Results 41 to 50 of about 123 (115)

Photoluminescence Degradation in Metal Halide Perovskites: Is In‐Situ Study with Concentrated Sunlight Possible?

Solar RRL, Volume 9, Issue 9, May 2025.
This study reports on the design and experimental validation of a new setup for the in situ study of PL degradation in metal halide perovskites using concentrated natural sunlight in a wide range of solar concentrations and sample temperatures.
Rafael Fleischman, Max Grischek, Jiahuan Zhang, Florian Scheler, Georgios E. Arnaoutakis, Mark Khenkin, Carolin Ulbrich, Steve Albrecht, Eugene A. Katz   +8 more
wiley   +1 more source

A Dormant Giant: Renewable Energy in the Soviet Union and Russia (1970s–Present)

The Russian Review, Volume 84, Issue 2, Page 267-282, April 2025.
Abstract In spring 1981 the Central Committee of the Soviet Communist Party officially sanctioned the start of an “alternative” renewable energy development program in the Soviet Union. Throughout the following decade, some two hundred organizations in the USSR were involved in research and development activities and installing test facilities for ...
Benjamin Beuerle
wiley   +1 more source

Joint Effects of Pitch Angle and Azimuth Angles on the Aerodynamic Probability Characteristics of Heliostat

SolarPACES Conference Proceedings
Heliostats are frequently exposed to wind loads during operation, and specific pitch–azimuth angle combinations can critically affect structural stability, tracking accuracy, and power generation efficiency.
Wen Zhang, Guohua Xing, José F. Gallego, Pengyong Miao, Haojun Xia, Junjie Tao, Zhaowen Wang   +6 more
doaj   +1 more source

Control Algorithms and Hardware for a Concentrating Solar Plant Based on Fluidized Bed With Improved Heliostat Calibration System

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
The present paper deals on a concentrating solar system with thermal energy storage, recognized as a potentially useful technology to be integrated in power systems and industries, to support their decarbonization. The paper focuses on the control system of the solar field, employing two‐axis (pitch‐roll) tracking mirrors (heliostats) and a beam‐down ...
Antonio Scafuri, Matteo Scanzano, Antonio De Caro, Lorenzo Romagnoli, Fulvio Bassetti, Letizia Magaldi, Maria Carmen Falvo, Chaofan Sun   +7 more
wiley   +1 more source

Computer Modelling of Heliostat Fields by Ray-Tracing Techniques: Simulating the Mechanical Rotations

Applied Sciences
In this work, solar concentrating heliostat fields are modeled using accurate solar-tracking algorithms and a wide range of rotation models to investigate the parameters controlling the mechanical efficiency of these solar facilities.
José Carlos Garcia Pereira, Luís Guerra Rosa   +1 more
doaj   +1 more source

Advanced exergy analysis and performance enhancement of air‐cooled solar recompression supercritical carbon dioxide systems

IET Renewable Power Generation, Volume 18, Issue S1, Page 4497-4518, 18 December 2024.
• Air‐cooled solar recompression supercritical CO2 systems are investigated. • Advanced exergy analysis is performed to identify optimization strategies. • Improvement focuses on PC and MC; two enhancement systems are proposed. • The optimal configuration includes an intercooler and a second compressor.
Amin Atarzadeh, Mehran Ameri, Ebrahim Jahanshahi Javaran   +2 more
wiley   +1 more source

Materials Advances in Photocatalytic Solar Hydrogen Production: Integrating Systems and Economics for a Sustainable Future

Advanced Materials, Volume 36, Issue 42, October 17, 2024.
Photocatalytic solar hydrogen generation, including both overall water splitting and organic reforming, presents a promising route for green hydrogen production. To advance the commercialization of this technology, this review offers an integrated, multidisciplinary perspective on photocatalyst and system designs aimed at enhancing solar‐to‐hydrogen ...
Denny Gunawan, Jiajun Zhang, Qiyuan Li, Cui Ying Toe, Jason Scott, Markus Antonietti, Jinghua Guo, Rose Amal   +7 more
wiley   +1 more source

In Situ Enhancement of Heliostat Calibration Using Differentiable Ray Tracing and Artificial Intelligence

SolarPACES Conference Proceedings
The camera target method is the most commonly used calibration method for heliostats at solar tower power plants to minimize their sun tracking errors.
Max Pargmann, Jan Ebert, Stefan Kesselheim, Daniel Maldonado Quinto, Robert Pitz-Paal   +4 more
doaj   +1 more source

Measured and Modeled Trends of Seven Tropospheric Pollutants in the High Arctic From 1999 to 2022

Journal of Geophysical Research: Atmospheres, Volume 129, Issue 12, 28 June 2024.
Abstract The long‐term trends and seasonality of many tropospheric pollutants are not well characterized in the high Arctic due to a dearth of trace‐gas measurements in this remote region. In this study, the inter‐ and intra‐annual variabilities of carbon monoxide (CO), acetylene (C2H2), ethane (C2H6), methanol (CH3OH), formaldehyde (H2CO), formic acid
T. Wizenberg, K. Strong, D. B. A. Jones, J. W. Hannigan, I. Ortega, E. Mahieu   +5 more
wiley   +1 more source

Interfacial Solar Evaporation: From Fundamental Research to Applications

Advanced Materials, Volume 36, Issue 23, June 6, 2024.
This article comprehensively reviews the development of interfacial solar evaporation technologies, covering the design and fabrication of high‐performance photothermal materials and solar evaporators, the energy nexus of 2D and 3D evaporation systems, and the corresponding energy management strategies, and the explored applications to solve practical ...
Xuan Wu, Yi Lu, Xiaohu Ren, Pan Wu, Dewei Chu, Xiaofei Yang, Haolan Xu   +6 more
wiley   +1 more source