A Heliostat for Measuring the Solar Flux Spectrum

1972 ◽  
Vol 84 ◽  
pp. 721 ◽  
Author(s):  
David F. Gray
Keyword(s):  
Solar Flux ◽  
Flux Spectrum

A critical list of Voigt-fitted equivalent width measurements based on the solar flux spectrum

1993 ◽  
Vol 85 ◽  
pp. 163 ◽  
Author(s):  
Thomas Meylan ◽  
Ingemar Furenlid ◽  
Michael S. Wiggs ◽  
R. L. Kurucz
Keyword(s):  
Equivalent Width ◽  
Solar Flux ◽  
Critical List ◽  
Flux Spectrum ◽  
Width Measurements

Modeling and simulation of 1MWe solar tower plant’s solar flux distribution on the central cavity receiver

2012 ◽  
Vol 29 ◽  
pp. 123-136 ◽  
Author(s):  
Qiang Yu ◽  
Zhifeng Wang ◽  
Ershu Xu ◽  
Hongli Zhang ◽  
Zhenwu Lu ◽  
...  
Keyword(s):  
Modeling And Simulation ◽  
Flux Distribution ◽  
Solar Flux ◽  
Central Cavity

Absolute solar flux measurement shortward of 575 Å

1986 ◽  
Vol 91 (A6) ◽  
pp. 7089 ◽  
Author(s):  
H. S. Ogawa ◽  
D. L. Judge
Keyword(s):  
Flux Measurement ◽  
Solar Flux

Climate Conditions at Perennially Ice-Covered Lake Untersee, East Antarctica

2015 ◽  
Vol 54 (7) ◽  
pp. 1393-1412 ◽  
Author(s):  
Dale T. Andersen ◽  
Christopher P. McKay ◽  
Victor Lagun
Keyword(s):  
Wind Speed ◽  
Austral Summer ◽  
Solar Flux ◽  
East Antarctica ◽  
Daily Maximum ◽  
Mean Annual Temperature ◽  
Secondary Source ◽  
Climate Conditions ◽  
Wind Speeds ◽  
Strong Winds

AbstractIn November 2008 an automated meteorological station was established at Lake Untersee in East Antarctica, producing a 5-yr data record of meteorological conditions at the lake. This dataset includes five austral summer seasons composed of December, January, and February (DJF). The average solar flux at Lake Untersee for the four years with complete solar flux data is 99.2 ± 0.6 W m−2. The mean annual temperature at Lake Untersee was determined to be −10.6° ± 0.6°C. The annual degree-days above freezing for the five years were 9.7, 37.7, 22.4, 7.0, and 48.8, respectively, with summer (DJF) accounting for virtually all of this. For these five summers the average DJF temperatures were −3.5°, −1.9°, −2.2°, −2.6°, and −2.5°C. The maximum (minimum) temperatures were +5.3°, +7.6°, +5.7°, +4.4°, and +9.0°C (−13.8°, −12.8°, −12.9°, −13.5°, and −12.1°C). The average of the wind speed recorded was 5.4 m s−1, the maximum was 35.7 m s−1, and the average daily maximum was 15 m s−1. The wind speed was higher in the winter, averaging 6.4 m s−1. Summer winds averaged 4.7 m s−1. The dominant wind direction for strong winds is from the south for all seasons, with a secondary source of strong winds in the summer from the east-northeast. Relative humidity averages 37%; however, high values will occur with an average period of ~10 days, providing a strong indicator of the quasi-periodic passage of storms across the site. Low summer temperatures and high wind speeds create conditions at the surface of the lake ice resulting in sublimation rather than melting as the main mass-loss process.

Performance Enhancement of Solar Parabolic Trough Collector Using Intensified Ray Convergence System

2017 ◽  
Vol 867 ◽  
pp. 191-194
Author(s):  
Anbu Manimaran Sukanta ◽  
M. Niranjan Sakthivel ◽  
Gopalsamy Manoranjith ◽  
Loganathan Naveen Kumar
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Performance Enhancement ◽  
Solar Flux ◽  
Parabolic Trough ◽  
Parabolic Trough Collector ◽  
Chrome Coating ◽  
Convergence System ◽  
And Performance

Solar Energy is one of the forms of Renewable Energy that is available abundantly. This work is executed on the enhancement of the performance of solar parabolic trough collector using Intensified Ray Convergence System (IRCS). This paper distinguishes between the performance of solar parabolic trough collector with continuous dual axis tracking and a fixed solar parabolic trough collector (PTC) facing south (single axis tracking). The simulation and performance of the solar radiations are visualized and analyzed using TRACEPRO 6.0.2 software. The improvement in absorption of solar flux was found to be enhanced by 39.06% in PTC using dual axis tracking, absorption of solar flux increases by 52% to 200% in PTC receiver using perfect mirror than PTC using black chrome coating.

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