Journal of Solar Energy Engineering: Recent submissions
Now showing items 941-960 of 3077
-
An Outdoor Experiment of a Lens Walled Compound Parabolic Concentrator Photovoltaic Module on a Sunny Day in Nottingham
(The American Society of Mechanical Engineers (ASME), 2014)A lenswalled compound parabolic concentrator (lenswalled CPC) has a larger half acceptance angle than a mirror CPC for the same geometrical concentration ratio of 2.5X, so it would be more suitable for the buildingintegrated ... -
Hybrid Solar and Coal Fired Steam Power Plant Based on Air Preheating
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, a hybrid solar and coalfired steam power plant with secondary air preheating is proposed, which has much higher thermal efficiency than existing hybrid solar and coalfired power generation systems. Five cases ... -
Economic Chances and Technical Risks of the Internal Direct Absorption Receiver
(The American Society of Mechanical Engineers (ASME), 2014)Increased receiver temperatures of solar tower power plants are proposed to decrease the plants levelized electricity costs (LEC) due to the utilization of supercritical steam power plants and thus higher overall plant ... -
Research on Joint Power and Loads Control for Large Scale Directly Driven Wind Turbines
(The American Society of Mechanical Engineers (ASME), 2014)Emphasis of this article is on the dynamic characteristics analysis of individual pitch control for MW scale directly driven wind turbines with permanent magnet synchronous generator (PMSG). The pitch control objectives ... -
Heliostat Field Layout Improvement by Nonrestricted Refinement
(The American Society of Mechanical Engineers (ASME), 2014)A new method for the heliostat field optimization is presented. The method is intended for further performance improvement after initial layout with a standard heliostat field layout tool. During the field refinement, the ... -
Prism Based Sunlight Concentrator Layout: A Genetic Algorithm Solution
(The American Society of Mechanical Engineers (ASME), 2014)Solar energy is a promising source of energy because it is abundant and harmless to the environment. One of the critical issues involving solar energy is the layout design of sunlight concentrators. This study presents a ... -
Drag Reduction Using Riblet Film Applied to Airfoils for Wind Turbines
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents results of a study that was commissioned by the 3M Renewable Energy Division to measure the drag reduction by using riblet film on airfoils specifically designed for wind turbine applications. The DU ... -
Filtering Procedures for Reliable Outdoor Temperature Coefficients in Different Photovoltaic Technologies
(The American Society of Mechanical Engineers (ASME), 2014)Power temperature coefficients خ´ (TCo) measured indoor at standard test conditions (STC) (as given on products datasheet) always present a negative sign; an increase in temperature leads to a reduced power output. ... -
Condition Monitoring the Drive Train of a Direct Drive Permanent Magnet Wind Turbine Using Generator Electrical Signals
(The American Society of Mechanical Engineers (ASME), 2014)The benefit of wind turbine (WT) can be significantly improved through a wellorganized conditionbased maintenance strategy. However, such a target has not been fully achieved today. One of the major reasons is lack of an ... -
Economic Potential of Innovative Receiver Concepts With Different Solar Field Configurations for Supercritical Steam Cycles
(The American Society of Mechanical Engineers (ASME), 2014)The cost reduction potential of solar power towers (SPT) is an important issue concerning its market introduction. Raising the steam process temperature and pressure can lead to a cost reduction due to increased overall ... -
Computational Analysis of a Pipe Flow Distributor for a Thermocline Based Thermal Energy Storage System
(The American Society of Mechanical Engineers (ASME), 2014)The overall efficiency of a concentrating solar power (CSP) plant depends on the effectiveness of thermal energy storage (TES) system (Kearney and Herrmann, 2002, “Assessment of a Molten Salt Heat Transfer Fluid,†... -
Dynamic Model of a Vanadium Redox Flow Battery for System Performance Control
(The American Society of Mechanical Engineers (ASME), 2014)The vanadium redox flow battery (VRFB) is an attractive grid scale energy storage option, but high operating cost prevents widespread commercialization. One way of mitigating cost is to optimize system performance, which ... -
Parameter Estimation in Modeling of Photovoltaic Panels Based on Datasheet Values
(The American Society of Mechanical Engineers (ASME), 2014)The increasing demand for renewable energy sources in recent years has triggered technological advancements in photovoltaic (PV) panels. Widespread use of largescale PV units has revealed the sensitivity in PV panel modeling ... -
Thermo Economic Optimization of Hybridization Options for Solar Retrofitting of Combined Cycle Power Plants
(The American Society of Mechanical Engineers (ASME), 2014)A thermoeconomic optimization model of an integrated solar combinedcycle (ISCC) has been developed to evaluate the performance of an existing combinedcycle gas turbine (CCGT) plant when retrofitted with solar trough ... -
Optical Parameters in High Efficiency Optical Receivers With a Parabolic Reflector Before and After Coating With Ag Film
(The American Society of Mechanical Engineers (ASME), 2014)Highefficiency optical receivers before and after the coating of Ag film are composed of a parabolic reflector, a solid parabolic second optical element (SOE), and a Fresnel/aspheric concentrating lens. The optical receivers ... -
Testing of High Performance Concrete as a Thermal Energy Storage Medium at High Temperatures
(The American Society of Mechanical Engineers (ASME), 2014)Concrete is tested as a sensible heat thermal energy storage (TES) material in the temperature range of 400–500 آ°C (752–932 آ°F). A molten nitrate salt is used as the heat transfer fluid (HTF); the HTF is circulated ... -
Investigation of Shroud Geometry to Passively Improve Heat Transfer in a Solar Thermal Storage Tank
(The American Society of Mechanical Engineers (ASME), 2014)A shroud and baffle configuration is used to passively increase heat transfer in a thermal store. The shroud and baffle are used to create a vena contracta near the surface of the heat exchanger, which will speed up the ... -
Characterization of Pyromark 2500 Paint for High Temperature Solar Receivers
(The American Society of Mechanical Engineers (ASME), 2014)Pyromark 2500 is a siliconebased hightemperature paint that has been used on central receivers to increase solar absorptance. The radiative properties, aging, and selective absorber efficiency of Pyromark 2500 are presented ... -
A Light Harvesting Policy on Black Counter Electrode for Enhanced Performance of Dye Sensitized Solar Cells
(The American Society of Mechanical Engineers (ASME), 2014)This work presents a novel light harvesting policy for a black counter electrode (BCE) to enhance the performance of dyesensitized solar cells (DSSCs), which uses a metalbased light scattering layer (MLSL) that is formed ... -
Thermal Performance of Two Phase Thermosyphon Flat Plate Solar Collectors Using Nanofluid
(The American Society of Mechanical Engineers (ASME), 2014)A solar heat pipe collector was designed and fabricated to study its performance of the outdoor test condition. The thermal performance of the wickless heat pipe solar collector was investigated for pure water and nanofluid ...