Results 21 to 30 of about 54,661 (255)

Development of solar cell for large area position detection: proof of concept

open access: yesHeliyon, 2021
Detecting and analyzing a moving body position are helpful in many fields, such as medicine, sports performance, virtual reality and many more. Therefore, researchers try to develop a tool or a system that helps to detect the motion and tracking its ...
Heba Abdelmoneim   +2 more
doaj   +1 more source

Sun Tracking Systems: A Review

open access: yesSensors, 2009
The output power produced by high-concentration solar thermal and photovoltaic systems is directly related to the amount of solar energy acquired by the system, and it is therefore necessary to track the sun’s position with a high degree of accuracy ...
Chiu-Feng Lin   +3 more
doaj   +1 more source

Two-Dimensional Space Turntable Pitch Axis Trajectory Prediction Method Based on Sun Vector and CNN-LSTM Model

open access: yesApplied Sciences, 2023
A two-dimensional space turntable system has been used to ensure that the Solar X-ray and Extreme Ultraviolet Imager (X-EUVI) can track the Sun stably, and the prediction of the two-dimensional turntable trajectory is an important part of payload health ...
Shuang Dai   +3 more
doaj   +1 more source

Physicochemical quality of twin layer solar tunnel dried tomato slices

open access: yesHeliyon, 2021
The objective of this experimental study was to evaluate the effect of twin layer solar tunnel drying on physicochemical quality of tomato slices. The novelty of this dryer is that it has two layers of trays unlike Hohenheim solar tunnel dryer which ...
Lelise Tilahun Dufera   +3 more
doaj   +1 more source

Design of a deployment rotation mechanism for microsatellite [PDF]

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization, 2009
Solar array rotation mechanism provides a hinged joint between the solar panel and satellite body, smooth rotation of the solar array into deployed position and its fixation in this position.
Abdelal G. F., Bakr Elhady A., Kassab M.
doaj   +1 more source

Effect of the Azimuth Axis Tilt Error on the Tracking Performance of a Solar Dish Concentrator System

open access: yesEnergies, 2022
A solar dish concentrator system has a large windward area and heavy structural mass, and under the action of wind loads and self-weight loads, foundation settlement can easily occur and cause the column (the azimuth axis) to tilt.
Yongxiang Liu, Youduo Peng, Jian Yan
doaj   +1 more source

Solar Position Algorithm for Solar Radiation Applications (Revised) [PDF]

open access: yes, 2008
This report is a step-by-step procedure for implementing an algorithm to calculate the solar zenith and azimuth angles in the period from the year -2000 to 6000, with uncertainties of ?0.0003/. It is written in a step-by-step format to simplify otherwise complicated steps, with a focus on the sun instead of the planets and stars in general.
Reda, I., Andreas, A.
openaire   +2 more sources

Extreme Solar Events’ Impact on GPS Positioning Results [PDF]

open access: yesRemote Sensing, 2021
The main objective of the present study is to perform an analysis of the space weather impact on the Latvian CORS (Continuously Operating GNSS (Global Navigation Satellite System) Stations) GPS (Global Positioning System) observations, in situations of geomagnetic storms, sun flares and extreme TEC (Total Electron Content) and ROTI (Rate of change of ...
Janis Balodis   +2 more
openaire   +2 more sources

Towards the Development of a Low-Cost Irradiance Nowcasting Sky Imager

open access: yesApplied Sciences, 2019
Solar resource assessment is fundamental to reduce the risk in selecting the solar power-plants’ location; also for designing the appropriate solar-energy conversion technology and operating new sources of solar-power generation.
Luis Valentín   +5 more
doaj   +1 more source

Solar Position Measurement System Utilizing Solar Cell Array [PDF]

open access: yesThe Open Construction and Building Technology Journal, 2009
This paper presents a novel approach for estimating the position of the sun by measuring the output voltage signals of two solar cell arrays orientated orthogonally to one another. Each array comprises a symmetrical arrangement of six cells inclined at angles of either 15, 45 or 75 to the horizontal, respectively. As the position of the sun varies over
Chia-Yen John Lee   +4 more
openaire   +1 more source

Home - About - Disclaimer - Privacy