Journal of Energy Engineering: Recent submissions
Now showing items 381-400 of 1539
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Inexact Credibility-Constrained Programming Approach for Electricity Planning in Ontario, Canada
(ASCE, 8/1/2021)Under current changing climatic conditions, there has been a growing interest in green energy to mitigate carbon emissions. As such, proper management and planning of electricity are essential to mitigating climate change. ... -
Feasibility of Blockchain-Based Energy Trading within Islanded Microgrids in Alexandria, Egypt
(ASCE, 6/1/2021)Recent developments in power system and internet technology introduced blockchain technology to energy trading. In addition, the growing penetration of distributed energy resources made the division of distribution systems ... -
Research on PEMFC Internal Temperature Predictions and Thermal Management Strategy Based on a Kalman Algorithm
(ASCE, 6/1/2021)The study addresses proton exchange membrane fuel cell (PEMFC) internal temperature predictions and the designed thermal management strategy based on the predicted temperature. The effect of temperature difference on PEMFC ... -
Effects of NOx-SOx Addition on Methane Ignition: Toward a Kinetic Understanding for Marine Engine Applications
(ASCE, 6/1/2021)This paper presents a computational study of the effects of nitrogen and sulfur oxides doping on the ignition of methane-air mixtures under marine engine–like conditions. The performance of four detailed chemical kinetic ... -
Sponge-Supported Triboelectric Nanogenerator for Energy Harvesting from Rail Vibration
(ASCE, 6/1/2021)Smart health monitoring based on a wireless sensor network plays a crucial role in maintaining the efficiency and safety of railway systems during operation, while the power source of the railway monitoring system remains ... -
Transient Simulation of a Building-Integrated Hybrid Solar Collector/Nocturnal Radiator with In-Built Thermal Storage for Space Cooling in Owerri, Nigeria
(ASCE, 4/1/2021)The transient model of a hybrid solar collector/nocturnal radiator with thermal energy storage for solar water heating and its nocturnal radiative cooling was deployed in simulating space comfort cooling in Owerri in ... -
Performance Optimization and Water Management of Polymer Electrolyte Membrane Fuel Cell with Two-Direction Graded Porosity Design of Cathode Gas Diffusion Layer
(ASCE, 4/1/2021)A three-dimensional nonisothermal two-phase flow model is developed to analyze the effects of cathode gas diffusion layer (GDL) porosity variations on the current density distribution and liquid water saturation in a proton ... -
Thermodynamic and Economic Analysis of a Novel Solar-Assisted Ground Source Absorption Heat Pump System
(ASCE, 4/1/2021)Hybrid utilization of solar and geothermal energy is an attractive option to solve the global energy crisis as well as environmental issues. A solar-assisted ground source absorption heat pump (SGSAHP) system is proposed ... -
Calculation of Combustion Phases in a Diesel Engine Based on the Difference between Motoring and Combustion Pressures
(ASCE, 4/1/2021)To analyze the combustion and exhaust characteristics of internal combustion engines, it is important to analyze combustion phases, such as ignition delay, premixed combustion period, and diffusion combustion period, by ... -
Characteristics of Electric Energy Conversion in Pneumatic System Based on Piezoelectric Generator
(ASCE, 4/1/2021)This paper reports the development of a high load-carrying capacity piezoelectric generator (PG) to harvest the great amount of compressed air energy wasted by the moving cylinder in a pneumatic system. The PG is designed ... -
Experimental Study of the Flame Structural Characteristics and Self-Similar Propagation of Syngas and Air Turbulent Expanding Premixed Flame
(ASCE, 4/1/2021)In order to study the structural characteristics and self-similar propagation of a syngas/air mixture turbulent expanding premixed flame, experimental studies under various equivalent ratios (0.6, 0.8, and 1.0) and hydrogen ... -
Vertical-Axis Wind Turbine Blade-Shape Optimization Using a Genetic Algorithm and Direct-Forcing Immersed Boundary Method
(ASCE, 4/1/2021)The aim of this study was to prove that an optimization method combining genetic algorithms with a direct-forcing immersed boundary method as a distinguished numerical method could improve the performance of vertical-axis ... -
Experimental Investigation of the Effect of Direct Water Injection on Combustion, Knock, and Emissions for LPG-Diesel Dual-Fuel Engine
(ASCE, 2/1/2021)Liquefied petroleum gas (LPG) fuel has a high octane number and high heating value. These features make LPG a rather convenient alternative fuel for spark-ignition engines. On the other hand, using only LPG in diesel engines ... -
Joint Planning of a Distribution System and a Charging Network for Electric Vehicles
(ASCE, 2/1/2021)The spatial-temporal distribution of electric vehicle (EV) charging loads can be improved by implementing optimized charging scheduling, and by the joint planning of a distribution network (DN) and a charging network of ... -
Energy, Exergy, and Economic Investigation of the Effect of Nanoparticle Mixture Ratios on the Thermal Performance of Flat Plate Collectors Using Al2O3–ZnO Hybrid Nanofluid
(ASCE, 2/1/2021)The study evaluated the effects of nanoparticle mixture ratios on the thermal performance of a flat plate collector (FPC) fitted with a torque stirrer operating with Al2O3–ZnO/water nanofluid. Al2O3 and ZnO nanoparticles ... -
Efficiency Boosting and Steam Saving for a Steam-Injected Gas Turbine Engine: Optimization Study of the Running Conditions
(ASCE, 2/1/2021)The increasing demand for gas turbines motivates the need to improve their performance and reduce the associated exhaust pollutants. Steam injection is an effective technique for boosting power because it increases the ... -
Computational Analysis of Spray Formation in Large Two-Stroke Marine Diesel Engine Atomizers
(ASCE, 4/1/2021)Large two-stroke marine diesel engines have special injector geometries which differ substantially from the configurations used in most other diesel engine applications. In particular, injector orifices are distributed in ... -
Optimal Hourly Scheduling for Wind–Hydropower Systems with Integrated Pumped-Storage Technology
(ASCE, 6/1/2021)It has been a significant challenge to ensure high-efficiency, stable power supplies in complementary wind–hydropower generation systems, and there are increasing concerns about power curtailment and uncertainty control ... -
Atomization Mechanism of Internally Mixing Twin-Fluid Y-Jet Atomizer
(ASCE, 2/1/2021)The atomization mechanism of the gas-liquid multiphase flow through an internally mixing twin-fluid Y-jet atomizer has been studied by examining both the internal and external flow patterns. Superheated steam and light ... -
Numerical Investigation of Effects of Turbulence Intensity on Aerodynamic Performance for Straight-Bladed Vertical-Axis Wind Turbines
(ASCE, 2/1/2021)Vertical-axis wind turbines (VAWTs) may be subjected to varying degrees of turbulence in practice. In the present study, the computational fluid dynamics (CFD) method and improved delayed detached eddy simulation (IDDES) ...