Journal of Solar Energy Engineering: Recent submissions
Now showing items 641-660 of 3077
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Design and Characterization of a 7.2 kW Solar Simulator
(The American Society of Mechanical Engineers (ASME), 2017)A 7.2 kW (electric input) solar simulator was designed in order to perform accelerated testing on absorber materials for concentrating solar power (CSP) technologies. computer-aided design (cad) software integrating a ... -
High-Speed Monitoring of Multiple Grid-Connected Photovoltaic Array Configurations and Supplementary Weather Station
(The American Society of Mechanical Engineers (ASME), 2017)Three grid-connected monocrystalline silicon photovoltaic arrays have been instrumented with research-grade sensors on the Gaithersburg, MD campus of the National Institute of Standards and Technology (NIST). These arrays ... -
Optimal V-Reflector Design With Maximum Solar Concentration
(The American Society of Mechanical Engineers (ASME), 2017)For low-concentration solar applications, v-reflectors are attractive choice to collect sunlight since they are simple to build with reduced manufacturing cost and technical requirements. In this paper, with the account ... -
Model (At Least) Twice, Build Once: Experiences With the Design–Bid–Build Process for Solar Photovoltaic Arrays
(The American Society of Mechanical Engineers (ASME), 2017)Commercial-scale solar photovoltaic (PV) arrays were designed, constructed, and are now operational on the Gaithersburg, Maryland campus of the National Institute of Standards and Technology (NIST). A design–bid–build ... -
Experimental Investigation on Heat Losses From Differentially Heated Cylindrical Cavity Receiver Used in Paraboloid Concentrator
(The American Society of Mechanical Engineers (ASME), 2017)In the present study, an experimental testing facility is created to analyze the heat losses from the cylindrical solar cavity. Tests are carried out under the temperature range from 225 °C to 425 °C for a cavity inclination ... -
Design of Carbon-Neutral Residential Communities in Kuwait
(The American Society of Mechanical Engineers (ASME), 2017)In this paper, a general methodology for designing carbon-neutral residential communities is presented. Both energy efficiency measures and renewable energy technologies are considered in the design approach. First, energy ... -
Least Squares Fitting of Computational Fluid Dynamics Results to Measured Vertical Wind Profiles
(The American Society of Mechanical Engineers (ASME), 2017)Microscale numerical modeling is currently the main tool used in wind industry to assess local wind resources. This paper presents a systematic procedure to adjust computational fluid dynamics (CFD) predicted wind profiles ... -
Examination of Photovoltaic Silicon Module Degradation Under High-Voltage Bias and Damp Heat by Electroluminescence
(The American Society of Mechanical Engineers (ASME), 2017)The photovoltaic (PV) modules are in PV arrays normally connected in series and thus some of them are exposed to high system voltages since frames of the PV modules are grounded. To predict the long-term PV system energy ... -
Coupled Concentrating Optics, Heat Transfer, and Thermochemical Modeling of a 100-kWth High-Temperature Solar Reactor for the Thermal Dissociation of ZnO
(The American Society of Mechanical Engineers (ASME), 2017)This work reports a numerical investigation of the transient operation of a 100-kWth solar reactor for performing the high-temperature step of the Zn/ZnO thermochemical cycle. This two-step redox cycle comprises (1) the ... -
Heat Transfer Characterization and Optimization of Latent Heat Thermal Storage System Using Fins for Medium Temperature Solar Applications
(The American Society of Mechanical Engineers (ASME), 2017)While solar thermal power plants are increasingly gaining attention and have demonstrated their applications, extending electricity generation after the sunset using phase change material (PCM) still remains a grand ... -
Cyclostationary Analysis of a Faulty Bearing in the Wind Turbine
(The American Society of Mechanical Engineers (ASME), 2017)Bearing faults occur frequently in wind turbines, thus resulting in an unplanned downtime and economic loss. Vibration signal collected from a failing bearing exhibits modulation phenomenon and “cyclostationarity.” In this ... -
Experimental Study of a Solar Air Heater With a New Arrangement of Transverse Longitudinal Baffles
(The American Society of Mechanical Engineers (ASME), 2017)This study presents a new design for improving the convection heat transfer coefficients of double-pass solar air heater. Three cases were described by using a different number of transverse baffles (three, five, and seven) ... -
Enhancement of Free Vortex Filament Method for Aerodynamic Loads on Rotor Blades
(The American Society of Mechanical Engineers (ASME), 2017)The aerodynamics of a wind turbine is governed by the flow around the rotor, where the prediction of air loads on rotor blades in different operational conditions and its relation to rotor structural dynamics is one of the ... -
Development of a Predictive Equation for Ventilation in a Wall-Solar Chimney System
(The American Society of Mechanical Engineers (ASME), 2017)A solar chimney is a natural ventilation technique that has potential to save energy consumption as well as to maintain the air quality in a building. However, studies of buildings are often challenging due to their large ... -
Methodology for Analysis of Thermal Behavior of Inverters for Photovoltaic Systems
(The American Society of Mechanical Engineers (ASME), 2017)The amount and quality of the energy converted by a photovoltaic system connected to the grid can be evaluated by experimental monitoring or computer simulation. The Solar Energy Laboratory at UFRGS developed a simulation ... -
Solar Field Optical Characterization at Stillwater Geothermal/Solar Hybrid Plant
(The American Society of Mechanical Engineers (ASME), 2017)Concentrating solar power (CSP) can provide additional thermal energy to boost geothermal plant power generation. For a newly constructed solar field at a geothermal power plant site, it is critical to properly characterize ... -
Optimum Multilayer-Graphene-Montmorillonite Composites From Sugar for Thermosolar Coatings Formulations
(The American Society of Mechanical Engineers (ASME), 2017)Solar thermal coatings are designed to achieve the highest incident solar flux into the receiver of a tower solar plant. These materials are subjected to extreme working conditions of temperature and solar concentrated ... -
Increasing Efficiency in the Extraction of Solar Heat Stored Underground With Perturb-and-Observe Control
(The American Society of Mechanical Engineers (ASME), 2017)This paper describes a perturb-and-observe (P&O) control aiming to increase the heat exchange between solar heat stored underground and the ambient of a single conditioned room without any heat pump. This P&O control ... -
Simulation Model of Photovoltaic and Photovoltaic/Thermal Module/String Under Nonuniform Distribution of Irradiance and Temperature
(The American Society of Mechanical Engineers (ASME), 2017)The modern concepts of sustainable cities and smart grids have caused an increase in the installation of solar systems in urban and suburban areas, where, due to the presence of many obstacles or design constraints, ... -
Effects of Preferential Concentration on Heat Transfer in Particle-Based Solar Receivers
(The American Society of Mechanical Engineers (ASME), 2017)The working principle of particle-based solar receivers is to utilize the absorptivity of a dispersed particle phase in an otherwise optically transparent carrier fluid. In comparison to their traditional counterparts, ...