Scientific foundations of the development and optimization of fuel-and-energy balances

Documents

Order by : Name | Date | Hits | № journals | [ Descendent ]

Malyarenko, О.Ye., Cand. Sci. (Eng.), Senior Researcher, Maystrenko, N.Yu., Kuts, H.О.,  Cand. Sci. (Eng.), Senior Researcher Prediction needs economy in energy resources taking into account the demand for energy-intensive export-oriented products Malyarenko, О.Ye., Cand. Sci. (Eng.), Senior Researcher, Maystrenko, N.Yu., Kuts, H.О., Cand. Sci. (Eng.), Senior Researcher Prediction needs economy in energy resources taking into account the demand for energy-intensive export-oriented products

hot!
Board № (full): 4 (43) 2015 year
Filesize: 1.45 MB
Downloads: 4558
It was provided the methodological approach and mathematical model for predicting levels of energy consumption taking into account demand for energy-intensive products. It was analyzed energy consumption for exports for 2010-2012 and changing trends of indicators of output, exports, and energy costs for production of ferrous metals and sunflower oil.

To determine the volume of export or import of energy resources as a result of export-import of certain types of products, and to compare these volumes and assess the feasibility of these operations in terms of power factor the calculation algorithms were proposed. It was assessed expected FER (fuel and energy resources) volumes exported from the country with exported products and their share of total energy consumption in production.
Evidently, increase in cast iron smelting and yield of sunflower as the main export products, will not save the economy of Ukraine; it is required substantial technological modernization, which will create new industries, demand for products in the world markets, will be consistently high in conditions of the third industrial revolution.

Key words: consumption volumes, export of energy resources, energy-intensity of production, expected consumption levels.

Bilan T. R., Kaplin M. I. Security aspects of the balance of carbonaceous fuels under conditions of establishing the new fuel supply schemes in Ukraine Bilan T. R., Kaplin M. I. Security aspects of the balance of carbonaceous fuels under conditions of establishing the new fuel supply schemes in Ukraine

hot!
Board № (full): 4 (47) 2016 year
Filesize: 1.93 MB
Downloads: 4543
We give an estimate of the state of energy security at the supply of carbonaceous on the basis of representation of the fuel supply system in a three-fuel economic-and-mathematical model of the production type. We present results of calculations of the gas, coal, oil and oil-product flows and the corresponding levels of energy security criteria under conditions of substantial reformation of the traditional fuel supply schemes of our country.
It is shown that taking into account the restrictions of energy security at the stage of determining the amounts of fuel incomes can generate contradictory, from the viewpoint economic expediency, supply schemes.

Keywords: fuel supply system, energy security, coal, natural gas, production model.

Bilan Т.R. A balance-optimization model for determining the volume of coal production and import with regard for the influence of reconstruction and modernization on the technical and economic characteristics of functioning of coal mining enterprises Bilan Т.R. A balance-optimization model for determining the volume of coal production and import with regard for the influence of reconstruction and modernization on the technical and economic characteristics of functioning of coal mining enterprises

hot!
Board № (full): 4 (51) 2017 year
Filesize: 2.74 MB
Downloads: 2414

We have developed the structure of a balance-optimization model for determining the volumes of coal production and import with regard for the increase in industry's competitiveness by reducing the prime cost of coal mining at state-owned enterprises after carrying out their reconstruction and modernization. The developed model takes into account the simultaneous consumption of separate coal grades under conditions of the limited possibilities of domestic coal mining and limited capacity of Ukrainian seaports. The implementations of balance of the supply and consumption of coal products is carried out through its import.

Keywords: balance-optimization model, coal, import, production, reconstruction, modernization.

Bilan T.R., Makarov V.M., Kaplin M.I. Prediction of the levels of development of coal industry with regard for risks and critical phenomena in the structure of its productive potential in the global coal market Bilan T.R., Makarov V.M., Kaplin M.I. Prediction of the levels of development of coal industry with regard for risks and critical phenomena in the structure of its productive potential in the global coal market

hot!
Board № (full): 1 (56) 2019 year
Filesize: 396.8 kB
Downloads: 260
One of the main directions of increasing the level of energy security of Ukraine lies in the growing role of domestic coal industry in meeting the needs of economy in energy resources. For this purpose, it is necessary to create conditions that will enhance the efficiency of operation of the industry and its competitiveness as well as ensure the economic feasibility of investing.
Based on analysis of the state and prospects of the development of coal-industry enterprises, which are currently on the temporarily occupied territories of Donets’k and Luhans’k regions, we calculated the predictive volumes of coal production in Ukraine up to 2040. We also proposed scenarios of the coal-industry development with regard for risks and critical phenomena in the structure of its productive potential.
In order to solve the problem of determining the optimal volumes and directions of coal supply in a competitive environment, we propose a balance-optimization model of coal supply of the country, which takes into account the differentiation of coal products by grades and technological functions, as well as increasing the competitiveness of coal industry through the implementation of measures for the modernization and reconstruction of existing enterprises.
According to the results of calculations, we obtained the economically substantiated volumes of own mining and import of coal by grades and technological purposes under conditions of the world market and formulated the priority directions of providing country's economy with coal products. The main directions here are: modernization of existing and construction of new enterprises, restoration of the work of brown-coal complex, and development of transport infrastructure.
Keywords: coal industry, mining, prediction, world market, energy security.

Bilodid V. D. Thermal Energy in Ukraine in 2005–2013 Bilodid V. D. Thermal Energy in Ukraine in 2005–2013

hot!
Board № (full): 1 (40) 2015 year
Filesize: 1.34 MB
Downloads: 5652
Based on the analysis of statistics of thermal energy production, supply and consumption in Ukraine in 2005–2013 and using different statistical reporting forms, the real figures of thermal energy production and consumption have been substantiated. In addition, the volumes of heat production by individual low-power heat generators are substantiated on the basis of statistics of the sale of fuel (natural gas, coal, firewood, peat, etc.) to population, consumption of other energy resources (not taken into statistical account fuel (shadow fuel), biogas, solar power, household wastes, etc.) and also the use of electric power for obtaining heat at enterprises, in utilities sector and households.
The main thermal energy sources in the centralized heat supply system still remain electric power plants, heating boiler plants and various heat utilization processes.The percentage of heat supply provided by these sources in the total volume of heat consumption covered by statistics constantly decreases and lies in the interval from 67% (in 2005) to 51% (in 2013). It was shown that in the accounting period heat pump systems began to play a significant role in heat supply; they accounted for 3.5% of thermal energy produced in 2005 and up to 20% in 2013.
The volumes of thermal energy produced by decentralized systems were also substantiated. It should be noted that the percentage of this energy in 2013 amounted to almost 50% of the total thermal energy consumed by customers.
In future the replacement of natural gas boilers with heat pump systems will make it possible to materially improve the heat supply and change the energy balance in the direction of reducing the natural gas consumption.

Keywords: Heat supply statistics, profile of thermal energy production, thermal energy consumption, heat pump systems, boiler plants.
<< Start < Prev 1 2 3 4 5 6 Next > End >>
Page 1 of 6