Systems analysis of energy-saving technologies and optimization of power-consuming industries

Documents

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

Evtukhova T. A. Energy saving management system structural-and-functional features construction for HCI of Ukraine Evtukhova T. A. Energy saving management system structural-and-functional features construction for HCI of Ukraine

hot!
Board № (full): 2 (22) 2010 year
Filesize: 474.96 kB
Downloads: 5104
On the base of theses of the hierarchical multilevel systems theory and large systems control theory the structurally-functional diagram of the energy-savings management system for HCI of Ukraine is developed which takes into account the subsystem of consumption of housing-and-communal services as inalienable constituent of the hierarchical management system, and at all hierarchical levels of which the administratively-organizational, energy-economical, energy-technological and energy-ecological management stratification branches are determined. It is discovered that after its integral structurally-functional properties the problem of the energy-savings management in HCI of Ukraine relates to the class of programmatic-adaptive extreme control problems, where to the primary purpose of management, which is energy-saving, the another extreme purpose is added – the achievement of result by economically expedient from the organizationally-technical point of view measures. The original algorithm of the energy-savin
gs extreme management in HCI of Ukraine problem decision is offered as the problem of the mathematical programming under the use of the problem decomposition on the series of more simple procedures and the further piece-linear approximation of technological and management parameters.

Keywords: housing-and-communal industry, hierarchical energy-savings management system, structurally-functional diagrams, management stratification branches.

Ivanenko N.P., Denisov V.A. Mathematical simulation and comparative assessment of the prime cost of electric energy, produced by generating and accumulating technologies Ivanenko N.P., Denisov V.A. Mathematical simulation and comparative assessment of the prime cost of electric energy, produced by generating and accumulating technologies

hot!
Board № (full): 4 (55) 2018 year
Filesize: 496.12 kB
Downloads: 669

The ability to accumulate electricity on an industrial scale is beneficial for all market participants: producers, suppliers, consumers, and regulators. Analytical reports from research organizations GTM Research and ESA's U.S. Energy Storage Monitor give information on the record volumes of investment to projects of the designing and building of plants for energy storage. In developed countries, energy saving technologies are coming to the stage of commercial use.
All this determines the relevance of solving the problem of calculation in real time of the load distribution of generating and accumulating capacities of the power system, which minimizes the prime cost of electricity produced at each time point under the load tracking mode.
As the basis for choosing the best solution of this problem, one can take the prime cost matrix of energy that is generated and supplied by various generating plants, when the power system components operate under modes other than the base load mode. Just this stage is described in the present paper.
The presence of such a prime cost matrix allows formulating and solving the problem of optimal coverage of the loading schedule at the second stage.
Based on the obtained solution, a database of generating and accumulating capacities for each value of the consumption schedule can be created.

Keywords: cost matrix, mathematical simulation, energy sector, energy storage.

Ageeva T. P. Problems of improvement of fuel and energy utilization efficiency in municipal economy and public service of Ukrainian population Ageeva T. P. Problems of improvement of fuel and energy utilization efficiency in municipal economy and public service of Ukrainian population

hot!
Board № (full): 1 (6) 2002 year
Filesize: 545.37 kB
Downloads: 5074

A structural analysis of energy consumption in economy sphere in 1990-2000, which includes residential sector, municipal economy and public sector (education, culture, health service). The ways of fuel economy (the non-centralization consumers), electrical and thermal energy and indexes for a complex evaluation of efficiency of energy saving are considered.

Keywords: energy saving, energy consumption, fuel, electrical and thermal energy, residential, municipal and household needs of the population.

Bilodid V.D. Determination of the efficiency of electric power production by nuclear power plants using the methodology of full energy costs. Part 1. Energy costs for construction Bilodid V.D. Determination of the efficiency of electric power production by nuclear power plants using the methodology of full energy costs. Part 1. Energy costs for construction

hot!
Board № (full): 2 (53) 2018 year
Filesize: 733.27 kB
Downloads: 1849

The results of a study on the determination of the efficiency of electric power generation by nuclear power plants with VVER-1000 reactors based on the full energy cost methodology are presented. The methodology for determining the effectiveness of technology using this methodology was published earlier. Part 1 defines the total energy costs for the construction of nuclear power plants. The main indicators of the energy intensity of the construction of nuclear power plants with VVER-1000 reactors are determined, among which: the specific energy intensity of the NPP unit construction is 246 GJ / kW provided that the policy of National Bank of Ukraine is invariable, and the average hryvnia inflation is 6% /yr, or it is 140 GJ/kW at the hryvnia rate corresponding to the predicted parity of purchasing power of US dollar. The specific energy intensity of a large nuclear power plant is 220 or 125 GJ/kW for the Same two variants. The obtained results will allow to estimate the NPP energy efficiency by the methodology of determining the total energy costs.
In Part 2, calculations will be made on the energy costs for nuclear fuel. Part 3 provides coverage of energy costs for NPP operation for 40 years, the costs of its elimination and the determination of the final efficiency of electricity generation at nuclear power plants. Parts 2 and 3 will be published in the next issue of the collection.

Keywords: nuclear power plant, full energy costs, efficiency of power generation.

Bilodid V.D. Determination of the efficiency of electric power production by nuclear power plants using the methodology of full energy costs. Part 2. Energy costs for nuclear fuel Bilodid V.D. Determination of the efficiency of electric power production by nuclear power plants using the methodology of full energy costs. Part 2. Energy costs for nuclear fuel

hot!
Board № (full): 3 (54) 2018 year
Filesize: 391.29 kB
Downloads: 1425

We present the results of determination of the efficiency of electric energy generation by nuclear power plants with WWER-1000 reactors according to the methodology of full energy expenditures. The methodology for determining the efficiency of technologies was published earlier. In part 1 of the article, which was published in the 2nd issue of "The Problems of General Energy" for 2018, we give the results of calculations of the full energy costs for the construction of nuclear power plants. Part 2 presents the results of calculations of energy expenditure for obtaining nuclear fuel, which is necessary for the operation of NPP during its lifetime. It is shown that the full energy costs of nuclear fuel for an NPP unit with WWER-1000 reactors during 40 years of operation under the option of invariance of policy of the NBU of Ukraine regarding exchange rates are set at 18.6 PJ; the same costs at the rate of hryvnia in terms of the parity of purchasing power of US dollar are determined in the amount of 5.0 PJ.
Part 3 envisions the coverage of questions on energy costs for NPP operation, costs for its decommissioning, and determination of the final efficiency of power generation at NPPs. Part 3 will be published in the following issues of collection.

Keywords: nuclear power plant, full energy costs, efficiency of power generation, energy costs for nuclear fuel.

<< Start < Prev 1 2 3 4 5 6 Next > End >>
Page 1 of 6