Study of Constructions for the Photovoltaic System to Increase the Economic Efficiency of Energy Generation

2014 ◽  
Author(s):  
Ching-Lung Lin ◽  
Chu-Huan Shih ◽  
Ching-Feng Lin ◽  
Kai-Jung Chen
Keyword(s):  
Economic Efficiency ◽  
Energy Generation ◽  
Photovoltaic System

Model (At Least) Twice, Build Once: Experiences With the Design–Bid–Build Process for Solar Photovoltaic Arrays

2017 ◽  
Vol 139 (3) ◽  
Author(s):  
Brian Dougherty ◽  
Matthew Boyd
Keyword(s):  
System Modeling ◽  
Energy Generation ◽  
Lessons Learned ◽  
Photovoltaic System ◽  
Solar Photovoltaic ◽  
Modeling Tools ◽  
Design Elements ◽  
Renewable Energy Generation ◽  
Key Events ◽  
Design Bid Build

Commercial-scale solar photovoltaic (PV) arrays were designed, constructed, and are now operational on the Gaithersburg, Maryland campus of the National Institute of Standards and Technology (NIST). A design–bid–build process was followed where the contractors used photovoltaic system modeling tools both during the initial design phase and during the postbid, prebuild phase. To help investigate the specific aspects of the contractors' evolving designs, the authors conducted their own independent photovoltaic system modeling. This independent modeling helped identify design elements that could be improved and so aided efforts to maximize the annual renewable energy generation. An estimated 2.5% gain in annual energy generation is being realized as a result of this independent modeling effort. To provide context for the modeling work and the lessons learned, key events impacting the design–bid–build process are described. The installed systems are summarized and also contrasted with the proposed designs. The power generation at three sites are compared over two different 12-month intervals.

Real-Time Analysis of Energy Generation of a Photovoltaic System Installed in the City of Lajeado, Rio Grande do Sul

2016 ◽  
Vol 26 (2) ◽  
pp. 105-119
Author(s):  
Luís Eduardo Fontana ◽  
Alberto Benguria Bezama ◽  
Camila Hasan ◽  
Munique Marder ◽  
Odorico Konrad
Keyword(s):  
Real Time ◽  
Rio Grande ◽  
Energy Generation ◽  
Photovoltaic System ◽  
Rio Grande Do Sul ◽  
Time Analysis ◽  
Real Time Analysis ◽  
The City

scholarly journals Techno-Economic Performance Analysis of a 40.1 kWp Grid-Connected Photovoltaic (GCPV) System after Eight Years of Energy Generation: A Case Study for Tochigi, Japan

2021 ◽  
Vol 13 (14) ◽  
pp. 7680
Author(s):  
Ghoname Abdullah ◽  
Hidekazu Nishimura
Keyword(s):  
Economic Performance ◽  
Capacity Utilization ◽  
Data Access ◽  
Energy Generation ◽  
Photovoltaic System ◽  
Performance Ratio ◽  
Solar Irradiation ◽  
International Electrotechnical Commission ◽  
Utilization Factor ◽  
And Performance

In this paper, the grid-connected photovoltaic system in Tochigi prefecture, Japan, is presented, and its technical and economic performance after eight years is evaluated. The system has a peak power of 40.1 kWp and has been in operation since 2012. The entire electricity generated by the system was fed into the state grid. The system is suitably monitored for one year (2019) and analyzed using the parameters developed and defined in the standard IEC 61724-1 by the International Electrotechnical Commission. The system’s different parameters included array yield, final yield, capacity utilization factor, and performance ratio of the system. An analytical model with solar irradiation obtained from Power Data Access Viewer was developed to investigate and evaluate the efficiency of the system monthly and annual energy generation by comparing the simulated and measured energy acquired from the inverter. A positive linear relationship is observed between solar irradiation data obtained from Power Data Access Viewer and the grid-connected photovoltaic system energy injected into the utility grid. While an annual total of 48,521 kWh of energy was expected to be generated, 38,071 kWh was generated and injected into the utility in 2019. This study also introduces and explains the mechanism of the Feed-In-Tariff system in Japan. The performance of the grid-connected photovoltaic system under this study was compared with that of other systems installed across the globe.

scholarly journals Possibilities of Using Fuel Cells for Energy Generation in Agricultural Greenhouses: A Case Study in Crete, Greece

2019 ◽  
Vol 11 (8) ◽  
pp. 113
Author(s):  
John Vourdoubas
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Renewable Energy Sources ◽  
Specific Energy Consumption ◽  
Energy Generation ◽  
Proton Exchange ◽  
Photovoltaic System ◽  
Low Carbon ◽  
Solar Pv ◽  
Solar Photovoltaics

The possibility of using fuel cells powered by solar hydrogen for energy generation in greenhouses with reference to the island of Crete, Greece has been examined. Change of fossil fuels used in greenhouses with renewable energies and sustainable energy technologies is very important for mitigation of climate change. Various renewable energy sources and low carbon emission technologies including geothermal energy, biomass, solar photovoltaics and co-generation systems have been used so far. Use of solar photovoltaics for generating electricity consumed in water electrolysis for hydrogen production has been investigated. Hydrogen feeding a proton exchange membrane fuel cell co-generating electricity and heat was used in a greenhouse located in Crete, Greece. The system could be useful in a stand-alone greenhouse with annual specific energy consumption at 150 KWh/m2. A solar photovoltaic system with nominal power at 33.33 KWp powering an electrolytic cell at 5.71 KW could produce annually 2,083 kg hydrogen. The hydrogen could feed a fuel cell at 1.71 KWel generating annually all the electricity required in a greenhouse of 1,000 m2. Co-produced heat could also cover 11.11% of the annual heat requirements in the greenhouse. It was found though that the overall electric efficiency of the system was very low at 4.5%. The low overall efficiency and the size of the solar-PV required indicate that the abovementioned energy system is not suitable in commercial agricultural greenhouses.

scholarly journals PROJECTED COST AND PROFITABILITY OF INVESTMENT IN PHOTOVOLTAIC INSTALLATIONS ON AN AGRITOURISM FARM

2017 ◽  
Vol XIX (2) ◽  
pp. 206-210
Author(s):  
Michał Roman ◽  
Kamil Krzysztof Roman ◽  
Krzysztof Nuszkiewicz
Keyword(s):  
Economic Efficiency ◽  
Cost Estimation ◽  
Energy Cost ◽  
Photovoltaic System ◽  
Photovoltaic Modules

The article aims to present projected cost and profitability of investment in photovoltaic installations on an agritourism farm. Special attention is drawn to economic efficiency of a system of photovoltaic modules installed on an agritourism farm hosting a four-member tourist group and using a photovoltaic system having a capacity of 5 kWp. It has also been assumed that the whole amount of electricity produced is used on the agritourism farm. The analysis results have taken into consideration the assumption estimating the use of energy at the level of about 5,000 kWh per year. The annual energy cost estimation is PLN 2,750 (5,000 kWh x PLN 0.55).

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