scholarly journals Relationships between the Number and Power of Hungarian Household-Sized Photovoltaic Power Plants and Selected Indicators of the Settlements: A Case Study

Processes ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 4
Author(s):  
Nóra Hegedűsné Baranyai ◽  
Henrik Zsiborács ◽  
András Vincze ◽  
Nóra Rodek ◽  
Martina Makai ◽  
...  
Keyword(s):  
Power Plants ◽  
Small Scale ◽  
Significant Relationships ◽  
Photovoltaic Power ◽  
Almost Everywhere ◽  
Pairwise Correlations ◽  
Service Areas ◽  
Complex Indicators ◽  
The Relationship

In the global transformation of energy systems, solar energy plays a prominent role, since the energy from our star is a limitless and clean resource, which is available practically almost everywhere. In spite of the immense advancements of photovoltaic systems, which utilize this source of energy, no in-depth research has been carried out regarding the present Hungarian status of the small-scale photovoltaic power plants, the most common type of solar power plant in Hungary. The novelty of this study is that it examines the number and power of these small-scale power plants at the settlement level within the service areas of the various distribution companies, by also considering the economic and infrastructural dimensions of the settlements. The paper seeks answers to the questions whether there are any significant relationships between the number and the power of power plants of this type and the indicators of the settlements, and if so, how strong they are. Besides pairwise correlations, the study also involved the analysis of the relationship between the ranking of the settlements based on the settlements’ complex indicators that were created from the settlements’ indicators and the ranking of the settlements according to the number and power of household-sized photovoltaic power plants per 1000 people. In the course of exploring the relationships, a regression model was also devised concerning the number of household-sized photovoltaic power plants and the settlement indicators.

scholarly journals Correlation Analysis of the Spread of Household-Sized Photovoltaic Power Plants and Various District Indicators: A Case Study

2021 ◽  
Vol 13 (2) ◽  
pp. 482
Author(s):  
Nóra Hegedűsné Baranyai ◽  
Henrik Zsiborács ◽  
András Vincze ◽  
Nóra Rodek ◽  
Martina Makai ◽  
...  
Keyword(s):  
Power Plants ◽  
Renewable Energy Sources ◽  
Total Power ◽  
The Public ◽  
Photovoltaic Power ◽  
Energy Needs ◽  
The Social ◽  
Service Areas ◽  
Complex Indicators

As efforts are made worldwide to meet the growing energy needs of the population in a more sustainable way, harnessing weather-dependent renewable energy sources is becoming more and more important. One of the available technologies is photovoltaic energy production. In the last decade, there has been a growing need among households, institutions, and businesses to reduce the use of fossil-fuel-based electricity from the public grid. In order to meet their electricity demand in Hungary, investors prefer using household-sized photovoltaic power plant (HMKE) systems. The novelty of this study is that it examines the number and total power of photovoltaic HMKEs at the district level in the service areas of different electricity distributors, taking into account the social, economic, infrastructural, and welfare dimensions of these districts as well. The study seeks to uncover whether there is a correlation between the number and total power of these types of power plants and the indicators of the districts, and if so, how strong these relationships are. The examination of the relationships also involved, in addition to correlations by pairs, the relationships of the ranking of the districts according to the complex indicators created from the district indicators and the ranking of the districts based on the number and power of photovoltaic HMKEs per 1000 members of the population. By exploring correlations, the paper seeks to establish a regression model for the number of photovoltaic HMKEs and the territorial (district) indicators.

scholarly journals The Economic and Geographical Aspects of the Status of Small-Scale Photovoltaic Systems in Hungary—A Case Study

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3489 ◽  
Author(s):  
Gábor Pintér ◽  
Henrik Zsiborács ◽  
Nóra Hegedűsné Baranyai ◽  
András Vincze ◽  
Zoltán Birkner
Keyword(s):  
Power Plants ◽  
Photovoltaic System ◽  
Small Scale ◽  
Photovoltaic Systems ◽  
Comprehensive Investigation ◽  
Photovoltaic Power ◽  
The Status ◽  
Average Size ◽  
Geographical Locations

The use of solar energy is an obvious choice; the energy of the sun is not only indispensable for most processes in nature but it is also a clean, abundant, sustainable, and—most importantly—universally available resource. Although the further spread of photovoltaic systems, which make use of this source of energy, is expected in the future all around the world, no comprehensive investigation has been conducted into the current situation of the small-scale photovoltaic power plants in Hungary, where this type of photovoltaic system is the most popular. By means of a case study, whose novelty lies in its focus on small-scale power plants and their complex examination, including economic and geographic indicators, this paper analyzes their status in Hungary. The study endeavors to establish the reasons for the popularity of this type of power plant and to identify some typical geographical locations with well-illustrated photovoltaic density. Residential, as well as business prosumers, were examined with the aim of learning more about the density of the small-scale photovoltaic systems and their geographical locations. Another goal was to calculate the average size of small-scale photovoltaic power plants and to gain more understanding of their economic aspects. The outcomes of this research include maps displaying the density of the small-scale photovoltaic power plants in Hungary and the results of the economic calculations for such investments.

scholarly journals Challenging Teachers’ Pedagogic Practice and Assumptions about Social Media

2017 ◽  
Vol 21 (2) ◽  
Author(s):  
Helen C. Cartner ◽  
Julia L. Hallas
Keyword(s):  
Professional Development ◽  
Social Media ◽  
Online Course ◽  
Small Scale ◽  
Pedagogical Practice ◽  
Critical Reasoning ◽  
Professional Development For Teachers ◽  
Effective Technology ◽  
The Relationship

This article describes an innovative approach to professional development designed to challenge teachers’ pedagogic practice and assumptions about educational technologies such as social media. Developing effective technology-related professional development for teachers can be a challenge for institutions and facilitators who provide this support. To contend with this challenge, we drew on Bain’s (2004) “baker’s dozen” questions to guide the design of an online postgraduate course for teachers. This article discusses the design of the online course and what teachers came to understand about the relationship between social media and teaching as a result of completing the course activities. This small-scale case study utilised qualitative data from three cohorts of participating teachers and found that teachers do change their pedagogical practice and assumptions about social media for their own teaching contexts when they engage in course activities that challenge their existing mental models and encourage critical reasoning and reflection on learning.

Brooklyn's agrarian questions

2014 ◽  
Vol 30 (1) ◽  
pp. 92-102 ◽  
Author(s):  
Evan Weissman
Keyword(s):  
New York ◽  
Urban Agriculture ◽  
Food Justice ◽  
Small Scale ◽  
Food Network ◽  
Alternative Food Network ◽  
The Usa ◽  
The Relationship ◽  
The City

AbstractThroughout the USA, urban agriculture is expanding as a manifestation of an emerging American food politics. Through a case study of Brooklyn, New York, I used mixed qualitative research methods to investigate the political possibilities of urban agriculture for fostering food justice. My findings build on the existing alternative food network (AFN) literature by indicating that problematic contradictions rooted in the neoliberalization of urban agriculture limit the transformative possibilities of farming the city as currently practiced in Brooklyn. I suggest that longstanding agrarian questions—concerns over the relationship between agriculture and capitalism and the politics of small-scale producers—are informative for critical interrogation of urban agriculture as a politicization of food.

As Seen on TV: Putting the NBC Opera on Stage

2018 ◽  
Vol 71 (3) ◽  
pp. 595-654 ◽  
Author(s):  
Danielle Ward-Griffin
Keyword(s):  
Twentieth Century ◽  
Small Scale ◽  
Television Watching ◽  
New Model ◽  
The 1950S ◽  
La Traviata ◽  
The Relationship ◽  
Opera Houses

This article examines the relationship between opera on television and opera on the stage in America in the 1950s and 1960s. Using the NBC Opera (1949–64) as a case study, I trace both what television borrowed from the operatic stage and what television sought to bring to the stage in a relationship envisioned by producers as symbiotic. Focusing on the NBC's short-lived touring arm, which produced live performances of Madam Butterfly, The Marriage of Figaro, and La traviata for communities across America in 1956–57, I draw upon archival evidence to show how these small-scale stage productions were recalibrated to suit a television-watching public. Instead of relying on the stylized presentation and grand gestures typical of major opera houses, the NBC touring performances blended intimate television aesthetics with Broadway typecasting and naturalistic direction. Looking beyond the NBC Opera, I also offer a new model for understanding multimedial transfer in opera, one in which the production style of early television opera did not simply respond to the exigencies of the screen, but rather sought to transform the stage into a more intimate—and supposedly more accessible—medium in the mid-twentieth century.

Technical and economic assessments of grid-connected photovoltaic power plants: Iran case study

Energy ◽  
2016 ◽  
Vol 114 ◽  
pp. 923-934 ◽  
Author(s):  
Saeed Edalati ◽  
Mehran Ameri ◽  
Masoud Iranmanesh ◽  
Hakimeh Tarmahi ◽  
Maysam Gholampour
Keyword(s):  
Power Plants ◽  
Photovoltaic Power

scholarly journals A Novel Method for Analyzing Highly Renewable and Sector-coupled Sub-national Energy Systems–Case Study of Schleswig-Holstein

2021 ◽  
Author(s):  
Md. Nasimul Islam Maruf
Keyword(s):  
Energy Demand ◽  
Power Plants ◽  
Energy Systems ◽  
Energy Transition ◽  
Heat Pumps ◽  
Offshore Wind ◽  
Small Scale ◽  
Ground Source Heat Pumps ◽  
Feasible Solutions

The energy transition requires integration of different energy carriers, including electricity, heat, and transport sectors. Energy modeling methods and tools are essential to provide a clear insight into the energy transition. However, the methodologies often overlook the details of small-scale energy systems. The study states an innovative approach to facilitate sub-national energy systems with 100% renewable penetration and sectoral integration. An optimization model, OSeEM-SN, is developed under the Oemof framework. The model is validated using the case study of Schleswig-Holstein. The study assumes three scenarios representing 25%, 50%, and 100% of the total available biomass potentials. OSeEM-SN reaches feasible solutions without additional offshore wind investment, indicating that they can be reserved for supplying other states’ energy demand. The annual investment cost varies between 1.02 bn – 1.44 bn €/yr for the three scenarios. The electricity generation decreases by 17%, indicating that with high biomass-based combined heat and power plants, the curtailment from other renewable plants can be decreased. Ground source heat pumps dominate the heat mix; however, their installation decreases by 28% as the biomass penetrates fully into the energy mix. The validation confirms OSeEM-SN as a beneficial tool to examine different scenarios for sub-national energy systems.

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