SHARING THE SUN! Solar Technology in the Seventies A Joint Conference 1976 of the American Section of the International Solar Energy Society and the Solar Energy Society of Canada Inc. August 15th-2Oth, 1976 Winnipeg, Manitoba, Canada

1976 ◽  
Vol 24 (1) ◽  
pp. 93-94 ◽  
Keyword(s):  
Solar Energy ◽  
The Sun ◽  
Joint Conference ◽  
August 15Th ◽  
Solar Technology

scholarly journals Applied Solar Energy and Introduction to Solar Technology and Solar Heating Systems: Analysis and Design with the Sun-Pulse Method

1982 ◽  
Vol 104 (3) ◽  
pp. 274-274
Author(s):  
David Kut ◽  
Gerald Hare ◽  
Marian Jacobs Fisk ◽  
H. C. William Anderson ◽  
Gordon F. Tully ◽  
...  
Keyword(s):  
Solar Energy ◽  
Systems Analysis ◽  
Pulse Method ◽  
Solar Heating ◽  
The Sun ◽  
Heating Systems ◽  
Analysis And Design ◽  
Systems Analysis And Design ◽  
Solar Technology

scholarly journals A Survay on Photovoltaics Technology for Water Pumping

2021 ◽  
pp. 86-96
Author(s):  
Matt Bowden
Keyword(s):  
Solar Energy ◽  
Critical Evaluation ◽  
Present Condition ◽  
The Sun ◽  
Economic Aspects ◽  
Maximum Power Point ◽  
Solar Photovoltaics ◽  
Water Pumping ◽  
Useful Power ◽  
Power Point

Due to the evident shortfalls in the high costs of diesel and current, the requirements of pumping for agricultural and aqua supply have been affected. In that regard, utilizing solar energy to pump aqua is a potential technology for diesel-driven and conventional propelling structures. Propelling aqua using solar energy is done using photovoltaics techniques that transform energy from the sun into useful power meant to operate AC or DC engine-driven hydraulic ram. This research contribution provides a critical evaluation of the solar propelling technology e.g. Maximum Power-Point Trackers (MPPTs) and is based on economic viabilities of solar photovoltaics techniques and schemes, execution evaluation, photovoltaics generator degradation, and optimum sizing that distributes power to the electropumps. This analysis also relates to environmental and economic aspects, advanced Photovoltaics materials, and potential enhancements. Updates regarding the present condition and usage of solar H2O propelling technologies have also been focusing in this analysis.

scholarly journals Analisis Kemampuan Panel Surya Monokristalin 150 Watt pada Arus dan Pengisian yang Dihasilkan

2019 ◽  
Vol 3 (1) ◽  
pp. 29-35
Author(s):  
M Barkah Salim ◽  
Nurlaila Rajabiah
Keyword(s):  
Data Collection ◽  
Solar Energy ◽  
Research Method ◽  
Electrical Energy ◽  
The Sun ◽  
Solar Panels ◽  
Open Area ◽  
A Priority ◽  
The Many

The sun is a source of energy that cannot be used up. Therefore, the utilization of solar energy must be a priority. With the many types of solar panels that have been developed, researchers conducted an analysis of 150 watt monocrystalline solar panels. The purpose of this study is to know the amount of current and voltage produced by solar panels in some conditions of the sky, namely cloudy, bright cloudy, and bright. The research method used was the experiment. From the data that has been obtained, it can be found that the energy produced by solar panels during cloudy ranges from 0.6-0.8 amperes, when it is cloudy, 0.9-1.9 amperes, and when bright 2.0-3.2 amperes. The amount of electrical energy that can be produced is 8%. However, if the sunny state can produce twice that Suggestions for readers are if you want to take data to make sure the solar panels are completely exposed to the sun during data collection and in the open area. Much better if the angle is adjusted in the direction of sunlight.

scholarly journals Experimental Investigation on the Feasibility of Using a Fresnel Lens as a Solar-Energy Collection System for Enhancing On-Orbit Power Generation Performance

2017 ◽  
Vol 2017 ◽  
pp. 1-13
Author(s):  
Tae-Yong Park ◽  
Joo-Yong Jung ◽  
Hyun-Ung Oh
Keyword(s):  
Power Generation ◽  
Solar Energy ◽  
Attitude Control ◽  
Incidence Angle ◽  
Fresnel Lens ◽  
Power Measurement ◽  
The Sun ◽  
Solar Panels ◽  
Collection System ◽  
Power Generation Performance

Cube satellites have a limitation for generating power because of their cubic structure and extremely small size. In addition, the incidence angle between the sun and the solar panels continuously varies owing to the revolution and rotation of the satellite according to the attitude control strategy. This angle is an important parameter for determining the power generation performance of the cube satellite. In this study, we performed an experimental feasibility study that uses a Fresnel lens as a solar-energy collection system for cube satellite applications, so that the power generation efficiency can be enhanced under the worst incidence angle condition between the sun and solar panels by concentrating and redirecting solar energy onto the solar panels with a commercial Fresnel lens. To verify the effectiveness of the proposed system, we conducted a power-measurement test using a solar simulator and Fresnel lenses at various angles to the light source. In addition, we predicted the on-orbit power-generation enhancement achieved by employing the solar-energy collection system with various attitude control strategies.

Research on Mode of Solar Automatic Tracker

2013 ◽  
Vol 724-725 ◽  
pp. 78-83
Author(s):  
Zhong Ying Yuan
Keyword(s):  
Sustainable Development ◽  
Solar Energy ◽  
Trajectory Tracking ◽  
Utilization Rate ◽  
The Sun ◽  
Automatic Tracking ◽  
Tracking Mode ◽  
The World ◽  
New Type ◽  
Solar Tracker

Solar energy, as a new type of energy for sustainable development without pollution, has caught much attention all over the world. Adequately improving the utilization rate of solar illumination is taken as the only means of using solar energy in maximum. This paper introduces two different tracking modes of the solar tracker which can switch automatically: Sensor tracking mode and the sun trajectory tracking mode. These two modes can self-switch and cooperate with each other to achieve high precision of all time automatic tracking.

Thermal Physics of Cometary Nuclei

2020 ◽  
Author(s):  
Dina Prialnik
Keyword(s):  
Solar Energy ◽  
Thermal Emission ◽  
Thermal Evolution ◽  
Internal Heat ◽  
Thermal Inertia ◽  
Skin Depth ◽  
Physical Models ◽  
The Sun ◽  
Cometary Nuclei ◽  
Water Ice

Cometary nuclei, as small, spinning, ice-rich objects revolving around the sun in eccentric orbits, are powered and activated by solar radiation. Far from the sun, most of the solar energy is reradiated as thermal emission, whereas close to the sun, it is absorbed by sublimation of ice. Only a small fraction of the solar energy is conducted into the nucleus interior. The rate of heat conduction determines how deep and how fast this energy is dissipated. The conductivity of cometary nuclei, which depends on their composition and porosity, is estimated based on vastly different models ranging from very simple to extremely complex. The characteristic response to heating is determined by the skin depth, the thermal inertia, and the thermal diffusion timescale, which depend on the comet’s structure and dynamics. Internal heat sources include the temperature-dependent crystallization of amorphous water ice, which becomes important at temperatures above about 130 K; occurs in spurts; and releases volatiles trapped in the ice. These, in turn, contribute to heat transfer by advection and by phase transitions. Radiogenic heating resulting from the decay of short-lived unstable nuclei such as 26Al heats the nucleus shortly after formation and may lead to compositional alterations. The thermal evolution of the nucleus is described by thermo-physical models that solve mass and energy conservation equations in various geometries, sometimes very complicated, taking into account self-heating. Solutions are compared with actual measurements from spacecraft, mainly during the Rosetta mission, to deduce the thermal properties of the nucleus and decipher its activity pattern.

Evaluation of the Prospects of Using Solar Thermal Air-Conditioning Systems in Saudi Arabia

2014 ◽  
Vol 554 ◽  
pp. 271-275 ◽  
Author(s):  
Islam Mazharul ◽  
Ruhul Amin Muhammad ◽  
Farid Nasir Ani
Keyword(s):  
Saudi Arabia ◽  
Solar Energy ◽  
Air Conditioning ◽  
Renewable Energy Sources ◽  
Solar Thermal ◽  
Solar Irradiation ◽  
The Sun ◽  
Space Cooling ◽  
Power Capability ◽  
Air Conditioning Systems

Saudi Arabia is endowed with abundant solar energy which is readily available from the sun. Solar energy is one of main renewable energy sources and it can be harnessed for an array of applications including heating, cooling and generation of electricity. Due to its hot climate and relatively high purchasing power capability of the general population, Saudi Arabia has a huge demand for air-conditioning (cooling) appliances. Currently these appliances are mainly powered by electricity generated by conventional sources using fossil fuels. Solar air-conditioning system is an emerging technology which relies on the sun for meeting the energy demand. One attractive feature of this system is that the high demand for space cooling by air-conditioning equipment coincides with the abundant availability of solar irradiation during the long summer months. Currently there are several types of solar air-conditioning systems, including the absorption, adsorption and desiccant systems. Each system has its merits and demerits. In this paper, the prospects of using absorption solar thermal air-conditioning systems for space cooling in Saudi Arabia are given.

Optimal Utilization of Solar Arrays: Design and Implimentation of a Motorised Solar Energy Photovoltaic Array System

2009 ◽  
Vol 62-64 ◽  
pp. 533-536 ◽  
Author(s):  
E.U. Ubeku ◽  
S.O. Igbinovia
Keyword(s):  
Solar Cell ◽  
Solar Energy ◽  
Solar Panel ◽  
Stepper Motor ◽  
The Sun ◽  
Photovoltaic Array ◽  
Solar Arrays ◽  
Collector System ◽  
System A

In this paper a motorized solar energy collector system-a driver system that positioned the solar cell panel differently during day-time was design and implemented. The aim is to optimize the amount of solar energy that can be trapped from the sun using a solar cell panel. This is achieved by using a stepper motor, controlled by Atmel AT89C52 microcontroller, to align the panel such that all incident rays strike normal to the panel’s surface thereby maximizing the amount of solar energy that can be trapped from the sun. The alignment is time dependant. This model was implemented and tested and the results proved to be successful in maximizing the energy received from the sun than if the solar panel was fixed at a particular position.

scholarly journals Solar energy: Power from the sun

Nature ◽  
1976 ◽  
Vol 260 (5551) ◽  
pp. 477-477 ◽  
Author(s):  
Pierre Langereux
Keyword(s):  
Solar Energy ◽  
The Sun
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