scholarly journals Efficiency of solar radiation conversion in photovoltaic panels

2018 ◽  
Vol 10 ◽  
pp. 02014 ◽  
Author(s):  
Sławomir Kurpaska ◽  
Jarosław Knaga ◽  
Hubert Latała ◽  
Jakub Sikora ◽  
Wiesław Tomczyk
Keyword(s):  
Solar Radiation ◽  
Ambient Temperature ◽  
Conversion Efficiency ◽  
Radiation Intensity ◽  
Radiation Energy ◽  
Climatic Conditions ◽  
Ambient Conditions ◽  
Photovoltaic Panels ◽  
Solar Radiation Intensity ◽  
Radiation Conversion

This paper included analysis the conversion efficiency in photovoltaic panels. The tests were done between February and June at a test stand equipped with three commonly used types of photovoltaic panels: poly- and monocrystalline silicon and with semi-conductive layer made of copper (Cu), indium (In), gallium (Ga) and selenium (Se) (CIGS). Five days of each month were selected for a detailed analysis. They were close to the so-called recommended day for calculations in solar power engineering. Efficiency, calculated as the yield of electrical energy in relation to solar radiation energy reaching the panels was made conditional upon solar radiation intensity and ambient temperature. It was found that as solar radiation intensity and ambient temperature increase, the efficiency of solar radiation conversion into electricity is reduced. Correlation dependence was determined for the test data obtained, describing temperature change of panels depending on climatic conditions. It was found that as panel temperature increases, the conversion efficiency is reduced. Within the tested scope of experiment conditions, the efficiency was reduced in the range between 20.1 and 22.8%. The authors also determined the average efficiency values in individual test months together with average ambient conditions of the environment where the process of solar radiation conversion took place.

scholarly journals Determination of physical characteristics of horizontally positioned solar module in real climate conditions in Nis, Serbia

2016 ◽  
Vol 14 (1) ◽  
pp. 37-51 ◽  
Author(s):  
Lana Pantic ◽  
Tomislav Pavlovic
Keyword(s):  
Solar Radiation ◽  
Ambient Temperature ◽  
Output Power ◽  
Radiation Intensity ◽  
Negative Impact ◽  
Open Circuit ◽  
Physical Characteristics ◽  
Solar Module ◽  
Climate Conditions ◽  
Solar Radiation Intensity

The aim of this paper was to investigate the influence of solar radiation intensity, ambient temperature, wind speed and solar module temperature on the modules physical characteristics, in local climate conditions and for all seasons in Nis, Serbia. Twelve sunny days, for each month of the year, from the period September 2014 - June 2016 were selected. During each day meteorological parameters, solar module temperature and solar module output parameters were measured. The highest values of solar radiation intensity, ambient temperature and solar module temperature were measured in summer months, while the lowest values were in winter months. The maximal values of the output power were measured in summer months due to the high values of solar radiation intensity on the solar modules surface. A negative impact of high solar module temperature on the open circuit voltage, the output power, the fill factor and the efficiency was observed. In the winter months the local climatic conditions and air pollution have an adverse impact on the solar module efficiency and lead to a noticeable reduction of the efficiency.

scholarly journals Decaffeination process characteristic of Robusta coffee in single column reactor using ethyl acetate solvent

2009 ◽  
Vol 26 (3) ◽  
Author(s):  
Sukrisno Widyotomo ◽  
Sri Mulato ◽  
Hadi K. Purwadaria ◽  
A.M Syarief
Keyword(s):  
Energy Efficiency ◽  
Solar Radiation ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Radiation Intensity ◽  
Energy Conversion Efficiency ◽  
Solar Radiation Intensity ◽  
Solar Energy Conversion Efficiency ◽  
Shading Plant

AbstractThis experiment aims to know the solar energy efficiency of four clones of cocoa that cultivated under three different shading plants. This experiment has been done from September until December 2013 located at Kaliwining Experiment Farm with characteristic 45 m above sea level, soil type is low humic gley, soil texture is silty clay loam, and climate classification type D based on Scmidht and Fergusson Classification. This experiment used Nested Design as Experimental Design with species of shading plant as main plot which are Teak (Tectona grandis L.), Krete (Cassia surattensis (Burm.) F.), Lamtoro (Leucaena leucocephala L.) and Cocoa clones as sub plot which are Sulawesi 1, Sulawesi 2, KKM 22, KW 165. The observation of solar energy efficiency consists of daily solar radiation intensity, solar radiation intensity above plant, solar radiation intensity under plant, and also plant total dry weight. The experimental result showed that there is differences (heterogenity) between shading location based on homogenity test by Bartlett Method. There are some interaction between the kind of shading plant and clones in parameter of interception efficiency, absorbtion efficiency, the efficiency of solar energy that caught by plant, and solar energy conversion efficiency. The efficiency of solar energy that caught by plant will affect the solar energy conversion efficiency with R2 = 0,86.  Keywords : Solar Energy Efficiency, Cocoa Clones, Shading Plant, Nested Design, Bartlett Method

scholarly journals Analysis of Energy Reception Characteristics of Solar Aircraft in the Tropics of Cancer and Capricorn

2018 ◽  
Vol 198 ◽  
pp. 05011
Author(s):  
Kangwen Sun ◽  
Jiaqi Dong ◽  
Xiaobo Sun ◽  
Ziying Zhang ◽  
Mou Sun ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Radiation Intensity ◽  
Reference Value ◽  
Radiation Energy ◽  
Calculation Model ◽  
Total Solar Radiation ◽  
Near Space ◽  
Solar Radiation Intensity ◽  
Calculation Results ◽  
The Tropics

This paper mainly aims at the energy reception characteristics of solar aircraft flying in the near space between the Tropics of Cancer and Capricorn. Based on the solar radiation intensity calculation model, the energy reception characteristics including maximum solar radiation intensity, daytime average solar radiation intensity, total solar radiation energy received per day on the unit area., and daytime hours of solar aircraft was calculated varying with date, longitude, and latitude. By analyzing the corresponding calculation results, it can provide some reference value for the design of solar aircraft flying in this area.

scholarly journals Level of Coffee Consumption in Urban Community and Its Determinant Factors: Case Study in Jember District

2009 ◽  
Vol 25 (3) ◽  
Author(s):  
Endang Wiji Lestari ◽  
Idha Haryanto ◽  
Surip Mawardi
Keyword(s):  
Energy Efficiency ◽  
Solar Radiation ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Radiation Intensity ◽  
Energy Conversion Efficiency ◽  
Solar Radiation Intensity ◽  
Solar Energy Conversion Efficiency ◽  
Shading Plant

AbstractThis experiment aims to know the solar energy efficiency of four clones of cocoa that cultivated under three different shading plants. This experiment has been done from September until December 2013 located at Kaliwining Experiment Farm with characteristic 45 m above sea level, soil type is low humic gley, soil texture is silty clay loam, and climate classification type D based on Scmidht and Fergusson Classification. This experiment used Nested Design as Experimental Design with species of shading plant as main plot which are Teak (Tectona grandis L.), Krete (Cassia surattensis (Burm.) F.), Lamtoro (Leucaena leucocephala L.) and Cocoa clones as sub plot which are Sulawesi 1, Sulawesi 2, KKM 22, KW 165. The observation of solar energy efficiency consists of daily solar radiation intensity, solar radiation intensity above plant, solar radiation intensity under plant, and also plant total dry weight. The experimental result showed that there is differences (heterogenity) between shading location based on homogenity test by Bartlett Method. There are some interaction between the kind of shading plant and clones in parameter of interception efficiency, absorbtion efficiency, the efficiency of solar energy that caught by plant, and solar energy conversion efficiency. The efficiency of solar energy that caught by plant will affect the solar energy conversion efficiency with R2 = 0,86.  Keywords : Solar Energy Efficiency, Cocoa Clones, Shading Plant, Nested Design, Bartlett Method

scholarly journals Isolation of Indigenous Phytophthora palmivora from Indonesia, Their Morphological and Pathogenecity Characterization

2008 ◽  
Vol 24 (1) ◽  
Author(s):  
Rubiyo Rubiyo ◽  
Agus Purwantara ◽  
Sri Sukamto ◽  
Sudarsono Sudarsono
Keyword(s):  
Energy Efficiency ◽  
Solar Radiation ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Radiation Intensity ◽  
Energy Conversion Efficiency ◽  
Solar Radiation Intensity ◽  
Solar Energy Conversion Efficiency ◽  
Shading Plant

AbstractThis experiment aims to know the solar energy efficiency of four clones of cocoa that cultivated under three different shading plants. This experiment has been done from September until December 2013 located at Kaliwining Experiment Farm with characteristic 45 m above sea level, soil type is low humic gley, soil texture is silty clay loam, and climate classification type D based on Scmidht and Fergusson Classification. This experiment used Nested Design as Experimental Design with species of shading plant as main plot which are Teak (Tectona grandis L.), Krete (Cassia surattensis (Burm.) F.), Lamtoro (Leucaena leucocephala L.) and Cocoa clones as sub plot which are Sulawesi 1, Sulawesi 2, KKM 22, KW 165. The observation of solar energy efficiency consists of daily solar radiation intensity, solar radiation intensity above plant, solar radiation intensity under plant, and also plant total dry weight. The experimental result showed that there is differences (heterogenity) between shading location based on homogenity test by Bartlett Method. There are some interaction between the kind of shading plant and clones in parameter of interception efficiency, absorbtion efficiency, the efficiency of solar energy that caught by plant, and solar energy conversion efficiency. The efficiency of solar energy that caught by plant will affect the solar energy conversion efficiency with R2 = 0,86.  Keywords : Solar Energy Efficiency, Cocoa Clones, Shading Plant, Nested Design, Bartlett Method

scholarly journals Solar Energy Efficiency of Cocoa Clones which Cultivated under Three Species of Shade Trees

2015 ◽  
Vol 31 (1) ◽  
pp. 21-29
Author(s):  
Oscar Regazzoni ◽  
Yogi Sugito ◽  
Agus Suryanto ◽  
Adi Prawoto
Keyword(s):  
Energy Efficiency ◽  
Solar Radiation ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Radiation Intensity ◽  
Energy Conversion Efficiency ◽  
Solar Radiation Intensity ◽  
Solar Energy Conversion Efficiency ◽  
Shading Plant

AbstractThis experiment aims to know the solar energy efficiency of four clones of cocoa that cultivated under three different shading plants. This experiment has been done from September until December 2013 located at Kaliwining Experiment Farm with characteristic 45 m above sea level, soil type is low humic gley, soil texture is silty clay loam, and climate classification type D based on Scmidht and Fergusson Classification. This experiment used Nested Design as Experimental Design with species of shading plant as main plot which are Teak (Tectona grandis L.), Krete (Cassia surattensis (Burm.) F.), Lamtoro (Leucaena leucocephala L.) and Cocoa clones as sub plot which are Sulawesi 1, Sulawesi 2, KKM 22, KW 165. The observation of solar energy efficiency consists of daily solar radiation intensity, solar radiation intensity above plant, solar radiation intensity under plant, and also plant total dry weight. The experimental result showed that there is differences (heterogenity) between shading location based on homogenity test by Bartlett Method. There are some interaction between the kind of shading plant and clones in parameter of interception efficiency, absorbtion efficiency, the efficiency of solar energy that caught by plant, and solar energy conversion efficiency. The efficiency of solar energy that caught by plant will affect the solar energy conversion efficiency with R2 = 0,86.  Keywords : Solar Energy Efficiency, Cocoa Clones, Shading Plant, Nested Design, Bartlett Method

Wastewater disinfection by neutral pH photo-Fenton: The role of solar radiation intensity

2016 ◽  
Vol 181 ◽  
pp. 1-6 ◽  
Author(s):  
E. Ortega-Gómez ◽  
M.M. Ballesteros Martín ◽  
B. Esteban García ◽  
J.A. Sánchez Pérez ◽  
P. Fernández Ibáñez
Keyword(s):  
Solar Radiation ◽  
Radiation Intensity ◽  
Neutral Ph ◽  
Solar Radiation Intensity ◽  
Wastewater Disinfection
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