scholarly journals CRITERIA FOR DESIGN AND CONSTRUCTION BIOGAS PLANT IN INDIVIDUAL FARMS

2015 ◽  
Vol 2 (158) ◽  
Author(s):  
Evgeniy Tkachenko ◽  
Sergey Ugolnikov
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Agricultural Production ◽  
Raw Materials ◽  
Practical Experience ◽  
Energy Resources ◽  
Functional Composition ◽  
Renewable Energy Resources ◽  
Modes Of Operation

Biogas – one of the promising areas of generation and use of renewable energy resources. In manycountries, farmers are considered as promising sites for the production and use of biogas. Due to the largevariations in the quantity and quality of raw materials, modalities and goals of the design of biogas plantsare not formalized and is based on practical experience of the developers. It is shown that the criticalparameters in the design of biogas digesters are a source of raw materials, the amount of energy consumedby household and accommodation. Considered criteria (power, size, equipment, modes of operation, safety,etc.), which have a decisive influence on the structure and functional composition of BSU for farms. Variantsof technological schemes of individual bioreactors, as well as the characteristics of farms that should beconsidered when designing the BSU. Rationally designed BSU improves energy efficiency andenvironmentally friendly agricultural production.

Comparison of Archimedean Screw and Normal Pump in Pumped Storage Generation Combined with Wind Power Generation

2013 ◽  
Vol 291-294 ◽  
pp. 439-444
Author(s):  
Ya Zhou Zhai ◽  
Jing Hao Ma ◽  
Masaki Mitobe ◽  
Soichiro Uehara ◽  
Shao Yan Gon ◽  
...  
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Fossil Fuel ◽  
Storage System ◽  
Wind Power Generation ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Advantages And Disadvantages ◽  
Pumped Storage

Renewable energy resources such as wind energy have a disadvantage that the quality of output power is lower than that of fossil fuel resources. To solve this problem, pumped storage power system with Archimedean screw is designed. The structure and principle of operation are introduced and the advantages and disadvantages are discussed according to the theory and the simulation. In this paper, comparison has been done by collecting and analyzing the data and simulated the system on different condition to show the differences of the two types of pumps working on the pumped storage system.

Obtaining and Using Biogas in Agricultural Production

2020 ◽  
pp. 196-221
Author(s):  
Sergey Nikolaevich Devyanin ◽  
Vladimir Anatolyevich Markov ◽  
Andrei Alexandrovich Savastenko
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Experimental Model ◽  
Agricultural Production ◽  
Theoretical Study ◽  
Raw Materials ◽  
Exhaust Gas ◽  
Renewable Energy Resources ◽  
Motor Fuels ◽  
Main Components

In recent years, an increased interest has been shown in fuels derived from renewable energy resources of animal and vegetable origin, raw materials of which are practically unlimited. The use of biofuels makes it possible not only to replace petroleum motor fuels with alternative ones, but also to improve exhaust gas toxicity indicators (as a rule, there is a marked decrease in emissions of toxic exhaust gas components). This work is devoted to the study of the possibilities of solving these problems in order to adapt diesel to biogas, a theoretical study of ways to create an experimental model of a power plant for generating electricity from biogas, a theoretical study on the processes occurring in the main components of the plant being developed and the creation of this plant.

scholarly journals Editorial Catalysts: Special Issue on “Microwave-Assisted Catalysis”

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 842
Author(s):  
Pilar Salagre ◽  
Yolanda Cesteros
Keyword(s):  
Renewable Energy ◽  
Circular Economy ◽  
Raw Materials ◽  
Energy Resources ◽  
The Sun ◽  
Renewable Energy Resources ◽  
Special Issue ◽  
Microwave Assisted ◽  
New Applications

The concept of circular economy is based on several principles, such as the use of renewable energy resources, including those obtained from the sun, wind, or water; the use of natural raw materials; the manufacturing of products avoiding the generation of wastes and pollution; keeping products and materials in use for a longer time; or giving new applications to waste [...]

scholarly journals Analytical Assessment of DC Components Generated by Renewable Energy Resources with Inverter-Based Interconnection System due to Even Harmonics

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
Marios N. Moschakis ◽  
Vasilis V. Dafopoulos ◽  
Emmanuel S. Karapidakis ◽  
Antonis G. Tsikalakis
Keyword(s):  
Renewable Energy ◽  
Power Quality ◽  
Distribution Network ◽  
Operating Conditions ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Network Systems ◽  
Analytical Assessment ◽  
Even Harmonics

This paper deals with the assessment of DC components generated by renewable energy resources with inverter-based interconnection system to the electric grid. DC injection is a critical issue related to power quality of distribution network systems with high penetration of inverter-based interconnection systems. This type of interface systems may improve the performance of the electric generation unit and affect positively or negatively the power quality of the distribution network depending on the proper or improper designation. The investigation of the various causes of DC components and the analytical assessment of their maximum levels are crucial for the proper operation of inverter-based interface systems and the limitation of DC injection. A method based on analytical calculations using a computer software has been implemented for the assessment of DC components contained on an inverter's output voltage when even harmonics are present on the network voltage. Moreover, a simulation package was used to demonstrate the existence of DC components under various conditions. It was proved by the current analysis that the amounts of DC components generated when even harmonics are present on the network voltage can be high under abnormalities on the power grid but they are not considerable under normal operating conditions.

scholarly journals Renewable energy resources in Hungary – solid biomass utilization in terms of necessity and opportunity

2010 ◽  
Vol 4 (3-4) ◽  
pp. 75-78
Author(s):  
Veronika Erős ◽  
Tamás Biró
Keyword(s):  
Renewable Energy ◽  
Rural Development ◽  
Agricultural Sector ◽  
Raw Materials ◽  
Energy Resources ◽  
Raw Material ◽  
Local Processing ◽  
Energy Sources ◽  
Renewable Energy Resources

In the 21st century a country’s success significantly depends on how it can solve the problems (supply safety, growing prices, climate change, etc.) induced by the application structure of the fossil energy sources with the means of energy saving, energy efficiency and the utilization of renewable energy resources. The utilization of renewable energy sources has positive effects on five key areas: environment protection, energy policies, fulfilment of EU expectations, agriculture and rural development and on the whole of the national economy. The bioenergy – beside fulfilling the national economic aims – it is putting up the value of the role of agriculture and rural development. The role of agriculture is multi-functional in the process. The agricultural sector has an important task in the area of bioenergy to ensure the proper quality and quantity of raw materials for the increase of bioenergy utilization. This also means new sales perspectives and opportunities for the producers. Above all this, the agricultural policy aims for the agriculture and the rural development segment to be the unambiguous winner of the new bioenergy sector and for most of the available profit to stay with the agricultural sector, with the rural players. For this reason encouraging the raw material production it wishes to encourage the producer their primary process and their local utilization. One of the fundamental objectives of the measures is that agriculture should go beyond the raw material production and take steps towards processing and utilization. The multifunctional role in the product chain might mean extra income and more added value for the producers and the active players in the process. The other objective is to promote the local utilization, the scatter of the environmentally friendly energy sources in rural areas, to change the energy is “lying on the ground unutilized” principle while local processing and promoting the utilization, to achieve a lower energy dependency and to optimize and disseminate cost efficient solutions. To realize all this means a great task and a huge challenge for the agricultural government as well as the rural societies and micro regions but might lead to a successful rural development. The range of the tools and measures to fulfil the aims might be very broad, from the regulating instruments to the various subsidies, coordination and dissemination tools. Part of the subsidy schemes are direct production-type of subsidies (the so called direct payments, for example the area based subsidies) and the other main forms are the investment-type subsidies which are for technology development, promotion of competitive production and local processing and for establishing a green energy industry. In the period of 2007-2013 the key elements of the development schemes were drafted in the frame of the New Hungary Rural Development Programme (ÚMVP) and the Environmental Energy Operational Program (KEOP). The available raw materials and the conditions are taken into consideration while designing the development schemes because a successful realization of a product chain means the assurance of the inputs and outputs. The starting point of determining the development direction is the principle of an operation which is sustainable and economical on the long run. In addition such developments are considered reasonable which are viable on medium and long term and bring numerous rural development, environmental and societal returns.

scholarly journals Energy, Bioeconomy, Climate Changes and Environment Nexus

2019 ◽  
Vol 23 (3) ◽  
pp. 370-392
Author(s):  
Dagnija Blumberga ◽  
Bin Chen ◽  
Alise Ozarska ◽  
Zane Indzere ◽  
Dace Lauka
Keyword(s):  
Climate Change ◽  
Energy Efficiency ◽  
Renewable Energy ◽  
Climate Changes ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Special Issue ◽  
Research Papers ◽  
Energy Efficiency Policy ◽  
Wide Range

Abstract Overview of research papers of International conference of Environmental and Climate Technologies (CONECT 2019) illustrates the wide range of topics covered in the issue. All overviewed articles are published in the Special Issue (Part I and Part II) of the Journal of Environmental and Climate Technologies. Scientific articles are divided into 5 thematic clusters: renewable energy resources, energy efficiency, policy and policy tools, waste management and bioeconomy that charts energy, bioeconomy, climate change and environment nexus.

scholarly journals СПОСОБИ СТИМУЛЮВАННЯ ЗБЕРЕЖЕННЯ ТЕПЛА ТА ЕНЕРГІЇ В УКРАЇНІ Й ІНШИХ КРАЇНАХ

2020 ◽  
Vol 138 (5) ◽  
pp. 43-52
Author(s):  
О. О. Романюк ◽  
В. В. Рябенко
Keyword(s):  
Energy Efficiency ◽  
Energy Conservation ◽  
Energy Saving ◽  
Energy Use ◽  
Electric Energy ◽  
District Heating ◽  
Practical Experience ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Resource Saving

Consider ways to stimulate heat and energy conservation in Ukraine and other countries, based on an analysis of the legal framework and practical experience. Review and analysis of the Energy Strategy of Ukraine for the period up to 2035 “Security, Energy Efficiency, Competitiveness”, Laws of Ukraine “On Energy Saving”, “On Energy Efficiency Fund”. Review and analysis of the practical experience of applying different ways of stimulating energy saving, improving the efficiency of use of fuel and energy resources by economic entities, consumers in the housing sector in Ukraine and other countries. The ways of stimulation of heat and energy conservation in Ukraine are proposed, which envisage both the system of financing of projects of resource saving and ways of informing consumers about the energy efficiency of new equipment (through marking), buildings, households. The main directions to be developed for efficient management of energy efficiency projects, in particular, the efficient functioning of district heating; combined production of thermal and electric energy; use of local renewable energy resources; introduction of resource-saving eco-friendly technologies. The legislation, which provides financial and informational ways of stimulating energy and heat conservation, as well as ways of financially filling the energy efficiency fund in Ukraine and the corresponding funds in other countries, is considered. The operation of the Energy Efficiency Fund is necessary for the provision of tax benefits, subsidies (targeted state and others), irrevocable appropriations for various types of energy conservation works, for the introduction of new types of energy saving equipment and technologies.

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