities.

APPLIED THERMAL ENGINEERING (2021)

Article Thermodynamics

Numerical investigations on hydrogen-fueled micro-cylindrical combustors with cavity for micro-thermophotovoltaic applications

Wei Zuo et al.

Summary: The study found that the micro-cylindrical combustor with cavity has better thermal performance compared to the one without cavity. By analyzing the effects of cavity length and depth, the optimal cavity size was determined, and it was concluded that the combustor with cavity has better potential for applications in micro-TPV systems.

ENERGY (2021)

Article Chemistry, Physical

Comparative investigation of combustion and thermal characteristics of a conventional micro combustor and micro combustor with internal straight/spiral fins for thermophotovoltaic system

Ziqiang He et al.

Summary: The study focuses on the impact of hydrogen mass flow rate, equivalence ratio, and materials on the thermal performance of micro-thermophotovoltaic (MTPV) system, providing suggestions for improving energy output.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Article Green & Sustainable Science & Technology

Effects of porosity and multilayers of porous medium on the hydrogen-fueled combustion and micro-thermophotovoltaic

Qingguo Peng et al.

Summary: The study found that a small porosity of porous medium can improve flame stability and heat transfer, but has adverse effects on component flow and flame propagation. The use of multi-PM-layers helps balance the opposing effects on fluidity and thermal performance, leading to higher combustion efficiency and radiation temperature.

RENEWABLE ENERGY (2021)

Article Chemistry, Physical

Numerical investigation of a novel micro combustor with a central and bilateral slotted blunt body

Ziqiang He et al.

Summary: The newly designed MCSB, with a central and bilateral slotted blunt body, shows significant improvement in combustion performance by effectively preventing flame tip opening and exhibiting higher combustion efficiency and blown-off limit. The blown-off limit of MCSB can reach up to 756 cm(3)/s at a flow rate ratio of 0.2 and a bluff body angle of 90 degrees, which is 61.5% higher than that of conventional combustors.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Article Engineering, Chemical

A novel combined baffle-cavity micro-combustor configuration for Micro-Thermo-Photo-Voltaic applications

E. Amani et al.

CHINESE JOURNAL OF CHEMICAL ENGINEERING (2020)

Article Engineering, Chemical

Numerical analysis of heat recuperation in micro-combustors using internal recirculation

Eliton Fontana et al.

CHEMICAL ENGINEERING SCIENCE (2020)

Article Chemistry, Physical

Numerical investigation on the performance of bluff body augmented micro cavity-combustor

Zheng Zhang et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

Article Chemistry, Physical

Combustion characteristics and thermal enhancement of premixed hydrogen/air in micro combustor with pin fin arrays

Ziqiang He et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

Article Chemistry, Physical

Effects of rectangular rib on exergy efficiency of a hydrogen-fueled micro combustor

Qingqing Li et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

Article Thermodynamics

Experimental study and optimization of a combustion-based micro thermoelectric generator

Wei Wang et al.

APPLIED THERMAL ENGINEERING (2020)

Article Green & Sustainable Science & Technology

The numerical study of the energy and exergy efficiencies of the micro-combustor by the internal micro-fin for thermophotovoltaic systems

Ebrahim Nadimi et al.

JOURNAL OF CLEANER PRODUCTION (2019)

Article Thermodynamics

Impacts of Dilution on Hydrogen Combustion Characteristics and NOx Emissions

P. R. Resende et al.

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME (2019)

Article Chemistry, Physical

A numerical study on combustion and emission characteristics of premixed hydrogen air flames

Omer Cam et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2017)

Article Thermodynamics

Flame stability and heat transfer analysis of methane-air mixtures in catalytic micro-combustors

Junjie Chen et al.

APPLIED THERMAL ENGINEERING (2017)

Article Thermodynamics

Effect of external surface emissivity on flame-splitting limit in a micro cavity-combustor

Wei Yang et al.

APPLIED THERMAL ENGINEERING (2015)

Article Thermodynamics

Development of micro-thermophotovoltaic power generator with heat recuperation

W. M. Yang et al.

ENERGY CONVERSION AND MANAGEMENT (2014)

Article Engineering, Electrical & Electronic

Experimental and numerical study of the wall temperature of cylindrical micro combustors

J. Li et al.

JOURNAL OF MICROMECHANICS AND MICROENGINEERING (2009)

Article Chemistry, Physical

A study of NOx formation in hydrogen flames

Martin Skottene et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2007)

Article Thermodynamics

Numerical modeling of non-adiabatic heat-recirculating combustors

C. H. Kuo et al.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2007)

Article Engineering, Electrical & Electronic

Effect of wall thickness of micro-combustor on the performance of micro-thermophotovoltaic power generators

WM Yang et al.

SENSORS AND ACTUATORS A-PHYSICAL (2005)

Article Thermodynamics

Microthermophotovoltaics power system for portable mems devices

H Xue et al.

MICROSCALE THERMOPHYSICAL ENGINEERING (2005)

Article Physics, Applied

Development of a prototype micro-thermophotovoltaic power generator

WM Yang et al.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2004)