scholarly journals Characterization of thermal performance and optical properties of a material under concentrated radiation using a high flux solar simulator

2017 ◽  
Author(s):  
Jawad Sarwar ◽  
Tarek Shrouf ◽  
Konstantions E. Kakosimos
Keyword(s):  
Optical Properties ◽  
Thermal Performance ◽  
High Flux ◽  
Solar Simulator

Design and characterization of a high-flux non-coaxial concentrating solar simulator

2018 ◽  
Vol 145 ◽  
pp. 201-211 ◽  
Author(s):  
Jun Xiao ◽  
Xiudong Wei ◽  
Raúl Navío Gilaber ◽  
Yan Zhang ◽  
Zengyao Li
Keyword(s):  
High Flux ◽  
Solar Simulator

scholarly journals Specification of Glazings for Façades Based on Spectrophotometric Characterization of Transmittance

2021 ◽  
Vol 13 (10) ◽  
pp. 5437
Author(s):  
Helenice Maria Sacht ◽  
Luís Bragança ◽  
Manuela Almeida ◽  
Rosana Caram
Keyword(s):  
Heat Transfer ◽  
Optical Properties ◽  
Energy Consumption ◽  
Heat Exchange ◽  
Thermal Performance ◽  
Near Infrared ◽  
Temperate Climate ◽  
Solar Control ◽  
Indoor Spaces

The correct specification of glazings for façades can reduce the energy consumption in buildings. The heat exchange occurs through transparent surfaces and radiation reaches the building as light and heat. Therefore, glazings significantly contribute to the heat transfer between outdoor and indoor spaces and act directly on daylighting and thermal comfort. This paper reports on the spectrophotometric characterization of glazings transmittance for the study of components of a modular façade system and its suitability for the climate of Portugal (temperate climate). The study focused on results of spectrophotometric measurements of optical properties, specifically the transmittance of some types of glazings (solar control, self-cleaning, low-e, float, and extra-clear) and two types of double glazings. The results show the percentage of transmission to ultraviolet, visible, and near-infrared regions and its importance, which enabled the analysis of the glazing efficiency regarding daylighting and the correlation to thermal performance. Subsidies and indications for the specification and adequate uses of transparent surfaces have been presented and complemented the datasheets available from the manufactures.

scholarly journals Characterization of a New 10 kWe High Flux Solar Simulator Via Indirect Radiation Mapping Technique

2019 ◽  
Vol 141 (2) ◽  
Author(s):  
Mostafa Abuseada ◽  
Cédric Ophoff ◽  
Nesrin Ozalp
Keyword(s):  
Heat Flux ◽  
Complementary Metal Oxide Semiconductor ◽  
Threshold Value ◽  
Oxide Semiconductor ◽  
Total Power ◽  
Mapping Technique ◽  
High Flux ◽  
Solar Simulator ◽  
A New Technique

This paper presents characterization of a new high flux solar simulator consisting of a 10 kW Xenon arc via indirect heat flux mapping technique for solar thermochemical applications. The method incorporates the use of a heat flux gauge (HFG), single Lambertian target, complementary metal oxide semiconductor (CMOS) camera, and three-axis optical alignment assembly. The grayscale values are correlated to heat flux values for faster optimization and characterization of the radiation source. Unlike previous work in heat flux characterization that rely on two Lambertian targets, this study implements the use of a single target to eliminate possible errors due to interchanging the targets. The current supplied to the simulator was varied within the range of 120–200 A to change the total power and to mimic the fluctuation in sun's irradiance. Several characteristic parameters of the simulator were studied, including the temporal instability and radial nonuniformity (RNU). In addition, a sensitivity analysis was performed on the number of images captured, which showed a threshold value of at least 30 images for essentially accurate results. The results showed that the flux distribution obtained on a 10 × 10 cm2 target had a peak flux of 6990 kWm−2, total power of 3.49 kW, and half width of 6.25 mm. The study concludes with the illustration and use of a new technique, the merging method, that allows characterization of heat flux distributions on larger areas, which is a promising addition to the present heat flux characterization techniques.

Spectral Characterization of PSI’s High-Flux Solar Simulator

2011 ◽  
Vol 134 (1) ◽  
Author(s):  
Ivo Alxneit ◽  
Henri Schmit
Keyword(s):  
Radial Distance ◽  
Wavelength Region ◽  
Spectral Characterization ◽  
Emission Lines ◽  
Characteristic Line ◽  
High Flux ◽  
Solar Simulator ◽  
Short Wavelength Region ◽  
Relative Contribution

In this publication, the detailed spectral characterization of the concentrated radiation of PSI’s 50 kW xenon arc lamp based solar simulator (HFSS) is reported. Spectra are presented for the range of 350–1600 nm recorded at different radial distances from the position of maximum concentration, i.e., from the center of the spot. The analysis shows that the relative intensity of the short wavelength region decreases with increasing radial distance from the center of the spot. At the same time, the relative contribution of the xenon emission lines increases. All spectra can be decomposed into a broad background described by a blackbody spectrum with a temperature of T = 6000 ± 200 K and the characteristic line spectrum of xenon.

Solvent Effects on the Electrical and Optical Properties of Nanocomposited MEH-PPV:TiO2 Films for Organic Solar Cells Application

2011 ◽  
Vol 364 ◽  
pp. 86-89 ◽  
Author(s):  
Fazlinashatul Suhaidah Binti Zahid ◽  
Puteri Sarah Binti Muhamad Saad ◽  
Mohamad Rusop
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Organic Solar Cells ◽  
Film Formation ◽  
Light Illumination ◽  
Solar Simulator ◽  
Polymer Properties ◽  
Nanocomposite Thin Films ◽  
Optical Behavior

The influence of organic solvent on the electrical and optical behavior of poly [2-methoxy-5-(2-ethylhexyloxy-p-phenylene-vinylene)] (MEH-PPV): Titanium Dioxide (TiO2) active layer has been investigated. The performance of the nanocomposite thin films varied depending on different type of solvent (chloroform, tetrahydrofuran (THF), toluene, xylene and 1,3-Dicholorobenzene) to dissolve MEH-PPPV at concentration of 20 mg/20ml. The solvent used to dissolve MEH-PPV has a dramatic effect on the polymer properties and characteristics due to different chain interaction, crystalline structure formation and surface morphology. The electrical properties of nanocomposited MEH-PPV: TiO2 thin films were measured by solar simulator in dark and under AM 1.5, 100 mW/cm2 white light illumination condition while the characterization of optical properties has been done using UV-VIS spectrophotometer to evaluate the absorbance as well as the transmittance. By comparing the nanocomposite thin films with the same weight MEH-PPV: TiO2, it was found the thin film which used 1,3-Dicholorobenze as a solvent has the highest conductivity around 338.64x103 S.m-1. However for the optical properties, solvent of xylene gives the highest absorption coefficient at 8.4x106 m-1. The dispersion of nanocomposited MEH-PPV:TiO2 and film formation reproducibility, these solvents showed that its affected film resistance and dispersion stability in the thin films.

scholarly journals Experimental and numerical characterization of a new 45 kW_el multisource high-flux solar simulator

2016 ◽  
Vol 24 (22) ◽  
pp. A1360 ◽  
Author(s):  
Gaël Levêque ◽  
Roman Bader ◽  
Wojciech Lipiński ◽  
Sophia Haussener
Keyword(s):  
High Flux ◽  
Solar Simulator ◽  
Numerical Characterization

Characterization of a 6 kW high-flux solar simulator with an array of xenon arc lamps capable of concentrations of nearly 5000 suns

2015 ◽  
Vol 86 (12) ◽  
pp. 125107 ◽  
Author(s):  
Robert Gill ◽  
Evan Bush ◽  
Philipp Haueter ◽  
Peter Loutzenhiser
Keyword(s):  
High Flux ◽  
Solar Simulator

Characterization of the KTH high-flux solar simulator combining three measurement methods

Energy ◽  
2017 ◽  
Vol 141 ◽  
pp. 2091-2099 ◽  
Author(s):  
Jorge Garrido ◽  
Lukas Aichmayer ◽  
Wujun Wang ◽  
Björn Laumert
Keyword(s):  
Measurement Methods ◽  
High Flux ◽  
Solar Simulator
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