Results 21 to 30 of about 1,095 (200)
Energies, 2023 Energy nowcasting is a valuable asset in managing energy loads and having real-time information on solar irradiation availability. In this study, we evaluate the spectrally integrated outputs of the SENSE system for solar irradiance nowcasting for the ...
Ioannis-Panagiotis Raptis +9 more
doaj +1 more source
Application of small angle approximation in circumsolar irradiance modelling
Solar Energy Advances, 2021 Circumsolar irradiance is the part of diffuse or scattered irradiance within a small angle (2.5° for typical pyrheliometers) around the sun which is measured, together with direct normal irradiance, by pyrheliometers and reported as part of the direct ...
Yi Qin +4 more
doaj +1 more source
Buildings, 2021 Solar radiation provides the most significant natural energy in buildings for space heating and daylighting. Due to atmospheric interference, solar radiation received at the Earth’s surface consists of direct beam and diffuse radiation, where diffuse can
Ochuko Kelvin Overen +2 more
doaj +1 more source
National Renewable Energy Laboratory Pyrheliometer Comparisons: 24 September - 5 October 2012 (NPC-2012) [PDF]
, 2013 The NREL Pyrheliometer Comparisons for 2012 (NPC-2012) were held at the Solar Radiation Research Laboratory in Golden, Colorado, from September 24 through October 5 for the purpose of transferring the World Radiometric Reference (WRR) to participating ...
T. Stoffel, I. Reda
semanticscholar +2 more sources
IMPROVED WATER-FLOW PYRHELIOMETER
Monthly Weather Review, 1927 W. M. Shulgin
openaire +2 more sources
Blind photovoltaic modeling intercomparison: A multidimensional data analysis and lessons learned
Progress in Photovoltaics: Research and Applications, Volume 31, Issue 11, Page 1144-1157, November 2023., 2023 In this blind photovoltaic modeling intercomparison, most software and models exhibited similar results indicating good reproducibility among participants, especially when compared with the 2010 PVPMC intercomparison. For example, the spread in estimated annual energy yield among PVsyst participants is now ~6% compared with ~33% in 2010.
Marios Theristis +31 more
wiley +1 more source
Progress in Photovoltaics: Research and Applications, Volume 31, Issue 6, Page 591-597, June 2023., 2023 A simple method to calculate the aerosol content in the atmosphere and the prevailing spectral irradiance of the sunlight is introduced. A weather station and a pyrheliometer are sufficient for the determination of the prevailing spectral irradiance using this method.
Marc Steiner +4 more
wiley +1 more source
Progress in Photovoltaics: Research and Applications, Volume 31, Issue 5, Page 506-523, May 2023., 2023 In this study, a new algorithmic tool is introduced that creates a reference data set through the combination of data sets of the unshaded PV systems in the surrounding area. It subsequently compares the created reference data set with the one of the PV systems of interest, detects any energy loss and clusters the distinctive loss due to shadow ...
Odysseas Tsafarakis +1 more
wiley +1 more source
Spectral influence analysis on sunshine duration measurement
The Journal of Engineering, 2019 Sunshine duration is an important variable in surface meteorological measurement. In this article, two methods for measuring sunshine duration are described, one is photovoltaic-based instrument, which ranges from 400 to 1100 nm, and the other is ...
Wei Chong +5 more
doaj +1 more source
COVID‐19 Pandemic Reveals Distinct Impact of Aerosols on Surface Solar Radiation in China
Geophysical Research Letters, Volume 50, Issue 5, 16 March 2023., 2023 Abstract With the abrupt and significant drop of PM2.5 concentrations during the lockdown in 2020, hourly direct radiation (Rdir) at surface substantially increased in East China, such as Zhengzhou, Wuhan and Baoshan, with the maximum enhancement of 86% at Wuhan. Most of these stations had decreased diffuse radiation (Rdif) except Zhengzhou.
Xin Yang +5 more
wiley +1 more source