Journal of Energy Engineering: Recent submissions
Now showing items 521-540 of 1539
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Effect of CO2 and H2O Gasifications on the Burning Behavior and NO Release Process of Pulverized Coal at Low Oxygen Concentrations during Oxy-Fuel Combustion
(American Society of Civil Engineers, 2019)Through the use of a thermogravimetric analyzer and a fixed-bed reactor, the effects of CO2 and H2O gasifications on oxy combustion and NO emission of pulverized coal at low oxygen concentrations were investigated by ... -
Experimental Study on Unregulated Emissions Characteristics of Alcohol-Diesel Dual-Fuel Combustion with Diesel Oxidation Catalyst
(American Society of Civil Engineers, 2019)An experimental study has been conducted to investigate the effects of alcohol properties on dual-fuel (DF) combustion and unregulated emissions such as NO2, HCHO, and CH3CHO on a multicylinder turbocharged, intercooled, ... -
Finite-Element Implementation of Piezoelectric Energy Harvesting System from Vibrations of Railway Bridge
(American Society of Civil Engineers, 2019)This work investigates the finite-element implementation of a piezoelectric energy harvester subjected to traffic-induced vibration of a railway bridge. To derive the electromechanical coupled framework, Hamilton’s variational ... -
Effects of OFA Ratio on Coal Combustion and NOx Generation of a 600-MW Downfired Boiler after Changing Air Distribution around Fuel-Rich Flow
(American Society of Civil Engineers, 2019)Both experimentation and numerical simulations were conducted to study the effects of the overfire air (OFA) ratio on the coal combustion and NOx generation characteristics of a 600-MW downfired boiler after changing the ... -
Thermal Management of a Cylindrical Lithium-Ion Battery Module Using a Multichannel Wavy Tube
(American Society of Civil Engineers, 2019)Thermal management is essential for the lithium-ion batteries of electric vehicles to maintain a suitable temperature range and reduce local temperature differences. In this study, a multichannel wavy tube is proposed for ... -
Thermal Simulation and Economic Study of Predried Lignite Production Retrofit of a Greek Power Plant for Enhanced Flexibility
(American Society of Civil Engineers, 2019)The use of predried lignite as a factor to enhance flexibility of existing power plants is considered as a practically feasible step to ensure power supply and grid stability. In this work, the retrofit of a Greek ... -
Renewable Energy Utilization and Energy Conservation in Thermal and Power Systems for China’s Sustainable Energy Future
(American Society of Civil Engineers, 2019) -
H2/Air Autoignition Dynamics around the Third Explosion Limit
(American Society of Civil Engineers, 2019)This paper examines the influence of wall reactions on the generation of the explosive time scale that characterizes ignition delay around the third explosion limit of a stoichiometric H2/air homogeneous mixture. The only ... -
Simulation of Mode-Switching Methods’ Effect on Mass Transfer in a Unitized Regenerative Fuel Cell
(American Society of Civil Engineers, 2019)Unitized regenerative fuel cells are unique devices that combine the functions of fuel cells and water electrolysis in one system. The internal mass-transport mechanisms present in a unitized regenerative fuel cell are ... -
Fuzzy Equivalence Relation Clustering-Based Algorithm for Coherency Identification among Generators
(American Society of Civil Engineers, 2019)Coherency identification among generators plays an important role in controlled islanding and wide-area monitoring of a power system with renewable energy sources. So far, wide-area measurement systems (WAMS) have been ... -
Bioalcohol Electrosprays for Practical Propulsion Systems
(American Society of Civil Engineers, 2019)Electrosprays of ethanol, 1-propanol and 1-butanol were studied experimentally at flow rates ranging from 5 to 25 mL/h, and voltages ranging from 3 to 6 kV, spraying along and against the direction of gravity. To ... -
Predicting the Heat Release Rate of Ion Current Combustion Process Fuelled with Hydrogen/Carbon Dioxide and Natural Gas
(American Society of Civil Engineers, 2019)The effects of initial pressure, equivalence ratio, hydrogen fraction, and CO2 dilution ratio on the characteristics of ion currents and heat release rate (HRR) were comparatively investigated with natural gas as a fuel. ... -
Thermodynamic Comparison of Gas Turbine and ORC Combined Cycle with Pure and Mixture Working Fluids
(American Society of Civil Engineers, 2019)This paper proposed a gas turbine and organic Rankine cycle (GT-ORC) combined cycle to further improve the energy efficiency of gas turbines. Alkanes, linear siloxanes, and aromatics were selected as working fluids for the ... -
Mixing and Combustion Performance of a Stratified Bluff Body Primary Zone Interacting with a Coannular Swirl–Induced Recirculation
(American Society of Civil Engineers, 2018)The interaction of an axisymmetric, bluff body-stabilized, primary zone, operated under stratified inlet mixture conditions, with a coannular, secondary swirling stream and an external, surrounding air coflow was investigated. ... -
Design and Experimental Study of a 5-kW Organic Rankine Cycle with Axial-Flow Turbine for Low-Temperature Heat Recovery
(American Society of Civil Engineers, 2018)The microscale organic Rankine cycle (ORC) system is considered a promising technology to recover thermal energy from widely distributed low-temperature heat sources. By using HFC-R225fa as working fluid, a 5-kW low-temperature ... -
Effect of In-Cylinder Conditions on Spray Characteristics of Diesel, Biodiesel, and Biodiesel-Ethanol Blended Fuels
(American Society of Civil Engineers, 2018)The analysis result of liquid fuel combustion performance shows that the factors affecting chamber combustion are the vaporization and atomization of liquid fuel. At the same time, the combustion chamber conditions and the ... -
Combustion and Emission Characteristics of Diesel Engines Using Diesel, DMF/Diesel, and N-Pentanol/Diesel Fuel Blends
(American Society of Civil Engineers, 2018)In recent years, researchers around the world have focused on biofuels such as 2,5-dimethylfuran (DMF) and n-pentanol because of their potential for reducing harmful emissions. Studies show that oxygenated biofuels can ... -
Comparative Performance Assessment of a U-Shaped Recuperative Radiant Tube under Conventional and MILD Combustion Modes
(American Society of Civil Engineers, 2018)Moderate and intense low-oxygen dilution (MILD) combustion, characterized by low reaction rate, uniform heat flux, and significantly reduced pollutants, is a promising technology which is widely used in various industries. ... -
Impact of Intake Charge Preheating on a Biogas Run Dual Fuel Diesel Engine Using Ternary Blends of Diesel-Biodiesel-Ethanol
(American Society of Civil Engineers, 2018)In the pursuit of minimizing a considerable amount of imported fossil diesel and greenhouse gas (GHG) emissions, green fuels like biodiesel, ethanol, and biogas can be used efficiently under dual fuel mode (DFM) of a diesel ... -
Wind-Thermal Generating Unit Commitment Considering Short-Term Fluctuation of Wind Power
(American Society of Civil Engineers, 2018)The integration of large-scale wind power in a power grid brings tremendous challenges to the power system operation because of the variability of wind power. Adequate spinning reserve is always required for effective ...