Journal of Energy Engineering: Recent submissions
Now showing items 221-240 of 1539
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Influence of Extension Ratio on the Performance of the Modified Savonius Hydrokinetic Turbine
(ASCE, 8/28/2023 )In the present investigation, a modified Savonius hydrokinetic turbine of 0.245 m turbine diameter (D), 0.1 overlap ratio, 0.2 shape factor, and 0.002 m blade thickness (t) has been investigated numerically to ... -
Development of a High-Power Density Diesel Engine with a Heat-Insulation Coating: Application of Ultrahigh-Pressure Fuel Injection
(ASCE, 7/28/2023 )Thermal insulation coating is considered a low heat rejection technology for improving the thermal efficiency of engines in the future. A thermal-insulation-coated piston was used to reduce an engine’s heat loss; however, ... -
Numerical Comparison of Hydrogen and CO2 Storage in Deep Saline Aquifers from Pore Scale to Field Scale
(ASCE, 8/4/2023 1)Underground hydrogen storage (UHS) and carbon dioxide capture and storage (CCS) have been the frontiers of energy transition of petroleum and coal industries. The similarities and differences of UHS and CCS are the key ... -
On the Impact of Temperature on Shale Swelling and Expansion: A Diffuse Double-Layer Perspective
(ASCE, 6/23/2023 )Using a newly developed thermo-linear swelling test, this work investigated the influence of temperature on shale swelling and shrinkage and Debye-Hückel length alterations within the diffuse double layer. Furthermore, the ... -
Experimental Study of Deformation Risk and Interpolation Analysis of Temperature for Water Walls under Flexible Low-Load Conditions
(ASCE, 6/19/2023 )With the development of renewable energy in power generation, a large number of thermal power plants operate under flexible working conditions. To study water wall deformation risk under flexible low-load conditions, a ... -
Design of a Novel Multidimensional Forced-Convections Flow Channel with Both Blockages and Under-Rib Channels for PEMFC
(ASCE, 7/14/2023 )The bipolar plate flow channels are critical to the operation of proton exchange membrane fuel cells (PEMFC). The appearance of a water flood phenomenon at the cathode flow channel affects mass transport capacity and output ... -
Pore-Throat Structure in the Chang 7 Subformation Influencing the Differential Accumulation of Tight Sandstone Oil: Insight from SEM, Rate-Controlled Mercury, and High-Pressure Mercury Results
(ASCE, 7/31/2023 )The complicated pore-throat structure of unconventional resource formations such as tight sandstones influences petroleum accumulation and even exploitation, because the pore-throat structure is difficult to mark. A ... -
Flame Characteristics and Abnormal Combustion of Methane Port Injection and Isooctane Direct Injection with Injection Timings Considered
(ASCE, 6/19/2023 )Natural gas (NG) is a low-carbon fuel that can achieve low carbon emissions and high efficiencies. However, the low mean molecular mass and low energy density of methane result in low engine performance, and blending methane ... -
Numerical Investigations of Low-Salinity Water Flooding in a Saline Sandstone Reservoir
(ASCE, 7/24/2023 )In the era of dominance of renewable energies and the pandemic-affected world, oil industries must produce oil from extant fields most economically. Further, increasing ecological awareness makes oil companies look forward ... -
Optimal Operation Method for Electricity–Heat Integrated Energy System Considering Vulnerability Prevention
(ASCE, 8/26/2023 )The increasing integration of electricity and heating networks escalates the operation risk of an integrated energy system (IES). The vulnerable components in IES, which play an important role of aggravating the spread of ... -
Effects of Microstructure on Water Removal in the U-Shaped Region of PEMFC Serpentine Flow Channel
(ASCE, 7/13/2023 )The proton-exchange membrane fuel cell (PEMFC) bipolar plate serpentine flow channel U-shaped region is prone to the accumulation effect, which poses serious difficulties for fuel cell water management. As a result, a deep ... -
Simulation Calculation and Analysis of Connate Water Convection on Steam Chamber Expansion in Steam-Assisted Gravity-Drainage Process
(ASCE, 6/5/2023 1)Steam-assisted-gravity-drainage (SAGD) is a widely employed method to enhance heavy oil production and efficiency, and the key to ensuring its steady operation is the maintenance of a steam chamber. Heat conduction and ... -
Comparative Analysis of Transient Thermodynamic Performance for the Parabolic-Trough Photothermal Conversion Technology
(ASCE, 5/29/2023 )The intermittent nature of solar energy poses a great challenge to the parabolic trough collector (PTC) technology. Although PTC technology is mature in application, its thermodynamic performance in transient processes is ... -
Performance Improvement of Proton Exchange Membrane Fuel Cell by Modified Flow Field Design
(ASCE, 7/25/2023 )The power output of proton exchange membrane fuel cells (PEMFCs) is built upon the uniform distribution of reacting gases and the mitigation of flooding of water on the cathode side of the fuel cell. This paper proposes a ... -
Numerical Study on Coal–Sludge Cocombustion Characteristics and NOx Emission Behaviors in a 330-MW Wall-Fired Boiler
(ASCE, 6/21/2023 )Cofiring sludge with coal based on existing power plants is a promising method to realize harmless recycling treatment for sludge disposal. However, the influences of sludge addition on NOx emission are still controversial. ... -
Optimization of Cooling Strategy for Lithium Battery Pack Based on Orthogonal Test and Particle Swarm Algorithm
(ASCE, 6/23/2023 )This paper describes the design and optimization of a cooling strategy based on a battery cooling system with indirect liquid-cooled plate heat exchange. The performance of the battery cooling system was analyzed using ... -
A Novel Adaptive Parallel Model with Knowledge-Aided Conversion Efficiency Assessment for Wind Turbine Condition Monitoring
(ASCE, 5/30/2023 )Monitoring wind turbines is essential for their safe operation on wind farms. However, the majority of data-driven monitoring strategies do not consider expert knowledge. Consequently, they cannot simultaneously monitor ... -
Multivariate Anomaly Detection and Early Warning Framework for Wind Turbine Condition Monitoring Using SCADA Data
(ASCE, 8/25/2023 )Wind speed power characteristics are essential in evaluating the state of the wind turbine. The supervisory control and data acquisition (SCADA) data are massively collected and could be important resources for condition ... -
Experimental Study of Influencing Factors on Mechanical Properties for New Coal-Like Materials
(ASCE, 6/7/2023 1)Physical similarity simulation is one of the best methods for improving coal bed methane extraction efficiency, and the development of reasonable materials is important for improving physical similarity simulation testing ... -
Research on Productivity Prediction Model of Three-Dimensional Directional Wells in Different Reservoirs
(ASCE, 6/5/2023 1)Productivity prediction of perforation completion is key for well optimizing completion methods and reservoir engineering research. Productivity prediction models using an additional pressure drop to represent skin factor ...