Journal of Solar Energy Engineering: Recent submissions
Now showing items 801-820 of 3077
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Thermal Behavior in a Transient State of a Case of Hollow Block: Transfer Function Coefficients
(The American Society of Mechanical Engineers (ASME), 2015)The aim of this work is to determine the empirical transfer function coefficients (TFCs) for the case of a hollow tile with two air cells deep in the vertical direction. We start with the prediction of combined heat transfer ... -
Prototype Testing of a Centrifugal Particle Receiver for High Temperature Concentrating Solar Applications
(The American Society of Mechanical Engineers (ASME), 2015)A novel concept of a particle receiver for hightemperature solar applications was developed and evaluated in the present work. The socalled Centrifugal Particle Receiver (CentRec) uses small bauxite particles as absorber, ... -
Efficiency Improvement of Photovoltaic Water Pumping Systems by Means of Water Flow Beneath Photovoltaic Cells Surface
(The American Society of Mechanical Engineers (ASME), 2015)Efficiency of photovoltaic water pumping systems (PVPS) decreases remarkably as PV cells temperature rises, thus to improve the performance of such systems and their efficiency, PV cells temperature should be kept as low ... -
A Comparative Study on the Optimization of a Ternary P3HT:PCBM:Pentacene Active Layer in Bulk Heterojunction Organic Solar Cells
(The American Society of Mechanical Engineers (ASME), 2015)This work shows a comparative and processing optimization study of the recent ternary bulk heterojunction (BHJ) of P3HT: PCBM:pentacene (1:0.9:0.1 wt. ratio) against the wellknown active layer of poly(3hexylthiophene) ... -
Simulating Pitching Blade With Free Vortex Model Coupled With Dynamic Stall Model for Conditions of Straight Bladed Vertical Axis Turbines
(The American Society of Mechanical Engineers (ASME), 2015)This study is on the straight bladed vertical axis turbines (VATs), which can be utilized for both wind and marine current energy. VATs have the potential of lower installation and maintenance cost. However, complex unsteady ... -
Determining the Cost Benefit of High Temperature Coatings for Concentrating Solar Power Thermal Storage Using Probabilistic Cost Analysis
(The American Society of Mechanical Engineers (ASME), 2015)Probabilistic cost analysis determined the cost benefit for applying a protective coating to the wetted surfaces of stainless steel tank walls for concentrating solar power (CSP) thermal storage applications. The model ... -
Assessment of Offshore Wind Energy Projects in Denmark. A Comparative Study With Onshore Projects Based on Regulatory Real Options
(The American Society of Mechanical Engineers (ASME), 2015)There is a gap in the literature on the assessment of renewable energy projects regarding the role of regulatory real options (RROs) that do not depend entirely on the project promoter and yet affect the value of the ... -
New Thermal Energy Storage Materials From Industrial Wastes: Compatibility of Steel Slag With the Most Common Heat Transfer Fluids
(The American Society of Mechanical Engineers (ASME), 2015)Slag is one of the main waste materials of the iron and steel manufacturing. Every year about 20 أ— 106 tons of slag are generated in the U.S. and 43.5 أ— 106 tons in Europe. The valorization of this byproduct as ... -
Modeling and Characterization of a Photovoltaic Array Based on Actual Performance Using Cascade Forward Back Propagation Artificial Neural Network
(The American Society of Mechanical Engineers (ASME), 2015)This paper proposes a novel prediction model for photovoltaic (PV) system output current. The proposed model is based on cascadeforward back propagation artificial neural network (CFNN) with two inputs and one output. The ... -
Improvement of the Photovoltaic Characteristics of Industrially Fabricated Solar Cells by Chemical Etching of the Si Surface
(The American Society of Mechanical Engineers (ASME), 2015)The efficiency of industrially fabricated solar cells and hence the power of the solar modules are affected by the surface treatment of the Siwafers during solar cell fabrication. Surface etching and formation of definite ... -
Molten Salt Spectroscopy for Quantification of Radiative Absorption in Novel Metal Chloride Enhanced Thermal Storage Media
(The American Society of Mechanical Engineers (ASME), 2015)This study describes the development and characterization of novel hightemperature thermal storage media, based on inclusion of transition metal chlorides in the potassium–sodium chloride eutectic system, (K–Na)Cl ... -
The Development of Direct Absorption and Storage Media for Falling Particle Solar Central Receivers
(The American Society of Mechanical Engineers (ASME), 2015)Spherical sintered bauxite particles between 200 خ¼m and 700 خ¼m in diameter have been shown to be effective in the direct absorption and storage of concentrated solar energy. These particles are commercially available ... -
Prediction of the Potential Induced Degradation of Photovoltaic Modules Based on the Leakage Current Flowing Through Glass Laminated With Ethylene Vinly Acetate
(The American Society of Mechanical Engineers (ASME), 2015)In the potential induced degradation (PID) phenomenon, the output power of a photovoltaic (PV) module decreases due to the high potential difference between the PV system and the ground. This voltage forcefully moves the ... -
Performance Enhancement of Partially Shaded Solar Photovoltaic Array Using Grouping Technique
(The American Society of Mechanical Engineers (ASME), 2015)The energy yield of the photovoltaic (PV) system is reduced to a greater extent under shaded conditions. Reconfiguration and repositioning techniques demand more number of sensors, switches, and an efficient control algorithm ... -
Effect of 1,8 Diiodooctane on the Performance of P3HT:PCBM Solar Cells
(The American Society of Mechanical Engineers (ASME), 2015)Effect of 1,8diiodooctane on the performance of poly(3hexylthiophene) (P3HT):[6,6]phenylC61butyric acid methyl ester (PCBM) solar cells with glass/indium tin oxide (ITO)/poly(3,4ethylenedioxythiophene):poly(styrenesulfonate) ... -
Comparison of Performance and Unsteady Loads of Multimegawatt Downwind and Upwind Turbines
(The American Society of Mechanical Engineers (ASME), 2015)The benefits and drawbacks of a multimegawatt downwind compared to upwind wind turbine are assessed using unsteady, threedimensional (3D) computational fluid dynamics. For the same operating conditions, the downwind turbine ... -
Thermal Annealing Effect on the Optical, Electrical and Morphological Properties of the PBTTT C12:PC71BM Blend Films
(The American Society of Mechanical Engineers (ASME), 2015)We investigate the effect of thermal annealing on the optical, morphological and photovoltaic (PV) properties of bulk heterojunction (BHJ) solar cell based on the poly[2,5bis(3dodecylthiophen2yl)thieno[3,2b]thiophene] ... -
Performance of Flat Plate and Compound Parabolic Concentrating Solar Collectors in Underfloor Heating Systems
(The American Society of Mechanical Engineers (ASME), 2015)There is a growing interest in using solar energy in underfloor heating systems. However, the large areas required for the installation of solar thermal collector's array can be discouraging, especially in the apartment ... -
Simulation of Energy Production in Grid Connected Photovoltaic Systems From Measured and Calculated Data From Clear Sky Radiation Model
(The American Society of Mechanical Engineers (ASME), 2015)This paper presents a comparison of the energy production in gridconnected photovoltaic systems (GCPPS) from measured and calculated radiation data. The Linke turbidity (TL) factor for the region of Porto Alegre, Brazil, ... -
Efficiency Estimations for Multijunction and Intermediate Band Solar Cells Using Actual Measured Solar Spectra in Japan
(The American Society of Mechanical Engineers (ASME), 2015)An intermediate band solar cell (IBSC) whose equivalent circuit is similar to a multijunction (MJ) solar cell but with an additional parallel diode connection is shown to be more robust to spectral variation than a ...