scholarly journals Solar energy available and energy generated in photovoltaic systems in different inclinations and orientations of roofs of buildings

2021 ◽  
Vol 10 (16) ◽  
pp. e279101623494
Author(s):  
Michael Collin Vargas ◽  
Jair Antonio Cruz Siqueira ◽  
Luciene Kazue Tokura ◽  
Reginaldo Ferreira Santos ◽  
Fúlvio Natércio Feiber
Keyword(s):  
Solar Energy ◽  
Energy Resource ◽  
Resource Assessment ◽  
Production Performance ◽  
Solar Irradiation ◽  
Ceramic Fiber ◽  
Photovoltaic Systems ◽  
The North ◽  
Global Solar Irradiation ◽  
Unfavorable Condition

This work aimed to determine the solar energy available in different inclinations and orientations of roofs of buildings in the four seasons, using data of Global Solar Irradiation in the horizontal plane, temperatures, and wind speed. The inclined hourly solar irradiation and the energy generated by photovoltaic systems of different capacities installed in Cascavel-PR were simulated, with different orientations and inclinations and types of roofs (ceramic, fiber cement and metal). SWERA (Solar and Wind Energy Resource Assessment) daily global solar irradiation and wind velocity data were used to simulate daily inclined global solar irradiation in PVSyst software. Thus, also with the help of the software, the energy generated by photovoltaic systems of different capacities installed in Cascavel - PR, with different orientations and inclinations of roofs was determined. Consequently, the levels of losses in different seasons of the year were calculated and an analysis of the economic viability of the undertakings was made. Thus, the losses, profits and income of the systems were compared. Solar panels installed in northern oriented ceramic roofs provide better energy production performance throughout the year compared to metallic roofs and fibrocement. However, for the other orientations (South, East and West), the losses for ceramic roofs were twice as high as the metallic and fibrocement roofs in relation to their respective northern orientated slopes. Regarding orientation, roofs oriented to the North receive more Irradiation annually and therefore produce more energy. Then there is East, West and South as the most unfavorable condition.

scholarly journals Mapping and Estimation of Monthly Global Solar Irradiation in Different Zones in Souss-Massa Area, Morocco, Using Artificial Neural Networks

2017 ◽  
Vol 2017 ◽  
pp. 1-19 ◽  
Author(s):  
O. Nait Mensour ◽  
S. Bouaddi ◽  
B. Abnay ◽  
B. Hlimi ◽  
A. Ihlal
Keyword(s):  
Solar Energy ◽  
Solar Irradiation ◽  
Kriging Interpolation ◽  
Solar Pv ◽  
Energy Potential ◽  
Global Solar Irradiation ◽  
Interpolation Technique ◽  
Artificial Neural ◽  
Artificial Neural Network Ann ◽  
Hidden Layer

Solar radiation data play an important role in solar energy research. However, in regions where the meteorological stations providing these data are unavailable, strong mapping and estimation models are needed. For this reason, we have developed a model based on artificial neural network (ANN) with a multilayer perceptron (MLP) technique to estimate the monthly average global solar irradiation of the Souss-Massa area (located in the southwest of Morocco). In this study, we have used a large database provided by NASA geosatellite database during the period from 1996 to 2005. After testing several models, we concluded that the best model has 25 nodes in the hidden layer and results in a minimum root mean square error (RMSE) equal to 0.234. Furthermore, almost a perfect correlation coefficient R=0.988 was found between measured and estimated values. This developed model was used to map the monthly solar energy potential of the Souss-Massa area during a year as estimated by the ANN and designed with the Kriging interpolation technique. By comparing the annual average solar irradiation between three selected sites in Souss-Massa, as estimated by our model, and six European locations where large solar PV plants are deployed, it is apparent that the Souss-Massa area is blessed with higher solar potential.

Solar Energy Resource Assessment for Chile

2008 ◽  
Author(s):  
Alberto Ortega ◽  
Rodrigo Escobar ◽  
Sergio Colle
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Energy Levels ◽  
Energy Resource ◽  
Energy System ◽  
Resource Assessment ◽  
Apparent Lack ◽  
The Andes ◽  
Energy System Planning ◽  
Energy Maps

The Chilean government’s energy policy and the power generation sector plans include wind, geothermal, hydro and biomass powerplants in order to introduce renewable energy systems to the country, but they do not mention solar energy to be a part of the plan. This apparent lack of interest in solar energy is partly due to the absence of a valid solar energy database, adequate for energy system planning activities. The only available solar radiation database is relatively old, with measurements taken in 89 stations from the 60’s onwards, obtained with high-uncertainty sensors such as Campbell-Stokes devices and pyranographs. Moreover, not all stations have measured incoming solar radiation for an adequate time span. Here, we compare the existing database of solar radiation in Chile with estimations made with satellite measurements, obtained from the GOES program through collaboration with the Brazilian space institution, INPE. Monthly mean solar energy maps are created from both data sources and compared, using Krigging methods for spatial interpolation. It is found that a maximum 30 percent deviation exist, with snow covers in the Andes Mountains adding additional uncertainty levels. The solar energy levels throughout the country can be considered as high, and it is thought that they are adequate for energy planning given proper diffusion and support by editing a Chilean Solar Atlas.

Solar energy resource assessment in Chile: Satellite estimation and ground station measurements

2014 ◽  
Vol 71 ◽  
pp. 324-332 ◽  
Author(s):  
Rodrigo A. Escobar ◽  
Cristián Cortés ◽  
Alan Pino ◽  
Enio Bueno Pereira ◽  
Fernando Ramos Martins ◽  
...  
Keyword(s):  
Solar Energy ◽  
Energy Resource ◽  
Resource Assessment ◽  
Ground Station

Solar energy resource assessment — Brazil

2002 ◽  
Vol 27 (3) ◽  
pp. 383-400 ◽  
Author(s):  
C. Tiba ◽  
N. Fraidenraich ◽  
H. Grossi Gallegos ◽  
F.J.M. Lyra
Keyword(s):  
Solar Energy ◽  
Energy Resource ◽  
Resource Assessment

scholarly journals Solar Energy Resource Assessment of the Geba Catchment, Northern Ethiopia

2014 ◽  
Vol 57 ◽  
pp. 1266-1274 ◽  
Author(s):  
Anwar Mustefa Mahmud ◽  
Mulu Bayray Kahsay ◽  
Asfafaw Hailesilasie ◽  
Ftwi Yohaness Hagos ◽  
Petros Gebray ◽  
...  
Keyword(s):  
Solar Energy ◽  
Energy Resource ◽  
Resource Assessment ◽  
Northern Ethiopia

The State of Solar Energy Resource Assessment in Costa Rica

2016 ◽  
Author(s):  
N. Alvarado ◽  
Rodrigo A. Escobar ◽  
John Boland ◽  
Evelyn Quiros
Keyword(s):  
Costa Rica ◽  
Solar Energy ◽  
Energy Resource ◽  
Resource Assessment ◽  
The State

Implementing building integrated photovoltaics in the housing sector in South Africa

2013 ◽  
Vol 24 (2) ◽  
pp. 77-82 ◽  
Author(s):  
Sosten Ziuku ◽  
Edson L. Meyer
Keyword(s):  
South Africa ◽  
Solar Energy ◽  
Energy Efficient ◽  
Fossil Fuels ◽  
Energy Resource ◽  
Primary Energy ◽  
Simulation Software ◽  
Building Integrated Photovoltaics ◽  
The North ◽  
Heating And Cooling

The installation of Building Integrated Photovoltaics (BIPV) has been increasing rapidly throughout the world, yet little, if at all, has been reported in South Africa. The country has abundant solar energy resource estimated to be between 4.5 and 6.5 kWh/m2/day, yet solar energy contributes less than 1% to the country’s energy mix. More than 90% of the country’s primary energy comes from fossil fuels leading to an unsustainable per capita carbon footprint of about 9 tCO2e. Previous research has shown that photovoltaics can significantly augment the constrained fossil fuel generated electricity supply. This paper discusses the practical application of photovoltaics as a building element in energy efficient residential housing. The study also aims to determine the feasibility of implementing BIPV systems in the residential sector in South Africa. An energy efficient solar house was designed using simulation software and constructed. Ordinary solar panels were integrated onto the north facing roof of the house. A data acquisition system that monitors meteorological conditions and BIPV output was installed. It was observed that elevated back of module temperatures reaching up to 75°C on sunny days decreased module efficiency by up to 20% in the afternoon. The temperature profiles reveal that BIPV products can significantly influence indoor heating and cooling loads. The research seeks to raise awareness among housing stakeholders and solar industry policy makers of the feasibility of BIPV in South Africa.

The state of solar energy resource assessment in Chile

2010 ◽  
Vol 35 (11) ◽  
pp. 2514-2524 ◽  
Author(s):  
Alberto Ortega ◽  
Rodrigo Escobar ◽  
Sergio Colle ◽  
Samuel Luna de Abreu
Keyword(s):  
Solar Energy ◽  
Energy Resource ◽  
Resource Assessment ◽  
The State
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