scholarly journals Prospects for the use of a microwave electromagnetic field for the creation of an ecological technology for the production of firing materials and the development of microwave energy

2021 ◽  
Vol 288 ◽  
pp. 01071
Author(s):  
Irina Zhenzhurist
Keyword(s):  
Electromagnetic Field ◽  
High Speed ◽  
Materials Science ◽  
Raw Materials ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Microwave Beam ◽  
Inorganic Substances ◽  
Increased Strength ◽  
High Level

The article considers the causes of environmental problems in the energy sector. The increased demand for energy resources and the increasing shortage of natural fuels are leading to the search for renewable energy sources. The prospects of energy transmission by microwave radiation without wires as an alternative to traditional energy sources are considered. The article provides information on the results of research on obtaining a high level of energy transfer by a microwave beam from a geostationary orbit to the earth's surface in the near future, as well as developments in the field of creating a solar space power plant (SSP). The results of research on the sintering of inorganic substances in an electromagnetic field are presented, the prospects for this direction in materials science are considered. The results of sintering natural raw materials in a microwave field are considered. The formation of nanoscale phases in sintered compositions has been established. The effect of a low-melting mineralizing additive on the sintering process is shown. The increased strength characteristics of the samples obtained by high-speed firing in the microwave electromagnetic field, the prospects for developments in this direction for various types of materials are noted.

scholarly journals Sustainable Development and Renewable Energy Sectors: Selected Indicators in European Union and Poland

2018 ◽  
Vol 18(33) (4) ◽  
pp. 250-258
Author(s):  
Anna Klepacka
Keyword(s):  
European Union ◽  
Renewable Energy ◽  
Raw Materials ◽  
Renewable Energy Sources ◽  
Main Tool ◽  
Heat Pumps ◽  
Solar Heating ◽  
Energy Sources ◽  
The European Union ◽  
European Union Countries

The aim of this article was to show the position of Poland in the renewable energy subsectors among the European Union countries. The research covered the areas of biomass, solar heating and heat pumps, showing the degree of their utilization, power required to drive the system and their production in 2016. The provided information was supplemented with a revenues per employee in thousand euros in chosen subsectors of renewable energy sources in the year 2016. The main tool for carrying out the set objective was the use of descriptive and comparative methods. The results of the survey demonstrated Poland’s prominent place in the sector of liquid biofuels (1st place in EU), thanks to the significant supply of raw materials as well as development perspectives in solar energy, which is confirmed by the world's statistics indicating a record number of photovoltaic installations fitted (PV).

Application of Task-Based Language Teaching in University Education of Functional Materials Specialty English

2012 ◽  
Vol 427 ◽  
pp. 243-247
Author(s):  
Ming Ming Cheng ◽  
Fei Wang ◽  
Li Juan Wang
Keyword(s):  
High Speed ◽  
Raw Materials ◽  
Language Teaching ◽  
Functional Materials ◽  
Learning By Doing ◽  
University Education ◽  
Functional Material ◽  
Professional Skills ◽  
English Teaching ◽  
High Level

Functional material specialty English teaching aims at fostering technical personnel with a high level of English proficiency; however, the goal is not achieved due to the boring teaching mode of imparting knowledge. In the paper, task-based language teaching, which is student-centered and characterized by learning by doing and using, is applied to the functional material specialty English to arouse initiatives of students through completing tasks in authentic situations, thus developing their English comprehensive abilities and professional skills. The task is to prepare sepiolite nanofibers by means of the high-speed air current superfine technique using natural sepiolite samples as raw materials and then make a presentation to describe the whole process of the experiment in English in the class. Teachers should monitor the progress of the task to help students complete the task successfully and develop a sense of responsibility to cultivate their practical ability of language using. Through the task, English comprehensive abilities and professional skills of students are improved, and specialty English teaching abilities of teachers is developed.

scholarly journals PENGARUH KOMPOSISI BIODIESEL TERHADAP KINERJA MESIN DAN EMISI GAS BUANG

2016 ◽  
Vol 11 (3) ◽  
pp. 381
Author(s):  
Martin Djamin ◽  
Soni S.Wirawan
Keyword(s):  
Renewable Energy ◽  
Energy Security ◽  
Energy Production ◽  
Fossil Fuels ◽  
Raw Materials ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Short Term ◽  
Renewable Fuel ◽  
Promising Solution

Renewable energy sources make a distinction as a promising solution towardssustainable and environmentally friendly energy production. Developing biodiesel isvery important for Indonesia due to various reasons including the abundanceavailability of the raw materials; an alternative renewable fuel to strengthen thecountry energy security and it is a solution to improve local air quality in severalIndonesian major cities. Biodiesel offers a realistic short-term alternative tosubstitute fossil fuels, and it will also be a necessary addition to the emissionfree technology for the future. This paper is intended to provide assessment andinvestigation of the use of different composition of biodiesel and its impact to theenvironment.Key words: Energy security, renewable energy, Biodiesel.

scholarly journals Remote Microgrids for Energy Access in Indonesia—Part I: Scaling and Sustainability Challenges and A Technology Outlook

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6643
Author(s):  
Ilman Sulaeman ◽  
Desmon Petrus Simatupang ◽  
Brandon Kristiano Noya ◽  
Amalia Suryani ◽  
Niek Moonen ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Social Engagement ◽  
Practical Knowledge ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Preliminary Survey ◽  
Energy Access ◽  
Sustainability Challenges ◽  
High Level

Although Indonesia’s electrification ratio reached 99.2% in 2020, it has shown stagnating electrification since 2018. This is because most of the remaining areas that need to be electrified are remote and have unique characteristics that hamper implementation of microgrids for providing energy access. Furthermore, not only the deployment but also the long-term sustainability of microgrids is crucial for ensuring continuity of energy access. This paper aims to investigate the scaling and sustainability challenges of remote microgrid development in Indonesia by analyzing microgrids in the Maluku and North Maluku provinces. This study is a two-part publication; the first part focuses on identifying challenges in Indonesia’s remote microgrid development, while the second part focuses on potential technology solutions. In the first part, an assessment of energy access within a multi-tier framework was conducted, which was then analyzed using a multi-dimensional (institutional, social, technical, economic, environmental, and policy) approach adapted from the literature. The framework was expanded by mapping the challenges onto specific phases of the microgrid development, which is intended to be helpful for the parties involved in specific phases. It is shown that the challenges related to unclear land status, lack of social engagement, preliminary survey, technical and practical knowledge, and O&M procedures—especially for remote microgrids with renewable energy sources—are the most prominent issues. Additionally, issues caused by electrical events and environmental conditions such as relatively humid and high-temperatures, and uncontrolled vegetation, rodents, insects, and lizards are often found. Furthermore, a high-level technological outlook to address some of these issues is presented.

Renewable Energy in Italy

2011 ◽  
pp. 68-86
Author(s):  
Stefano Fanetti
Keyword(s):  
Renewable Energy ◽  
Alternative Energy ◽  
Raw Materials ◽  
Renewable Energy Sources ◽  
Geographic Location ◽  
Economic Incentives ◽  
Energy Sources ◽  
Alternative Energy Sources ◽  
Regulatory Changes ◽  
Oil And Natural Gas

Italy is a country where the energy supply depends largely on imported raw materials (such as oil and natural gas). The favorable geographic location could encourage the development of renewable energy sources; nevertheless, the growth of alternative energy sources is slow. What are the reasons? This question will be dealt in this chapter, considering three different aspects of the issue: the economic incentives for renewable energies, the problematic process of authorization of the facilities and the local communities’ opposition to new plants. Besides the analysis of these issues, the aim of this paper is to identify possible solutions, taking into account the relevant legislative and regulatory changes that, at national and Community level, have affected and are affecting the field of renewable energy.

scholarly journals ANALYSIS OF ASH CONTENT IN COMPOSITE BIOMASS FUELS

2017 ◽  
Vol 3 ◽  
pp. 31
Author(s):  
Edgars Čubars ◽  
Liena Poiša
Keyword(s):  
Raw Materials ◽  
Combustion Process ◽  
Optimal Level ◽  
Ash Content ◽  
Biomass Combustion ◽  
Biomass Fuels ◽  
Fuel Production ◽  
Inorganic Substances ◽  
Composite Fuel ◽  
High Level

The study reveals research of ash content in different composite biomass fuels. It contains analysis of samples obtained from various local Latvian biomass types, i.e. reed, wood, hemp, flax shives and peat, by combining them in different proportions. Ash is a by-product derived from combustion process consisting mostly of inorganic substances that are left after a fuel is burnt. High level of ash content in a fuel is undesirable because it causes problems in automation of biomass combustion process. Previous studies carried out by the author show that average ash content in reeds is 2%, which is a high index comparing with wood where ash content is approximately 0,5-1%. Thus, the high ash content in reeds my cause problems in reed combustion in solid fuel boilers. Besides, it is not possible to ensure permanent reed collection that would ensure continuous reed fuel generating process all year long. In order to reduce the ash content to the optimal level and to diversify raw materials necessary for biomass fuel generating process, the author suggests using composite fuels by combining different biomass types. The study contains optimal combining proportions of different biomass types for composite fuel production basing on the ash content in them.

scholarly journals Conceptual aspects of improving the energy efficiency of agricultural complex in conditions of sustainable development

2021 ◽  
pp. 182-188
Author(s):  
O. Drebot ◽  
O. Bendasyuk ◽  
M. Vysochanska ◽  
A. Schavinska
Keyword(s):  
Agricultural Sector ◽  
Raw Materials ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Industrial Complex ◽  
Local Energy ◽  
Energy Complex ◽  
Current State ◽  
New Energy ◽  
Complex Development

The article identifies and analyzes the relevance of the formation of new energy opportunities for the agro-industrial complex (AIC), which will stabilize energy consumption. Theoretical and methodological bases of organizational and economic aspects of realization of bioenergy potential of agrarian sector of economy are analyzed and investigated. Possibilities of biofuel and energy production, possibility of using different types of local energy sources for energy supply are estimated. The problem in the field of regulation and development of the fuel and energy complex and the inconsistency of transformation measures in the energy sector with the methods of reforming the energy industry, agriculture, services and utilities of Ukraine are analyzed. The state, tendencies and strategy of energy complex development are analyzed; the forecast estimation of energy possibility of introduction of new stages of application of renewable energy sources in agriculture is executed. The analysis of the current state of the energy balance of the agricultural sector is carried out, and the topical issues of imperfection of the bioenergy and RES production process are identified. Ways to increase the economic efficiency of energy saving by increasing the capacity of biogeneration of energy, based on local energy sources, taking into account the savings in their use, as well as obtaining additional funds from the sale of electricity at a green tariff. It is recommended to improve and harmonize the production of raw materials for biofuel energy and to introduce control over the reporting of economic entities.

scholarly journals Opportunities and Barriers to the Development of Poland in the Field of Renewable Energy Sources as Compared to the European Union

2020 ◽  
Author(s):  
Robert Muszyński ◽  
Katarzyna Kocur-Bera
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Water Movement ◽  
Raw Materials ◽  
Renewable Energy Sources ◽  
Point Of View ◽  
Energy Sources ◽  
The European Union ◽  
Eu Member States ◽  
Almost All

Today, almost all of civilisation is based on energy. To a large extent, energy is being continuously acquired from non-renewable raw materials deposited in the Earth’s crust. Renewable sources provide alternative, infinite energy resources, particularly solar radiation, wind power and water movement. The Paris Agreement envisages the complete abandonment of fossil fuels by the year 2050 for all EU Member States. From a technical point of view, a complete transition to renewable energy sources (RES) is very difficult to achieve. In the case of Poland, the way to 100% RES is longer and more complex than in most EU countries. The main purpose of the conducted analysis was to thoroughly assess the possibilities for obtaining energy from inexhaustible sources as well as the benefits of various procedures in order to develop an optimal set of solutions. The aim of the presented study is to indicate the possibilities for the development of construction investments in the field of renewable energy sources that have an inseparable impact on spatial management. To achieve this aim, the method of research of the available literature and legislation was applied.

Sign in / Sign up

Export Citation Format

Share Document