Results 31 to 40 of about 24,229 (264)

3D Solar Irradiance Model for Non-Uniform Shading Environments Using Shading (Aperture) Matrix Enhanced by Local Coordinate System

Energies, 2023
Building-integrated photovoltaics (BIPVs) and vehicle-integrated photovoltaics (VIPVs) receive solar irradiance through non-uniform shading objects. Standard scalar calculations cannot accurately determine the solar irradiance of BIPV and VIPV systems ...
Kenji Araki, Yasuyuki Ota, Akira Nagaoka, Kensuke Nishioka   +3 more
doaj   +1 more source

Solar Irradiance Variability: Comparisons of Models and Measurements

Earth and Space Science, 2019
The Earth system responds to solar variability on a wide range of timescales. Knowledge of total solar irradiance (TSI) and solar spectral irradiance (SSI) spanning minutes to centuries is needed by scientists studying a broad array of research ...
O. Coddington, J. Lean, P. Pilewskie, M. Snow, E. Richard, G. Kopp, C. Lindholm, M. DeLand, S. Marchenko, M. Haberreiter, T. Baranyi   +10 more
doaj   +1 more source

Assessments of Solar, Thermal and Net Irradiance from Simple Solar Geometry and Routine Meteorological Measurements in the Pannonian Basin

Atmosphere, 2021
In this paper, we discussed several different procedures for calculating irradiation from routine weather measurements and observations. There are between four and eight frequently used parameterizations of radiation balance components in meteorological ...
Zlatica Popov, Zoltán Nagy, Györgyi Baranka, Tamás Weidinger   +3 more
doaj   +1 more source

Impact of solar radiation variation on the optimal tilted angle for fixed grid-connected PV array—case study in Beijing

Global Energy Interconnection, 2018
A key design parameter for fixed grid-connected photovoltaic (PV) arrays, the optimal tilt angle, does not only depend on the geographic location but is also directly affected by atmospheric conditions.
Yanbo Shen, Jun Zhang, Peng Guo, Xinwen Wang   +3 more
doaj   +1 more source

Computation of irradiance in a solar still by using a refined algorithm

, 2013
A refined solar algorithm from the ESP-r system has been used to calculate the distribution of solar irradiation inside a basin-type solar still. In the approach, surface finish, view factors and multiple reflections are taken into consideration in the ...
Clarke, Joseph Andrew, Madhlopa, Amos
core   +1 more source

Reconstructing solar irradiance from historical Ca II K observations [PDF]

, 2021
Context. Knowledge of solar irradiance variability is critical to Earth’s climate models and understanding the solar influence on Earth’s climate. Direct solar irradiance measurements have only been available since 1978.
Chatzistergos, T., Yeo, Kok Leng, Kopp, Greg, Malherbe, J., Solanki, S., Mandal, S., Jean-Marie Malherbe, Ilaria Ermolli, Chatzistergos, Theodosios, Theodosios Chatzistergos, Yeo, K., Mandal, Sudip, Krivova, N., Natalie A. Krivova, Ermolli, I., Sudip Mandal, Kopp, G., Greg Kopp, Ermolli, Ilaria, Solanki, Sami K., Kok Leng Yeo, Sami K. Solanki, Malherbe, Jean-Marie, Krivova, Natalie A.   +23 more
core   +1 more source

Short-Term Solar Power Predicting Model Based on Multi-Step CNN Stacked LSTM Technique

Energies, 2022
Variability in solar irradiance has an impact on the stability of solar systems and the grid’s safety. With the decreasing cost of solar panels and recent advancements in energy conversion technology, precise solar energy forecasting is critical for ...
Neethu Elizabeth Michael, Manohar Mishra, Shazia Hasan, Ahmed Al-Durra   +3 more
doaj   +1 more source

Case study of the mesospheric and lower thermospheric effects of solar x-ray flares: Coupled ion-neutral modelling and comparison with EISCAT and riometer measurements [PDF]

, 2008
Two case studies of upper mesospheric and lower thermospheric (UMLT) high-latitude effects of solar X-ray flares are presented. Sodankylä Ion-neutral Chemistry Model (SIC) electron density profiles agree with D-region EISCAT and riometer ...
Beharrell, M.J., A. Seppälä, Verronen, P.T., Seppälä, A., Ulich, T., C.-F. Enell, Enell, C.-F., Honary, F., P. T. Verronen, J. P. Vierinen, T. Ulich, A. Kero, E. Turunen, M. J. Beharrell, Vierinen, J.P., Turunen, E., F. Honary, Kero, A.   +17 more
core   +1 more source

Determination of sensor depth from downwelling irradiance measurements

, 2012
The wave focusing effect causes measurements of under water downwelling irradiances Ed to be extremely variable in intensity and spectral shape. A new analytical model for Ed has been developed recently, which can deal with the induced variability by ...
Grötsch, Philipp, Gege, Peter, Philipp Groetsch, Peter Gege   +3 more
core   +1 more source

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

Advanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk, Yihao Yuan, Augustin Caillas, Amel Saidoun, Roméo Bonnet, Pascal Filloux, Emmanuel Lhuillier, Aloyse Degiron   +7 more
wiley   +1 more source