scholarly journals A techno-economic analysis of floating photovoltaic systems, for southern European countries

2021 ◽  
Vol 19 ◽  
pp. 57-62
Author(s):  
J. Baptista ◽  
P. Vargas ◽  
J.R. Ferreira

In the last few decades, the vast majority of world states have faced increased energy consumption using more environmentally friendly production technologies. The use of traditional renewable energies like hydro, wind and solar has been the solution found. Despite this, new technical solutions and strategies are beginning to emerge, of which Floating Solar Photovoltaic (FSPV) systems are part. In this framework, southern European countries have excellent climate conditions for reinforcing the use of solar energy. This research assess the existing Portuguese potential for floating PV systems and its integration in the power grid. A floating solar power plant of 1MW in Gouvães dam included in the Tâmega hydroelectric complex, under construction in northern Portugal was sizing and evaluated its energy potential. A techno-economic feasibility study was also carried out taking into account the current investment costs and energy tariffs in the Iberian liberalized market. This integrated analysis allowed to obtain important results on the current state of the art, types of technologies available, their costs and the payback period for this type of projects.

2017 ◽  
Vol 32 (1) ◽  
pp. 57
Author(s):  
Francisca Valdelice Pereira Silva ◽  
Hernandes Oliveira Feitosa ◽  
Claudio Faustino Pereira ◽  
João Alvino Sampaio Silva ◽  
Erialdo Oliveira Feitosa

Atualmente há uma preocupação na utilização de energia solar como meios alternativos, tendo em vista a viabilidade para implantação dos sistemas fotovoltaicos. Sendo de extrema importância nos tempos atuais devido à necessidade de utilização de novas fontes de energia renováveis. O objetivo desse trabalho é analisar a viabilidade econômica do uso da energia solar na agricultura familiar irrigada no município de Barbalha. O trabalho foi desenvolvido a partir de dados coletados na Estação Climatológica, localizada em Barbalha, numa série histórica de 30 anos, esses dados foram inserido num programa computacional Retscreen para analisar a viabilidade de projetos, foi feita uma simulaçao do sistema fotovoltaico para geração de energia acionando um conjunto motobomba de 1,0 cv para transportar água a uma caixa com capacidade de 1000 l á 6 m de altura, em seguida será realizada a irrigação por gotejamento de forma gravitacional numa área de 1 há cultivado com milho. Os resultados foram que o sistema só terá um retorno financeiro em 18,5 anos, passando essa energia solar para os agricultores verificamos que somando todos os custos do agricultor será de R$ 7710,00 com uma receita bruta de R$ 11963,52 durante dez meses período em que se podem cultivar dois ciclos de milho irrigado, obtendo uma receita liquida de R$ 4253,52. Assim, o agricultor poderá pagar o investimento da energia fotovoltaica em menos tempo. O sistema mostra-se vantajoso nestes aspectos e abre uma interessante perspectiva de aproveitamento mais eficiente da energia solar na irrigação.Palavras-chave: energia solar; sistemas fotovoltaicos; viabilidade econômica. SOLAR ENERGY POTENTIAL FOR IRRIGATION IN THE MUNICIPALITY OF BARBALHA-CEAbstract: Currently there is concern in the use of solar energy as alternative means in order to implement the viability of PV systems. It is of paramount importance in the present times due to the necessity of use of new renewable energy sources. The aim of this study is to analyze the economic feasibility of using solar energy in irrigated family farming in the municipality of Barbalha. The work was developed from data collected in the Climatological Station, located in Barbalha, a historical series of 30 years, this data is inserted into a computer program Retscreen Software to analyze the feasibility of projects, it was made a Simulation of the photovoltaic system for generating energy driving a pump of 1.0 hp to carry water to a box with 1000 l capacity with 6 m high, then will be held drip irrigation of gravity form an area of 1 is cultivated with milho.Os results were the system will only have a financial return approximately 18.5 years, passing this energy for farmers we found that adding all the farmer's cost will be R $ 7,710.00 with gross revenues of R $ 11,963.52 for ten month period in that can grow two cycles of irrigated corn, obtaining a net income of R $ 4,253.52. Thus, the farmer can afford the investment of photovoltaics in less time. The system seems advantageous in these aspects and opens an interesting perspective more efficient use of solar energy for irrigation. Keywords: solar energy; photovoltaics; economic viabilit.


Author(s):  
A Elia

The objective in introducing tilting systems for passenger trains is to optimize the service, shortening travel time and improving comfort, while making minimum alterations to existing track layouts and service conditions. The development of the Pendolino system is described in this paper, starting from early tests on bogies and on tilting systems. The author then describes the extensive service experience of Fiat, with more than 50 million train-km produced and 100 trainsets in service or under construction for service in European countries. An outline is presented of current developments and the product strategy, together with a description of available R&D prediction/measuring tools.


2020 ◽  
Vol 19 (1) ◽  
pp. 61-70
Author(s):  
Jacek Strojny

In spite of the evolution of the agrarian structure in EU countries (particularly in Western Europe) the problem of small agricultural holdings is still relevant, as this form of farming remains functional. The term ‘small farm’ has an ambiguous character. Thus, the study is based on relatively the most objective criterion for identification of small holdings – farms covering areas below 5 ha. The study employs the statistical method of vector elimination, which enables separation of subgroups with similar, homogeneous agrarian structures from among the studied set. The typology of the agrarian structure by means of the taxonomic technique demonstrates how diverse EU countries are with regard to their small agricultural holdings: Southern European countries, some Central European countries, and other states lying in the north of Europe. Additionally, the structure of small agricultural holdings is distinct in Denmark and in the Czech Republic.


2019 ◽  
Vol 5 (Supplement) ◽  
Author(s):  
Ariadna Feliu ◽  
Cristina Martinez ◽  
Marta Enriquez ◽  
Laura Anton ◽  
Ruth Ripoll ◽  
...  

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