scholarly journals Environmental Education and Energy Efficiency as Strategies for Reducing Energy Consumption in Public School Building in Goiânia

2019 ◽  
Vol 6 ◽  
pp. 13-32
Author(s):  
Marlison Noronha Rosa ◽  
Yan Machado Sousa ◽  
Karla Emmanuela Ribeiro Hora ◽  
Katia Kopp ◽  
Getulio Antero de Deus Junior
Keyword(s):  
Energy Efficiency ◽  
Environmental Education ◽  
Technological Development ◽  
Age Groups ◽  
Electric Energy ◽  
Education Sector ◽  
Public Buildings ◽  
Future Possibility ◽  
The Public ◽  
Architecture Model

Electrical energy is essential for the quality of life of people, who use it in different socioeconomic activities and for technological development. In view of the gradual increase in the demand for electricity and the future possibility of not serving all the consumer sectors, it is necessary to optimize it. The objective of this study was the application of strategies based on the pillars of energy efficiency and environmental education in order to minimize the expenditure of electric energy in public buildings, which were selected for this project due to the fact that, its users show a lack of concern about the correct consumption of electric energy since the expenses are tied to the public coffers and are not always perceived by the people as resources coming from the taxes paid by the citizens. Among the public buildings that consume the most electric energy, the most important are those in the education sector. In fact, a larger project called the Energy Efficiency Project in Public Buildings in Goiânia (PEEEPG), to which this work is linked, found that among the municipal public buildings, the education sector is responsible for approximately 30% of the electricity consumption and, therefore, this specific sector was selected for the application of the selected strategies. The methodology used was based on research-participant, environmental education together with replacement of lamps by LED system (Light Emitting Diode) at strategic locations in the building and monitoring of results. The actions carried out included the lamp replacement, and educational lectures offered to students of different age groups in three school shifts with a partnership of employees and teachers of the municipal school selected on energy efficiency and strategies to reduce the consumption of electricity. The project mobilized directly about 200 people belonging to the target audience and indirectly 800 students who were part of the teaching unit. It was collected a data base among 2012 to 2016. The methods of data collection and analysis were based on documentary research, analyzing the electric energy bills of the building, as well as documents and legislation of the municipality itself on the consumption of electric power and the architecture model applied to school environments in Goiânia. The results obtained, after a monitoring period of six months (November to April) during the years 2016 and 2017, indicated an analyze to reduction of 16% of the consumption of electric energy in the building, compared to the same period in the previous year. Therefore, this result regard to the possibility of investments in energy efficiency projects for public buildings, subsidizing actions in the design, retrofit and maintenance of public buildings.

Economic and Ecologic Analysis of Wind Energy as Steps in Starting a New Business

2017 ◽  
pp. 133-159
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Kinetic Energy ◽  
Environmental Impact ◽  
Wind Energy ◽  
Wind Turbine ◽  
Technological Development ◽  
Electric Energy ◽  
Energy Capacity ◽  
New Business

Wind energy has a long history but in the last decades the technological development and the increasing energy efficiency push this business on a top position for the installed renewable energy capacity worldwide. For a better understanding of the economic and ecologic analysis of the business into the wind energy sector, in this chapter, are presented the main principles and energy concepts related to renewable energy, especially for wind energy. The analysis is focused on the importance of the main elements of a wind turbine and its costs structure. The wind turbine is analyzed also along its lifecycle in order to identify the environmental impact from the row material extraction to the end of lifetime. The main objective of this chapter is to understand the importance of wind energy as a renewable energy and how to use the kinetic energy of wind in order to generate electric energy taking into account its efficiency and also its impact on the environment.

Comparison of Energy Efficiency Standards in the Public Building of China, the US, the UK

2013 ◽  
Vol 869-870 ◽  
pp. 389-392 ◽  
Author(s):  
Lin Gu ◽  
Yu Rong Zhang ◽  
Yuan Feng Wang
Keyword(s):  
Energy Efficiency ◽  
National Standard ◽  
Public Buildings ◽  
Design Standards ◽  
Total Energy Consumption ◽  
The Public ◽  
The Us ◽  
Term Energy ◽  
The Uk ◽  
Energy Efficiency Standards

The China construction industry accounts for about 30% of total energy consumption, a high proportion of the energy consumed, which causes a large amount of emissions of greenhouse gas. This paper takes a look at the China national standard GB50189-2005, Design Standard for Energy Efficiency of Public Buildings, the ASHRAE90.1 of US and the part L of UK, and then compares the similarities and differences between the three design standards. At the end, relevant suggestion to tackle these weaknesses for long-term energy efficiency development in public buildings are proposed in this paper.

Educar la mirada: Un proyecto de creación audiovisual para sujetos no productivos

2020 ◽  
Author(s):  
Mariano García Plaza ◽  
Marisa Víctor Crespo ◽  
Jesús Ramé López
Keyword(s):  
Public School ◽  
Technological Development ◽  
Careful Attention ◽  
Educational Community ◽  
Audiovisual Communication ◽  
Creative People ◽  
Daily Lives ◽  
The Public ◽  
Historical Landscape ◽  
Language Patterns

Multiscreen society bombards us with images about which we can not think, to this is added a technological development that is hast urned us as a issues – receivers of pictures / images in our daily lives. Thus arises a need to deepen the possibilities of emancipation that the current socio-historical landscape can have.“Educar la mirada” we are a group of professionals in education and audiovisual communication that pretend, through film- art and new audiovisual creation devices, to encourage literacy and audiovisual creation for life. We start from work with collectives whose artistic motive has no lucrative interest, such as the public school; hence our interest in non-productive subjects. This project arises from the work carried out by the Trabenco Educational Community ( Public School ) in relation to the environment that exists between childhood and the audiovisual media.Theories of reflection on audiovisual literacy and ways of doing creative people who have a clearer meaning for our approach are: F.P.R Bergala, work CineSinAutor, proposals for Medvedkin, language patterns Alxander and creative crystallizations by authors such as Trier, Rossellini, Rodari, Vigotsky or Svankmajer.This project aims at a careful attention to the audiovisual with the intention of giving it a use beyond stagnant paradigms, where the possibilities we seek are those that make effective the needs and purposes that are given by the collectives themselves.

scholarly journals A Survey of the Knowledge of Truffles among Polish Foresters and Implications for Environmental Education

Forests ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 365
Author(s):  
Dorota Hilszczańska ◽  
Aleksandra Rosa-Gruszecka ◽  
Bogusław Kosel ◽  
Jakub Horak ◽  
Marta Siebyła
Keyword(s):  
Environmental Education ◽  
Forest Ecology ◽  
Public Attention ◽  
Hypogeous Fungi ◽  
The Public ◽  
Age Cohorts ◽  
The Past ◽  
Ecology Education ◽  
And Gender ◽  
Tuber Spp

While the use of truffles in Poland has a long tradition, for historical reasons this knowledge was almost lost. Currently, truffles and truffle orchards are again receiving public attention. For example, the Polish State Forests supported the establishment of truffle orchards by the Forestry Research Institute. In recent years, knowledge concerning these unique hypogeous fungi has been disseminated systematically through scientific and popular publications, films, and electronic media. This study investigates the awareness of economically and culinary valued truffle fungi (Tuber spp.) among more than 1400 Polish foresters. The results show that 70% of interviewees were familiar with historical and contemporary information about growing and using truffles in Poland. Based on respondents’ age, education, type of work, and gender we attempted to identify whether these elements were associated with the state of knowledge about truffles. The results indicated that younger foresters were better informed about the presence of truffles in Poland and also about their use in the past in Polish cuisine. Environmental education was an important source of knowledge about truffle harvesting and the soils that are conducive to truffle development. Foresters who have provided forest ecology education and who are 36–65 years of age generally possessed better knowledge about truffles than other age cohorts. More than 30% of respondents expressed interest in educational courses to improve their knowledge of truffles. The results point to the need for forestry education concerning truffles and indicate the need for fostering sustainable agroforestry-centered initiatives disseminating this knowledge to the public.

scholarly journals Chinese views on nuclear weapons: Evidence from an online survey

2021 ◽  
Vol 8 (3) ◽  
pp. 205316802110328
Author(s):  
Naomi Egel ◽  
R. Lincoln Hines
Keyword(s):  
Nuclear Weapons ◽  
Text Analysis ◽  
Online Survey ◽  
Public Attitudes ◽  
Age Groups ◽  
Computer Assisted ◽  
The Public ◽  
Self Defense ◽  
Public Views ◽  
Chinese Public

What are Chinese public attitudes regarding nuclear weapons? Although scholars have studied Chinese elites’ views on nuclear weapons, surprisingly little is known about the views of China’s public. To understand Chinese public views on nuclear weapons, we conduct an online survey ( N = 1066) of Chinese respondents. This is, to our knowledge, the first survey of Chinese public attitudes towards nuclear weapons. We find that although Chinese citizens view the possession of nuclear weapons as important for their country’s security, they strongly oppose the use of nuclear weapons under any circumstances. We also provide respondents an opportunity to describe their views on nuclear weapons in their own words. Using computer-assisted text analysis, we assess patterns in these open-ended responses and compare across age groups. We find that younger respondents emphasize non-material factors such as having a greater voice internationally, whereas older respondents emphasize self-defense. Overall, this analysis sheds light on the public attitudes that may shape China’s evolving approach to nuclear weapons.

scholarly journals Hydrodynamic constraints on the energy efficiency of droplet electricity generators

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Antoine Riaud ◽  
Cui Wang ◽  
Jia Zhou ◽  
Wanghuai Xu ◽  
Zuankai Wang
Keyword(s):  
Energy Efficiency ◽  
Kinetic Energy ◽  
Total Energy ◽  
Viscous Dissipation ◽  
Shear Force ◽  
Mechanical Energy ◽  
Electric Energy ◽  
The Past ◽  
Viscous Shear ◽  
Impingement Velocity

AbstractElectric energy generation from falling droplets has seen a hundred-fold rise in efficiency over the past few years. However, even these newest devices can only extract a small portion of the droplet energy. In this paper, we theoretically investigate the contributions of hydrodynamic and electric losses in limiting the efficiency of droplet electricity generators (DEG). We restrict our analysis to cases where the droplet contacts the electrode at maximum spread, which was observed to maximize the DEG efficiency. Herein, the electro-mechanical energy conversion occurs during the recoil that immediately follows droplet impact. We then identify three limits on existing droplet electric generators: (i) the impingement velocity is limited in order to maintain the droplet integrity; (ii) much of droplet mechanical energy is squandered in overcoming viscous shear force with the substrate; (iii) insufficient electrical charge of the substrate. Of all these effects, we found that up to 83% of the total energy available was lost by viscous dissipation during spreading. Minimizing this loss by using cascaded DEG devices to reduce the droplet kinetic energy may increase future devices efficiency beyond 10%.

Study of power transformer loading in rural power supply systems

2021 ◽  
Vol 13 (4) ◽  
pp. 282-289
Author(s):  
I. V. Naumov ◽  
D. N. Karamov ◽  
A. N. Tretyakov ◽  
M. A. Yakupova ◽  
E. S. Fedorinovа
Keyword(s):  
Energy Efficiency ◽  
Power Supply ◽  
Rural Areas ◽  
Power Transformer ◽  
Electric Energy ◽  
Power Transformers ◽  
Electric Networks ◽  
Load Factors ◽  
Optimal Load ◽  
Supply Systems

The purpose of this study is to study the effect of loading power transformers (PT) in their continuous use on their energy efficiency on a real-life example of existing rural electric networks. It is noted that the vast majority of PT in rural areas have a very low load factor, which leads to an increase in specific losses of electric energy when this is transmitted to various consumers. It is planned to optimize the existing synchronized power supply systems in rural areas by creating new power supply projects in such a way as to integrate existing power sources and ensure the most efficient loading of power transformers for the subsequent transfer of these systems to isolated ones that receive power from distributed generation facilities. As an example, we use data from an electric grid company on loading power transformers in one of the districts of the Irkutsk region. Issues related to the determination of electric energy losses in rural PT at different numerical values of their load factors are considered. A computing device was developed using modern programming tools in the MATLAB system, which has been used to calculate and plot the dependence of power losses in transformers of various capacities on the actual and recommended load factors, as well as the dependence of specific losses during the transit of 1 kVA of power through a power transformer at the actual, recommended and optimal load factors. The analysis of specific losses of electric energy at the actual, recommended and optimal load factors of PT is made. Based on the analysis, the intervals of optimal load factors for different rated power of PT of rural distribution electric networks are proposed. It is noted that to increase the energy efficiency of PT, it is necessary to reduce idling losses by increasing the load of these transformers, which can be achieved by reducing the number of transformers while changing the configuration of 0.38 kV distribution networks.

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