Journal of Energy Engineering: Recent submissions
Now showing items 401-420 of 1539
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Research of NOx Reduction on a Low-Speed Two-Stroke Marine Heavy-Fuel Oil Engine
(ASCE, 2/1/2021)Many methods have been developed to reduce emissions from marine heavy-fuel oil (HFO) engines. The effects of exhaust gas recirculation (EGR), Miller cycle, humid air motor (HAM), and start of injection (SOI) were investigated ... -
Coordinated Optimization of Parameters of PSS and UPFC-PODCs to Improve Small-Signal Stability of a Power System with Renewable Energy Generation
(ASCE, 4/1/2021)The ever-increasing penetration of intermittent renewable energy generation from wind farms (WFs) and photovoltaic (PV) plants has significant impacts on the stability of the power system concerned. This paper examined the ... -
Effects of Ethanol, n-Butanol, and n-Pentanol Addition to Diesel Fuel on Combustion and Emission Characteristics in a Common-Rail Diesel Engine with Exhaust-Gas Recirculation
(ASCE, 2/1/2021)The study aims to evaluate the combined effects of alcohols as additives to diesel and exhaust-gas recirculation (EGR) on combustion and emission characteristics of a common-rail diesel engine. Tested fuels were prepared ... -
Influence of Wave Parallel Flow Field Design on the Performance of PEMFC
(ASCE, 2/1/2021)Flow field plays an important role in proton exchange membrane fuel cell (PEMFC) performance. Excellent flow field configuration promotes the transport of reactant gases in the membrane electrode assembly (MEA), effectively ... -
Effects of Exhaust Gas Recirculation under Fueling Rate or Air/Fuel Ratio–Controlled Strategies on Diesel Engine Performance and Emissions by Two-Zone Combustion Modeling
(ASCE, 2/1/2021)The effects of exhaust gas recirculation (EGR) on combustion, performance, and exhaust emissions in direct injection (DI) diesel engines are assessed in a primarily numerical study under the influence of various EGR rates ... -
Energy Trading and Management Strategies in a Regional Integrated Energy System with Multiple Energy Carriers and Renewable-Energy Generation
(ASCE, 2/1/2021)With the development of energy markets and the introduction of renewable energy certificates (RECs), a regional integrated energy system (RIES) may participate in an energy wholesale market flexibly. In this paper, a bilevel ... -
Online Load-Scheduling Strategy and Sizing Optimization for a Stand-Alone Hybrid System
(ASCE, 2/1/2021)Economic cost for sizing and feasibility for scheduling are the tasks to be addressed to design a renewable energy system. Thus, in this paper, the design of a standalone hybrid renewable energy system was a task in which ... -
Numerical Simulation of a Lab-Scale Molten-Salt External Solar Receiver and Its Experimental Validation
(ASCE, 2/1/2021)In this work, a lab-scale external receiver with a xenon lamp set was designed to study optical and thermodynamic properties, and its benchmark was also introduced. Eighteen stainless-steel tubes were placed on the receiver ... -
Thermal Characteristics of Stagger-Arranged Battery Pack with Holding Plates Cooled by Longitudinal Airflow
(ASCE, 2/1/2021)The charging/discharging characteristics and life cycle of a lithium-ion battery are significantly dependent on the battery thermal performance. In this study, the three-dimensional numerical model was developed to explore ... -
Numerical Investigation of the Aerodynamic Droplet Breakup at Mach Numbers Greater Than 1
(ASCE, 2/1/2021)The present work examines numerically the breakup of water droplets exposed to gas flows at Mach numbers Ma>1, which resemble the ambient conditions encountered in the injection systems of supersonic combustion ramjet ... -
Effects of Combustion Parameters on Emissions of Diesel, Diesel/n-Butanol, and Diesel/n-Butanol/2-Ethylhexyl Nitrate Fuels at Different Intake-Oxygen Concentrations in a Diesel Engine
(ASCE, 2/1/2021)This paper tested one cylinder of a modified light-duty 4-cylinder diesel engine to study the coupling effect of 1.8-bar pressure and oxygen concentration (Coxy) on the combustion process of diesel (B00), diesel/n-butanol ... -
Effects of Gasoline Octane Number on Fuel Consumption and Emissions in Two Vehicles Equipped with GDI and PFI Spark-Ignition Engine
(ASCE, 12/1/2020 )The fuel octane number affects the fuel consumption and emission characteristics of vehicles powered by spark-ignition engines. An investigation on the effects of commercial types of gasoline with different research octane ... -
Experimental Investigation of the Phenomenology of AC-Driven Ethanol Electrosprays
(ASCE, 12/1/2020 )Ethanol alternating current (AC)-manipulated electrosprays were investigated for a frequency range of 0.1–10 kHz; applied RMS voltages 3, 4, 5, and 6 kV RMS; and flowrates 5, 10, 15, 20, and 25 mL/h with the purpose ... -
Screening Study of the Effects of Impurity Gases on Hydrogen Storage in Metal-Organic Frameworks
(ASCE, 12/1/2020 )Metal-organic frameworks (MOFs) are perhaps one of the promising candidates for H2 storage in a fuel cell vehicle. However, impurity gases, such as H2O, CO2, CH4, O2, and N2 existing in the process of H2 production, have ... -
Experimental Investigations on Cell Performance of Proton Exchange Membrane Fuel Cells with Orientated-Type Flow Channels
(ASCE, 12/1/2020 )A better-designed flow channel can enhance the mass transfer and improve the performance of a proton exchange membrane fuel cell. An orientated-type flow channel can achieve guidance on reactant and product transfers, ... -
Cogasification of Coal and Biomass in an Integrated Gasification Combined Cycle Power Plant: Effects on Thermodynamic Performance and Gas Composition
(ASCE, 12/1/2020 )Taking inspiration from one of the most significant experiences of coal and biomass cogasification, such as that undertaken in the Willem-Alexander Centrale (WAC) power plant located in Buggenum, Netherlands, a modeling ... -
Dynamics Analysis of a Jet-Fuel Surrogate and Development of a Skeletal Mechanism for Computational Fluid Dynamic Applications
(ASCE, 12/1/2020 )The autoignition dynamics of a three-component surrogate jet fuel (66.2% n-dodecane, 15.8% n-proplylbenzene, 18.0% 1,3,5-trimethylcyclohexane) suitable for usage as Jet A-1 and RP-3 aviation fuels are analyzed, using the ... -
Effects of Lignite Predrying Degree on the Combustion and NO Generation in a 600-MW Lignite-Fired Boiler
(ASCE, 12/1/2020 )Previous studies have shown that predrying can improve lignite combustion performance and lignite-fired boiler efficiency. This paper numerically investigated the effect of the lignite predrying degree on the combustion ... -
Cavitation Characteristics and Hydrodynamic Radial Forces of a Reversible Pump–Turbine at Pump Mode
(ASCE, 12/1/2020 )As the most critical part of a hydropower station, reversible pump–turbines (RPTs) are facing the trend of high parameterization (e.g., high head and high rotation speed) with the rapid development of hydropower, which ... -
Direct Conversion of Methane to Methanol over Copper-Exchanged Zeolite under Mild Conditions
(ASCE, 12/1/2020 )Direct methane-to-methanol (MTM) conversion in a stepwise process under mild conditions has been widely studied. Nevertheless, suitable catalysts and reaction processes for industrial applications have remained elusive. ...