Journal of Solar Energy Engineering: Recent submissions
Now showing items 601-620 of 3077
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Moving-Horizon Modulating Functions-Based Algorithm for Online Source Estimation in a First-Order Hyperbolic Partial Differential Equation
(The American Society of Mechanical Engineers (ASME), 2017)In this paper, an online estimation algorithm of the source term in a first-order hyperbolic partial differential equation (PDE) is proposed. This equation describes heat transport dynamics in concentrated solar collectors ... -
Cost-Effective Light-Mixing Module for Solar-Lighting System Appended With Auxiliary RGBW Light-Emitting Diodes
(The American Society of Mechanical Engineers (ASME), 2017)A light-mixing module consisting of a compound parabolic concentrator (CPC) and a light-mixing tube is proposed herein to realize a uniform and efficient solar-lighting system. In this lighting system, the sunlight collected ... -
A Novel Iris Mechanism for Solar Thermal Receivers
(The American Society of Mechanical Engineers (ASME), 2017)Variable aperture mechanisms are being used in many fields including medicine, electronics, fluid mechanics, and optics. The main design characteristics of these aperture concepts are the use of multiple blades regulating ... -
Thermodynamic Optimization of Supercritical CO2 Brayton Power Cycles Coupled to Line-Focusing Solar Fields
(The American Society of Mechanical Engineers (ASME), 2017)An opportunity for increasing the parabolic solar power plant efficiency is substituting the actual subcritical Rankine power cycles with the innovative s-CO2 Brayton cycles. In this paper, three configurations are assessed: ... -
Comparison-Based Optical Assessment of Hyperboloid and Ellipsoid Reflectors in a Beam-Down Solar Tower System With Linear Fresnel Heliostats
(The American Society of Mechanical Engineers (ASME), 2017)Beam-down concentrating solar tower (BCST) is known for its merits in easy installation and maintenance as well as lower convection heat loss of the central receiver (CR) when comparing to a traditional concentrated solar ... -
Computer Analysis of S822 Aerofoil Section for Blades of Small Wind Turbines at Low Wind Speed
(The American Society of Mechanical Engineers (ASME), 2017)The power generated in wind turbine depends on wind speed and parameters of blade geometry like aerofoil shape, blade radius, chord length, pitch angle, solidity, etc. Aerofoil selection is the crucial factor in establishing ... -
A Novel Solar Cell Shallow Emitter Formation Process by Ion-Implantation and Dopant Modulation Through Surface Chemical Etching
(The American Society of Mechanical Engineers (ASME), 2017)Ion-implantation is an advanced technology to inject dopants for shallow junction formation. Due to the ion-induced sputtering effect at low implant energy where dopants tend to accumulate at the silicon surface, the excess ... -
Modeling Radiative–Convective Panels for Nighttime Passive Cooling Applications
(The American Society of Mechanical Engineers (ASME), 2017)Passive cooling by combined radiation–convection from black panels at night is a potential source of significant energy-efficient cooling for both homes and industry. Assessing the technology requires system models that ... -
Thermo-Fluid Optimization of a Solar Porous Absorber With a Variable Pore Structure
(The American Society of Mechanical Engineers (ASME), 2017)Optimization based on reconstruction of the velocity, temperature, and radiation fields in a porous absorber with continuous linear porosity or pore diameter distribution is carried out in this work. This study analyzes ... -
A Comprehensive Modeling of Grid-Connected Photovoltaic Systems Using Multiphase Converter Based on Reliability Concepts
(The American Society of Mechanical Engineers (ASME), 2017)This paper proposes a new method based on a Markov model to calculate the reliability of grid-connected photovoltaic (PV) systems. This system is a grid-connected PV system consisting of PV modules, a multiphase DC–DC ... -
A Comparative Investigation of Two Types of MHPA Flat-Plate Solar Air Collector Based on Exergy Analysis
(The American Society of Mechanical Engineers (ASME), 2017)In this study, a comparative investigation of two types of microheat pipe array (MHPA) flat-plate solar air collectors (FPSAC) based on exergy analysis has been conducted. The thermal performance of MHPA-type solar air ... -
Curvature Variability Study for Small- and Large-Scale Linear Fresnel Solar Fields: A Step Toward Optimization
(The American Society of Mechanical Engineers (ASME), 2017)Reducing levelized electricity costs of concentrated solar power (CSP) plants can be of great potential in accelerating the market penetration of these sustainable technologies. Linear Fresnel reflectors (LFRs) are one of ... -
Use of Seismic Analyses for the Wind Energy Industry
(The American Society of Mechanical Engineers (ASME), 2017)This paper proposes new seismic-based methods for use in the wind energy industry with a focus on wind turbine condition monitoring. Fourteen Streckeisen STS-2 Broadband seismometers and two three-dimensional (3D) sonic ... -
Aerodynamic Analysis of an Airfoil With Leading Edge Pitting Erosion
(The American Society of Mechanical Engineers (ASME), 2017)Leading edge erosion is a considerable threat to wind turbine performance and blade maintenance, and it is very imperative to accurately predict the influence of various degrees of erosion on wind turbine performance. In ... -
Determination of Parabolic Trough Solar Collector Efficiency Using Nanofluid: A Comprehensive Numerical Study
(The American Society of Mechanical Engineers (ASME), 2017)Due to significant reduction in fossil fuel sources, several researches have been conducted recently to explore modern sources of renewable energy. One of the major fields in the category of renewable energy harnessing ... -
Short-Duration Performance Acceptance Test of Parabolic Trough Solar Field: A Case Study
(The American Society of Mechanical Engineers (ASME), 2017)Extensive solar field performance testing is often required as part of the plant commissioning process in order to ensure that actual solar field performance satisfies both technical specifications and performance guarantees ... -
A Solar Reactor Design for Research on Calcium Oxide-Based Carbon Dioxide Capture
(The American Society of Mechanical Engineers (ASME), 2017)An engineering design for a novel 1-kW solar-driven reactor to capture carbon dioxide via the calcium oxide-based two-step carbonation–calcination cycle has been completed. The reactor consists of a downward-facing cylindrical ... -
Effect of Flow Area to Fluid Power and Turbine Pressure Drop Factor of Solar Chimney Power Plants
(The American Society of Mechanical Engineers (ASME), 2017)In this paper, a theoretical model of solar chimney power plants (SCPPs) is presented based on compressible ideal gas law assumptions. The theoretical optimal turbine pressure drop factors (TPDFs) for constant and nonconstant ... -
Modeling and Analysis of an Efficient Porous Media for a Solar Porous Absorber With a Variable Pore Structure
(The American Society of Mechanical Engineers (ASME), 2017)A theoretical mathematical model that considers the continuous linear porosity or pore diameter distribution is established to develop a novel porous absorber with variable pore structure, which will result in a thermopressure ... -
Computational Fluid Dynamics Simulation and Experimental Study of Key Design Parameters of Solar Thermal Collectors
(The American Society of Mechanical Engineers (ASME), 2017)Numerical simulation enables the optimization of a solar collector without the expense of building prototypes. This study details an approach using computational fluid dynamics (CFD) to simulate the performance of a solar ...