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Keywords: optics
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Journal Articles
Accepted Manuscript
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Guest Editorial
J. Sol. Energy Eng.
Paper No: SOL-24-1244
Published Online: October 14, 2024
...: megord@sandia.gov Email: Marc.Roeger@dlr.de Email: john.pye@anu.edu.au optics renewable solar solar tower Accepted Manuscript Not Copyedited Journal of Solar Energy Engineering. Received October 07, 2024; Accepted manuscript posted October 08, 2024. doi:10.1115/1.4066839 Copyright ©...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. December 2024, 146(6): 061008.
Paper No: SOL-23-1178
Published Online: September 30, 2024
... of base reflectivity and average soiling Cleanliness factor as a function of time within a washing cycle 63 washes/year (approx. 1 per 6 days) 2021 SAM baseline Degradation rate as a function of time (%/month) No degradation assumed 2021 SAM baseline Optical error (single-axis slope-error...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. December 2024, 146(6): 061009.
Paper No: SOL-23-1334
Published Online: September 30, 2024
...Rebecca Mitchell; Kyle Sperber; Michael Grabel; Guangdong Zhu Optics plays a major role in the effectiveness of concentrating solar power (CSP) technologies. The nonintrusive optical (NIO) approach developed by the National Renewable Energy Laboratory uses uncrewed aircraft system (UAS)-based...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. December 2024, 146(6): 061007.
Paper No: SOL-23-1214
Published Online: August 27, 2024
... of the segment mirrors of each heliostat. The method is based on the sunlight directed toward the receiver, and thus works under full operational conditions and without the need of secondary optical alignments. It is based on retroreflectors (“retros”) to simultaneously return samples of the sunlight reflected...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. February 2025, 147(1): 011007.
Paper No: SOL-23-1221
Published Online: August 7, 2024
... as the asymmetric compound parabolic concentrator (ACPC). To date, there is no published experimental data at different latitudes on the long-term performance of these systems at these latitudes nor how location would modify the optical characteristics of deployed systems. Previous theoretical research...
Journal Articles
Julian J. Krauth, Christoph Happich, Niels Algner, Rafal Broda, Andreas Kämpgen, Alexander Schnerring, Steffen Ulmer, Marc Röger
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. December 2024, 146(6): 061005.
Paper No: SOL-23-1349
Published Online: July 19, 2024
...) , Freiburg, Germany , Sept. 28–Oct. 2 , p. 070005 . [6] Mitchell , R. A. , and Zhu , G. , 2020 , “ A Non-Intrusive Optical (NIO) Approach to Characterize Heliostats in Utility-Scale Power Tower Plants: Methodology and In-Situ Validation ,” Sol. Energy , 209 , pp. 431 – 445 . 10.1016...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. December 2023, 145(6): 061012.
Paper No: SOL-22-1280
Published Online: October 4, 2023
... deg 0.50 cm 2 3 Devices and Services 15R -USB (D&S) Specular (15 mrad, 25 mrad, 46 mrad) 660-nm peak irradiance 15 deg (5.1×10 −4 ) cm 2 5 Surface Optics Corporation (SOC) Solar 410 Hemispherical/specular Bands from 335–2500 nm Near normal 0.18 cm 2 20 Table 3...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. February 2024, 146(1): 011002.
Paper No: SOL-22-1178
Published Online: May 25, 2023
...Matteo Timpano; Thomas A. Cooper This paper presents a detailed analysis of the optical performance of circular trough concentrators with tubular receivers. First, a simple analytical formula for the achievable geometric concentration ratio as a function of the rim angle and acceptance angle...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Technical Briefs
J. Sol. Energy Eng. October 2023, 145(5): 054501.
Paper No: SOL-22-1294
Published Online: May 19, 2023
... shape formed by the combined reflectors does not need to be paraboloidal; for example, it could be a flat surface tilted appropriately. Small gaps between adjacent reflectors would be needed to reduce shading and blocking losses. The paraboloidal shape is convenient for use in SAM because the optical...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. August 2023, 145(4): 041004.
Paper No: SOL-22-1277
Published Online: December 26, 2022
... flow heat transfer optics parabolic trough radiation simulation solar receiver sustainability thermal power Concentrated solar thermal energy applications play an important role in transitioning our current energy system to a more sustainable system. In such a system, solar thermal...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. June 2023, 145(3): 031012.
Paper No: SOL-22-1148
Published Online: December 6, 2022
.... , and Doblaré Castellano , M. , 2016 , “ Optical Analysis of a Two Stage XX Concentrator for Parametric Trough Primary and Tubular Absorber With Application in Solar Thermal Energy Trough Power Plants ,” ASME J. Sol. Energy. Eng. , 138 ( 4 ), p. 041002 . 10.1115/1.4032944 [50] Canavarro , D...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. June 2023, 145(3): 031008.
Paper No: SOL-21-1412
Published Online: November 11, 2022
... Foundation (Grant No. CBET-2103008). There are no conflicts of interest. The datasets generated and supporting the findings of this article are obtainable from the corresponding author upon reasonable request. ℓ = optical index ( a , e , or s for absorption, extinction...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. December 2022, 144(6): 061005.
Paper No: SOL-21-1352
Published Online: June 13, 2022
..., TEM 00 -mode laser operation can prevent damage in the optics of the laser resonator due to its smooth profile, avoiding the appearance of hot sites inside the Nd:YAG laser media [ 27 ]. The decrease in the laser rod volume makes the laser material more resistant to thermal stress and thermal load...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Design Innovation Paper
J. Sol. Energy Eng. October 2022, 144(5): 055001.
Paper No: SOL-21-1304
Published Online: March 22, 2022
... collector optics solar receiver solar thermal power The main advantage of concentrating solar thermal (CST) power plants over many other forms of renewable energy is that collected energy can be stored quite cheaply and very efficiently for many hours in the form of heat and then converted...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Technology Review
J. Sol. Energy Eng. June 2022, 144(3): 030906.
Paper No: SOL-21-1321
Published Online: March 18, 2022
...William T. Hamilton; Michael J. Wagner; Alexander J. Zolan solarpilot is a software package that generates solar field layouts and characterizes the optical performance of concentrating solar power (CSP) tower systems. solarpilot was developed by the National Renewable Energy Laboratory (NREL...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Technical Briefs
J. Sol. Energy Eng. April 2022, 144(2): 024503.
Paper No: SOL-21-1266
Published Online: January 27, 2022
... : I ncluding W ind E nergy and B uilding E nergy C onservation . 31 07 2021 01 01 2022 02 01 2022 27 01 2022 azimuth-elevation graphical ray tracing heliostat spinning-elevation tracking angle optics solar receiver solar tower Proper tracking...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Technical Briefs
J. Sol. Energy Eng. April 2022, 144(2): 024502.
Paper No: SOL-20-1355
Published Online: November 23, 2021
...Muhammad Uzair; Naveed ur Rehman; Muhammad Asif This study developed a methodology for determining the intercept factor (γ) and reports the effects of varying the design parameters, within realistic ranges, on the optical performance of parabolic trough collectors (PTC). The design equations...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. February 2022, 144(1): 011006.
Paper No: SOL-20-1525
Published Online: August 23, 2021
... and radii of facets are constrained so that the ray refracted from the bottom vertex of each facet on one side of the optical axis and the ray refracted from the outer vertex of the corresponding facet on the other side of the optical axis must intersect at the focal plane. The proposed lens design has...
Journal Articles
Dawei Liang, Joana Almeida, Bruno D. Tibúrcio, Miguel Catela, Dário Garcia, Hugo Costa, Cláudia R. Vistas
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. December 2021, 143(6): 061004.
Paper No: SOL-20-1516
Published Online: June 1, 2021
...-Pumped Solid State Laser Program ,” 10th Meeting on Optical Engineering in Israel , Jerusalem, Israel , Sept. 22 , I. Shladov , and S. R. Rotman , eds., SPIE , pp. 196 – 201 . [2] Hemmati , H. , Biswas , A. , and Djordjevic , I. B. , 2011 , “ Deep-Space Optical...
Journal Articles
Journal:
Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. December 2021, 143(6): 061001.
Paper No: SOL-20-1320
Published Online: April 23, 2021
... ins by d t a w l = d t a i n + 2 t t a w l , d t a e x = d t a w l + 2 t i n s The optical efficiency of the PTC is defined as the ratio of the power absorbed by the evaporator to the solar power impinging on the aperture area...
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