Analiza kapaciteta i uslova izgradnje fotonaponskih sistema na krovovima školskih objekata u Srbiji

2020 ◽  
Vol 22 (1-2) ◽  
pp. 21-28
Author(s):  
Iva Batić ◽  
◽  
Željko Đurišić
Keyword(s):  
Electricity Consumption ◽  
Plant Production ◽  
Electricity Production ◽  
School Buildings ◽  
Photovoltaic Systems ◽  
Photovoltaic Panels ◽  
Passive Construction ◽  
Production And Consumption ◽  
Roof Area ◽  
Installed Capacity

School and school gym buildings represent a relevant potential for construction of photovoltaic panels, to be integrated into roofs of these buildings. Given that roof structures are passive, construction of photovoltaic systems does not interfere with the building functionality, does not it in any way adversely affect the environment. Installation of photovoltaic systems on building roofs brings the production and consumption of electricity closest possible, therefore such systems ensure significant reduction in power losses in transmission and distribution grids. In addition to locally produced electricity, construction of photovoltaic systems on the school buildings’ roofs produces an educational effect as well. By installing a measuring and acquisition system which would include the measuring data on the photovoltaic power plant production parameters and school electricity consumption into school labs, technology would be closer to students, as well as possibilities to meet the demand for electricity from this basic renewable energy source. This paper presents the results of evaluations of the available roof surfaces of school buildings in Serbia for the photovoltaic panels installation. For each category of school building, an estimate of possible annual production per unit of average roof area was made. Summarizing all the results, estimates of possible installed capacity and annual electricity production for different scenarios are given.

scholarly journals Photovoltaic greenhouses: evaluation of shading effect and its influence on agricultural performances

2014 ◽  
Vol 45 (4) ◽  
pp. 168 ◽  
Author(s):  
Sergio Castellano
Keyword(s):  
Energy Efficiency ◽  
Rural Areas ◽  
Threshold Value ◽  
Plant Production ◽  
Photovoltaic Systems ◽  
Scientific Evaluation ◽  
Shading Effect ◽  
Photovoltaic Panels ◽  
Pv Modules ◽  
San Rafael

During the last years, European government remuneration polices promoted the realisation of photovoltaic systems integrated with the structures instead of on ground photovoltaic (PV) plants. In this context, in rural areas, greenhouses covered with PV modules have been developed. In order to interdict the building of greenhouses with an amount of opaque panels on covering not coherent with the plant production, local laws assigned a threshold value, usually between 25% and 50%, of the projection on the soil of the roof. These ranges seem not to be based on scientific evaluation about the agricultural performances required to the building but only on empirical assessments. Purpose of this paper is to contribute to better understand the effect of different configurations of PV panels on the covering of a monospan duo-pitched roof greenhouse in terms of shading effect and energy efficiency during different periods of the year. At this aim, daylighting and insolation analysis were performed by means of the software Autodesk<sup>®</sup> Ecotect<sup>®</sup> Analysis (Autodesk, Inc., San Rafael, CA, USA) on greenhouse model with different covering ratio of polycrystalline photovoltaic panels on the roof.

scholarly journals Analysis of The Covid-19 Impact on Electricity Consumption and Production

2020 ◽  
Author(s):  
Mehmet Bulut
Keyword(s):  
Social Life ◽  
Electricity Consumption ◽  
Electricity Production ◽  
Full Time ◽  
Mass Consumption ◽  
Electricity Use ◽  
Production And Consumption ◽  
The World ◽  
New Type ◽  
The Impact

With the year 2020, the world faced a new threat that affects all areas of life, negatively affects production in all areas, and paralyzes social life. The measures and restrictions taken by the country's governments to prevent the epidemic from spreading rapidly in the society with the effect of the Covid-19 virus, which first appeared in China and spread all over the world, brought a new lifestyle. Covid-19 has been much the impact on electricity use and electricity production in the period in Turkey as in other countries. There was a sharp decline in commercial and industrial electricity use. The coronavirus effect has also been reflected in the electricity demand and the consumption amount has undergone a great negative change. Due to the enactment of measures against the new type of coronavirus (COVID-19) epidemic and the partial or full-time curfews, electricity consumption was moved to homes, supermarkets, and hospitals in April 2020 from places where mass consumption is intense, such as industry, workplaces, and educational institutions. In this study, Covid-19 period, the first cases were examined electricity production and consumption in Turkey as of the date it is seen throughout, in comparison with electricity consumption data in the same month of the previous years corresponding to this period, the effects on electricity generation and consumption habits of this period were examined.

Analysis of Electricity Production and Consumption in the Western Economic Zone of the Republic of Sakha (Yakutia) for Developing an Effective Fuel and Energy Balance

2018 ◽  
Vol 9 (4) ◽  
pp. 1222 ◽  
Author(s):  
Izabella Damdinovna ELYAKOVA ◽  
Nadezhda Sergeevna BURYANINA ◽  
Yuri Fedorovich KOROLUK ◽  
Aleksandr Lvovich ELYAKOV ◽  
Larisa Ivanovna DANILOVA ◽  
...  
Keyword(s):  
Economic Status ◽  
Research Work ◽  
Electricity Consumption ◽  
The State ◽  
Electricity Production ◽  
Human Potential ◽  
Production And Consumption ◽  
Work Assessment ◽  
Economic Zone ◽  
The Republic

This article gives a comparative assessment of the efficiency of electricity production and consumption in the Western Economic Zone (WEZ) of the Republic of Sakha (Yakutia), following the results of the research work ‘Assessment and the Main Trends in the Change of the Natural and Socio-Economic Status and Human Potential of the Western Economic Zone of the Republic of Sakha (Yakutia)’ within the framework of the program of comprehensive scientific research under the state contract N5329 of August 7, 2017. Based on the analysis, the existing risks of electricity supply in the WEZ areas are identified, and recommendations for effective electricity consumption and production in the WEZ areas are developed. The study makes it possible to develop comprehensive recommendations for increasing the efficiency of electricity production and consumption in the WEZ areas. No similar studies have been conducted for the WEZ of the Republic of Sakha (Yakutia) in the past five years. In this regard, the study is significant because both natural and cost indices of electricity production and consumption are calculated for the first time, and recommendations for effective electricity consumption are given in the context of the WEZ settlements. The study helps to assess the state of energy in the WEZ areas of the Republic of Sakha (Yakutia).

scholarly journals BALANSING OF POWER AND ELECTRICITY IN THE ELECTRIC POWER SYSTEM WITH RENEWABLE ENERGY SOURCES BY CRITERIONAL METHOD

2021 ◽  
pp. 62-70
Author(s):  
Petro Lezhniuk ◽  
Olha Buslavets ◽  
Olena Rubanenko
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Electric Power System ◽  
Electricity Production ◽  
Energy Sources ◽  
Flexible Generation ◽  
Installed Capacity

This article considers the features of the development of renewable energy sources in electrical networks. The main changes in the functional properties of power systems, which include a significant reduction in electricity consumption, change in the structure of electricity consumption, rapid increase in the installed capacity of solar and wind power plants. Electricity consumption in 2020 is almost halved compared to 1990 (from 227 to 119 billion kWh) and as a consequence the share of semi-peak thermal generation, which gave the power system basic flexibility, has significantly decreased (from 71 % in 1990 to 35 % in 2020) and at the same time the share of nuclear generation, which operates in base mode, has increased (from 25 % to 51 %). In particular, consumption by industry with a stable load schedule, decreased (from 146 billion kWh (64 %) to 49 billion kWh (42 %)). At the same time, the demand for electricity by the households, whose consumption profile of which is characterized by significant daily unevenness and sensitivity to meteorological factors, has significantly increased (from 21 billion kWh (9 %) to 37 billion kWh (31 %)). Therefore, the article analyses the preconditions for the problem of flexible generation and explores possible ways to solve them. The optimal composition of electricity generation for Ukraine in the period 2021–2025 is proposed, which provides for the preservation and even increase by optimizing the repair campaign of the share of electricity production by nuclear power plants, the introduction of additional 2–2.5 GW of highly flexible generation and up to 2 GW storage systems (taking into account the pumped-storage power plant), as well as a gradual evolutionary decline in both installed capacity and electricity production by semi-peak coal-fired power plants and maintaining a policy of decarbonisation to ensure its own energy security. A comprehensive approach to compensating for the instability of renewable energy sources generation has been developed, which consists in minimizing the cost of power redundancy in various available ways. The problem of cost optimization for ways to compensate for the instability of renewable energy sources generation is solved by the method of criterion programming. The impact of each backup method on total costs is determined using sensitivity theory.

scholarly journals A Comparative Assessment for the Potential Energy Production from PV Installation on Residential Buildings

2020 ◽  
Vol 12 (24) ◽  
pp. 10344
Author(s):  
Sameh Monna ◽  
Adel Juaidi ◽  
Ramez Abdallah ◽  
Mohammed Itma
Keyword(s):  
Potential Energy ◽  
Energy Production ◽  
Residential Buildings ◽  
Electricity Consumption ◽  
Residential Building ◽  
Electricity Production ◽  
Energy Sustainability ◽  
Pv Systems ◽  
Residential Units ◽  
Future Consumption

This paper targets the future energy sustainability and aims to estimate the potential energy production from installing photovoltaic (PV) systems on the rooftop of apartment’s residential buildings, which represent the largest building sector. Analysis of the residential building typologies was carried out to select the most used residential building types in terms of building roof area, number of floors, and the number of apartments on each floor. A computer simulation tool has been used to calculate the electricity production for each building type, for three different tilt angles to estimate the electricity production. Tilt angle, spacing between the arrays, the building shape, shading from PV arrays, and other roof elements were analyzed for optimum and maximum electricity production. The electricity production for each household has been compared to typical household electricity consumption and its future consumption in 2030. The results show that installing PV systems on residential buildings can speed the transition to renewable energy and energy sustainability. The electricity production for building types with 2–4 residential units can surplus their estimated future consumption. Building types with 4–8 residential units can produce their electricity consumption in 2030. Building types of 12–24 residential units can produce more than half of their 2030 future consumption.

scholarly journals Produkcja energii elektrycznej ze źródeł odnawialnych w krajach Unii Europejskiej i w Polsce w kontekście koncepcji zrównoważonego rozwoju

2017 ◽  
Vol 17(32) (2) ◽  
pp. 126-135
Author(s):  
Łukasz Kozar
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Data Bank ◽  
Electricity Production ◽  
Energy Sources ◽  
Local Data ◽  
Renewable Sources ◽  
Regional Aspect ◽  
The Eu

The article presents changes that occurred in the production of electricity from renewable energy sources in the EU-28 and in Poland in the years of 2010-2015. The analysis of the changes was based on the data from Eurostat and the Local Data Bank. Based on the indicator of the share of electricity generated from renewable sources in gross electricity consumption, Poland in the period under discussion, was characterized as one of the highest dynamics of change among all EU countries. In addition, the article analyzes the situation concerning the production of electricity in Poland in the regional aspect. From the taken analyzes, it is clear that in all voivodeships, apart from Małopolskie voivodeship, in 2015, more electricity was produced from renewable sources compared to 2010. In the period under discussion, the share of electricity production from renewable sources in total electricity production also increased by 99% in Poland.

scholarly journals Photovoltaic systems – types of installations, materials, monitoring and modeling - review

2020 ◽  
pp. 40-49 ◽  
Author(s):  
Angelika Anduła ◽  
Dariusz Heim
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Residential Buildings ◽  
Future Research ◽  
Photovoltaic Systems ◽  
Zero Energy ◽  
Thermal Systems ◽  
Photovoltaic Panels ◽  
Common Solution

Photovoltaic systems have become a common solution for, both small residential buildings as well as large service buildings. When buildings are being designed, it is important to focus on the aspect of the object’s energy efficiency as lowering the energy consumption of a given facility is crucial. The article discusses the use of photovoltaic panels such as so-called BAPV (Building Applied Photovoltaics) and BIPV (Building Installed Photovoltaics) installations as well as photovoltaic thermal systems (PV/T), which generate both electricity and heat. The role of PV installation in so-called zero energy buildings and proposals for future research and solutions are also discussed.

Maize and Mississippian Beginnings

2017 ◽  
Author(s):  
Amber M. Vanderwarker ◽  
Dana N. Bardolph ◽  
C. Margaret Scarry
Keyword(s):  
Zea Mays ◽  
Social Systems ◽  
Plant Production ◽  
Cultural Tradition ◽  
Central Feature ◽  
Long Distance ◽  
Regional Patterns ◽  
Production And Consumption ◽  
Definition Of ◽  
The Relationship

The adoption and intensification of maize (Zea mays) farming has long been a topic of interest in Mississippian archaeology. At various times throughout the development and definition of “Mississippian” as a cultural tradition, maize has been cast as a central feature of Mississippian adaptation, alongside a suite of other traits that include long-distance exchange, platform mound building, and the development of ranked social systems. In (re-)considering the topic of Mississippian beginnings, we continue to interrogate the nature of the relationship between maize farming and Mississippian origins. Our archaeological review of regional patterns of plant production (archaeobotanical results) and plant consumption (isotopic results) reveals that Mississippians throughout southeastern and midwestern North America produced and consumed maize, but varied significantly in their levels of production and consumption.

Sign in / Sign up

Export Citation Format

Share Document