Journal of Energy Engineering: Recent submissions
Now showing items 661-680 of 1539
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Effect of Ethanol–Diesel Fuel Blend on Diesel Engine Emissions Produced by Different Bus Fleets
(American Society of Civil Engineers, 2016)The major regulated pollutants emitted by a diesel urban bus are nitrogen oxides (NOx) and particulate matter (PM). These emissions depend on the engine and its strategies (injection, exhaust-gas recirculation, after-treatment ... -
Effect of Bioethanol on Combustion and Exhaust Emissions in a Diesel–Bioethanol Dual-Fuel Combustion Engine
(American Society of Civil Engineers, 2016)The purpose of this study is to investigate the effect of the bioethanol port injection ratio and the in-cylinder diesel injection timing on combustion and exhaust emissions characteristics using a dual-fuel combustion ... -
Experimental Investigation on the Influence of Simulated EGR Addition on Swirl-Stabilized CH4 Flames
(American Society of Civil Engineers, 2016)Low-temperature combustion concepts for transport and power generation employ mixture dilution techniques, such as exhaust gas recirculation (EGR), that offer the potential of fuel flexibility, reduced pollutant emissions, ... -
Combustion and Emissions in an HSDI Engine Running on Diesel or Vegetable Oil Base Fuel with n-Butanol or Diethyl Ether As a Fuel Extender
(American Society of Civil Engineers, 2016)The present investigation compares the combustion, performance, and exhaust emissions of diesel fuel in blends with either 24% n-butanol or 24% diethyl ether (DEE), and of vegetable (cottonseed) oil in blends with either ... -
Start-Up and Shut-Down Control Strategies for MMC-Based Multi-Terminal HVDC Systems
(American Society of Civil Engineers, 2016)This paper presents start-up and a shut-down control strategies for modular multilevel converter (MMC) based multiterminal high-voltage direct-current (HVDC) systems (MMC-MTDC). An AC system charging method with voltage ... -
Studies on Characteristics and Formation of Soot Nanoparticles in an Ethylene/Air Inverse Diffusion Flame
(American Society of Civil Engineers, 2016)An ethylene/air inverse diffusion flame burner was assumed to generate a stable flame, and soot samples were captured at different locations around the outer edge along the height of the flame. The soot samples were then ... -
Equilibrium Modeling of Combined Heat and Power Deployment
(American Society of Civil Engineers, 2016)Combined heat and power (CHP) generates electricity and heat from the same fuel source and can provide these services at higher equivalent conversion efficiency relative to grid-purchased electricity and stand-alone steam ... -
Performance Prediction of a Transport Gasifier–Based IGCC System with CO2 Capture under Uncertainties
(American Society of Civil Engineers, 2016)In this study, a transport gasifier–based integrated gasification combined cycle (IGCC) with 90% CO2 capture rate was analyzed to predict possible net power output and net efficiency distributions in the system under ... -
MPPT Control by Using a <i>U</i>–<i>P</i> Curve for PMSG–Based Small Wind Turbines
(American Society of Civil Engineers, 2016)The permanent magnet synchronous generator (PMSG)–based small wind turbines (SWT) are studied in recent years because of their high reliability, high efficiency and low cost. To achieve maximum power point tracking (MPPT) ... -
Emission Characteristics of a Natural Gas Engine Operating in Lean-Burn and Stoichiometric Modes
(American Society of Civil Engineers, 2016)To comply with the stringent Euro VI emission standards, two techniques have been proposed for natural gas engines, namely, lean-burn combustion with oxidation catalyst (OC) and stoichiometric combustion with three-way ... -
Combustion Analysis of a Spark-Ignition Engine Fueled on Methane-Hydrogen Blend with Variable Equivalence Ratio Using a Computational Fluid Dynamics Code
(American Society of Civil Engineers, 2016)The main scope of the present work is to examine the combustion processes inside the cylinder of a spark-ignition (SI) engine fueled with a methane-hydrogen blend with variable equivalence ratio. This combustion analysis ... -
Cycling Performances and Failure Modes for AGM and Standard Flooded Lead Acid Batteries under Partial State of Charge Mode
(American Society of Civil Engineers, 2016)In this work, the failure mode of the lead acid battery under 17.5% depth of discharge was predicted. Both the developed lead acid absorbent glass ma (AGM) battery for microhybrid applications and the standard flooded ... -
Theoretical Performance Limits of a Biogas–Diesel Powered Dual Fuel Diesel Engine for Different Combinations of Compression Ratio and Injection Timing
(American Society of Civil Engineers, 2016)The present work attempts to investigate the effect of compression ratio (CR) and injection timing (IT) on the energy and the exergy potential of a biogas-run dual fuel diesel engine. For experimentation, a 3.5 kW ... -
Experimental Study on the Effect of Concentrated Turbulence around the Spark Plug Zone in a Swirling Flow on a Hydrogen SI Engine Performance and Combustion Parameters
(American Society of Civil Engineers, 2016)This study investigates the effect of concentrated turbulence in the spark plug zone on engine performance and combustion parameters in a hydrogen engine. The swirling flow in the cylinder was directed to the spark plug ... -
Kinetic Study on Low-Rank Coal Char: Characterization and Catalytic CO2 Gasification
(American Society of Civil Engineers, 2016)A kinetic characterization of the CO2 gasification of chars from Chinese low-rank lignite coal is performed by isothermal thermogravimetry. The isothermal condition is 1,073 K, and the CO2 concentration range is 10–90%. ... -
Multistep Forecasting for Short-Term Wind Speed Using an Optimized Extreme Learning Machine Network with Decomposition-Based Signal Filtering
(American Society of Civil Engineers, 2016)Since wind fluctuates with strong variation even within a short-term period, it is quite difficult to describe the characteristics of wind or to estimate the power output that will be injected into the grid. In particular, ... -
Thermodynamic Comparison and Optimization of Supercritical CO2 Brayton Cycles with a Bottoming Transcritical CO2 Cycle
(American Society of Civil Engineers, 2016)This study investigated the feasibility of a combined cycle comprising a topping SCO2 cycle and a bottoming TCO2 cycle (SCO2-TCO2 cycle). A simple SCO2 cycle and a recompression SCO2 cycle were considered as the topping ... -
CFD Performance Prediction of a Parallel-Counterparallel Flow Heat Exchanger Used for the Treatment of Hypothermia
(American Society of Civil Engineers, 2016)The aim of this study is to investigate the use of computational fluid dynamics (CFD) in evaluating the thermal performance of a parallel/counterparallel flow heat exchanger used as part of a fluid warmer to treat hypothermia. ... -
Energetic and Exergetic Performance Evaluation of a Gas Turbine–Powered Cogeneration System Using Reverse Brayton Refrigeration Cycle for Inlet Air Cooling
(American Society of Civil Engineers, 2016)A conceptual gas turbine–powered cogeneration system is proposed where a reverse Brayton refrigeration cycle is employed for compressor inlet air cooling that can reduce the inlet air temperature close to 0° C or ... -
Market-Based Optimal Control of Plug-In Hybrid Electric Vehicle Fleets and Economic Analysis
(American Society of Civil Engineers, 2016)This paper proposes an optimization algorithm for coordinating charging/discharging activities of plug-in hybrid electric vehicles (PHEVs) within the electricity market environment. PHEV Fleets are considered as a promising ...