scholarly journals Analysis of the electric energy consumption components for mine train traction

2019 ◽  
Vol 294 ◽  
pp. 01001 ◽  
Author(s):  
Serhii Arpul ◽  
Viktor Artemchuk ◽  
Mykola Babyak ◽  
Viacheslav Vasilyev ◽  
Hennadii Hetman ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Intensity ◽  
Electric Energy ◽  
Rolling Stock ◽  
List Type ◽  
Opencast Mining ◽  
Study Results ◽  
Transportation Process ◽  
The Cost

The paper considers the issues of reducing the energy intensity of transportation at opencast mining enterprises, the relevance of which has now increased due to the rise in the cost of fuel and energy resources. It presents the study results concerning the cost structure of the electricity consumed by electric mine transport, which form the basis for the development of technical and operational measures to reduce the energy intensity of the transportation process. It is shown that the work to reduce the electricity consumption for mined rock transportation should be aimed at: Reduction of losses in the power circuits of the traction rolling stock due to the use of more advanced electric rolling stock and regulation of the degree of utilization of the installed traction power; Introduction of new contact materials for electrical circuits with the lowest possible resistivity, including for current collector plates; Introduction of measures to reduce energy consumption for power supply of auxiliary circuits; Development and implementation of rational train control techniques. The introduction of energy-saving measures should include the development and application of effective methods for calculating individual norms of energy consumption and incentives for energy saving of the employees involved in the organization of the transportation process.

Modernization of Water Treatment System at Agricultural Enterprises Due to Introduction of Solar Energy

2020 ◽  
Vol 67 (1) ◽  
pp. 142-147
Author(s):  
Alina A. Aleksandrova ◽  
Maksim S. Zhuzhin ◽  
Yuliya M. Dulepova
Keyword(s):  
Mathematical Model ◽  
Water Treatment ◽  
Solar Energy ◽  
Energy Saving ◽  
Electric Energy ◽  
Solar Water Heater ◽  
Water Heater ◽  
Agricultural Enterprises ◽  
Solar Water ◽  
The Cost

Energy saving today is an integral part of the development strategy of agricultural organizations. Considerable attention is paid to the modernization and automation of technological processes in agricultural enterprises, which can improve the quality of work and reduce the cost of production. The direction of modernization is to reduce the consumption of electric energy by improving the water treatment system in livestock complexes. (Research purpose) The research purpose is to determine the potential of solar energy used in the Nizhny Novgorod region and to determine the possibility of its use for water heating in livestock complexes and to consider the cost-effectiveness of using a device to heat water through solar energy. (Materials and methods) Authors used an improved algorithm of Pixer and Laszlo, applied in the NASA project «Surface meteorology and Energy», which allows to calculate the optimal angle of inclination of the device for heating water. (Results and discussion) Designed a mock-up of a livestock complex with a solar water heater installed on the roof, protected by patent for invention No. 2672656. A mathematical model was designed experimentally to predict the results of the plant operation in non-described modes. (Conclusions) The article reveales the optimal capacity of the circulation pump. Authors have created a mathematical model of the device that allows to predict the water heating in a certain period of time. The article presents the calculations on the energy and economic efficiency of using a solar water heater. An electric energy saving of about 30 percent, in the economic equivalent of 35 percent.

scholarly journals Design Process of Energy Effective Shredding Machines for Biomass Treatment

10.14311/1622 ◽  
2012 ◽  
Vol 52 (5) ◽  
Author(s):  
Juraj Beniak ◽  
Juraj Ondruška ◽  
Viliam Čačko
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Design Process ◽  
Electric Energy ◽  
Point Of View ◽  
Processed Material ◽  
Material Saving

The shredding process has not been sufficiently investigated for the design of better, energy and material saving shredding machines. In connection with present-day concern about the environment, ecology, energy saving, recycling, and finding new sources of energy, we need to look at the design of shredding machinery, the efficiency of the machines that we using, and ways of improving them to save electric energy for their operation. This paper deals with sizing and designing shredding machines from the point of view of energy consumption and optimization for specific types of processed material.

Analysis of Electric Energy Consumption Patterns: A Case Study of a Real Life Office Building

2013 ◽  
Vol 330 ◽  
pp. 158-162 ◽  
Author(s):  
Jin Soo Han ◽  
Youn Kwae Jeong ◽  
Il Woo Lee
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Real Life ◽  
Electric Energy ◽  
Consumption Patterns ◽  
Office Building ◽  
Commercial Building ◽  
Total Energy Consumption ◽  
Electric Energy Consumption ◽  
Energy Consumption Patterns

Electric energy consumption shares a great portion of commercial building energy. Electric energy saving is essential to reduce total energy consumption in commercial buildings. To draw energy saving methods, it is necessary to monitor real energy consumption patterns and analyze the results. We monitor the lighting and non-lighting energy consumption of eleven zones in a real working office building every fifteen minutes during eleven months. We observe and analyze the monthly and daily energy consumption patterns of all zones and draw several feasible energy saving methods. Moreover, the lighting and occupancy are monitored simultaneously in detail to investigate the unnecessary energy consumption. It shows the possibility of a great amount of energy saving. Because we analyze the energy consumption patterns in all zones, the drawn energy saving methods are applicable to the current building with some added infrastructure and expandable to other similar office buildings. Our result is expected to contribute to reducing the energy consumption in buildings.

scholarly journals ECONOMIC EFFICIENCY, ENERGY CONSUMPTION AND SUSTAINABLE DEVELOPMENT / EKONOMINIS EFEKTYVUMAS, ENERGIJOS VARTOJIMAS IR SUBALANSUOTA PLĖTRA

2011 ◽  
Vol 12 (2) ◽  
pp. 353-374 ◽  
Author(s):  
Štefan Bojnec ◽  
Drago Papler
Keyword(s):  
Economic Development ◽  
Energy Consumption ◽  
Energy Saving ◽  
Economic Efficiency ◽  
Energy Intensity ◽  
Driving Forces ◽  
Management Strategies ◽  
Value Added ◽  
Sustainable Economic Development ◽  
Technological Intensity

This paper analyzes structural indicators of economic efficiency and energy intensity consumption as determinants of sustainable economic development for the selected 33 European countries. The correlation, regression and multivariate factor analyses are applied to test the associations between the selected structural variables of energy intensity consumption, economic efficiency, and the main driving forces behind these developments. Economic efficiency is positively associated with expenditures on research and development (R&D) and a greater technological intensity of exports, while at the same time the economic efficiency of R&D expenditures and technological intensity of exports reduce the energy intensity consumption of the economy. The results suggest that management strategies and policies directed towards R&D expenditures, human capital investments, and technologically intensive export oriented products are improving economic efficiency performance and contributing to energy saving sustainable economic development. The technological intensity of products reduces energy consumption, which is related to restructuring of energy intensive industries into more advanced and energy saving ones with higher value added per unit of product, but with lower energy consumption per unit of product. Santrauka Autoriai analizuoja struktūrinius ekonominio efektyvumo ir energijos vartojimo intensyvumo, kaip vienų iš pagrindinių subalansuotos plėtros kintamųjų, rodiklius. Tirti buvo pasirinktos 33 Europos valstybės. Autoriai, siekdami pagrįsti iškeltus teiginius, naudojo koreliacinę, regresinę analizę bei daugiakriterinius metodus galimoms ekonominio efektyvumo bei energijos vartojimo laipsnio (ir kitų, ne mažiau svarbių elementų) variacijoms nustatyti. Ekonominis efektyvumas labai dažnai asocijuojasi su tyrimais ir plėtra (R&D), eksportuojamomis aukštosiomis technologijomis. Remdamiesi atliktų tyrimų rezultatais autoriai siūlo nukreipti tiek politinius sprendimus, tiek valdymo strategijas į tyrimų ir plėtros (R&D) veiklas, investicijas į žmogiškuosius išteklius, technologinius sprendimus, nes visa tai galima susieti su subalansuotos plėtros koncepcija.

A New Model for Energy-Saving in Cast Irons Production Introduced Technology Contribution

2011 ◽  
Vol 71-78 ◽  
pp. 2420-2423
Author(s):  
Dan Huang ◽  
Wu Zhao ◽  
Wei Ping Chen
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Analysis Model ◽  
Cast Irons ◽  
New Model ◽  
Yield Increase ◽  
Study Results ◽  
Technological Level ◽  
Lost Foam

A new model for energy-saving in cast irons production introduced technology contribution has been developed. According to the analysis model, in case of keeping same energy efficiency of device, the higher technological level increases, the easier the R increases; even if keep the same melting and heat treatment devices, significant reduction of production energy consumption would be implemented just depending on the production yield increase. A case study results show that technology measurements which has no direct effect on energy consumption play an important role in energy conservation, where the contribution rates of lost-foam casting and computer technology are 20% and 17%. The technological measurements play an important role in cast irons production which cannot be ignored.

scholarly journals Reduction of Energy Intensity in Broiler Facilities: Methodology and Strategies

2021 ◽  
Vol 8 ◽  
Author(s):  
Catherine Baxevanou ◽  
Dimitrios Fidaros ◽  
Ilias Giannenas ◽  
Eleftherios Bonos ◽  
Ioannis Skoufos
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Thermal Energy ◽  
Energy Intensity ◽  
Electrical Energy ◽  
Energy Performance ◽  
Advanced Technology ◽  
Energy Audit ◽  
Wind Potential ◽  
Technology Level

Broiler facilities consume a lot of energy resulting in natural source depletion and greater greenhouse gas emissions. A way to assess the energy performance of a broiler facility is through an energy audit. In the present paper, an energy protocol for an energy audit is presented covering both phases of data collection and data elaboration. The operational rating phase is analytically and extendedly described while a complete mathematical model is proposed for the asset rating phase. The developed energy audit procedure was applied to poultry chambers located in lowland and mountainous areas of Epirus Greece for chambers of various sizes and technology levels. The energy intensity indices varied from 46 to 89 kWh/m2 of chamber area 0.25–0.48 kWh/kg of produced meat or 0.36–1.3 kWh/bird depending on the chamber technology level (insulation, automation, etc.) and the location where the unit was installed. The biggest energy consumer was heating followed by energy consumption for ventilation and cooling. An advanced technology level can improve energy performance by ~ 27%−31%. Proper insulation (4–7 cm) can offer a reduction of thermal energy consumption between 10 and 35%. In adequately insulated chambers, the basic heat losses are due to ventilation. Further energy savings can be achieved with more precise ventilation control. Automation can offer additional electrical energy saving for cooling and ventilation (15–20%). Energy-efficient lights can offer energy saving up to 5%. The use of photovoltaic (PV) technology is suggested mainly in areas where net-metering holds. The use of wind turbines is feasible only when adequate wind potential is available. Solar thermal energy is recommended in combination with a heat pump if the unit's heating and cooling systems use hot/cold water or air. Finally, the local production of biogas with anaerobic fermentation for producing thermal or electrical energy, or cogenerating both, is a choice that should be studied individually for each farm.

scholarly journals Distributed Nonlinear Model Predictive Control for Connected Autonomous Electric Vehicles Platoon with Distance-Dependent Air Drag Formulation

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5122
Author(s):  
Bianca Caiazzo ◽  
Angelo Coppola ◽  
Alberto Petrillo ◽  
Stefania Santini
Keyword(s):  
Energy Consumption ◽  
Model Predictive Control ◽  
Energy Saving ◽  
Predictive Control ◽  
Electric Vehicles ◽  
Nonlinear Model ◽  
Nonlinear Model Predictive Control ◽  
Air Drag ◽  
Cooperative Driving ◽  
The Cost

This paper addresses the leader tracking problem for a platoon of heterogeneous autonomous connected fully electric vehicles where the selection of the inter-vehicle distance between adjacent vehicles plays a crucial role in energy consumption reduction. In this framework, we focused on the design of a cooperative driving control strategy able to let electric vehicles move as a convoy while keeping a variable energy-oriented inter-vehicle distance between adjacent vehicles which, depending on the driving situation, was reduced as much as possible to guarantee air-drag reduction, energy saving and collision avoidance. To this aim, by exploiting a distance-dependent air drag coefficient formulation, we propose a novel distributed nonlinear model predictive control (DNMPC) where the cost function was designed to ensure leader tracking performances, as well as to optimise the inter-vehicle distance with the aim of reducing energy consumption. Extensive simulation analyses, involving a comparative analysis with respect to the classical constant time headway (CTH) spacing policy, were performed to confirm the capability of the DNMPC in guaranteeing energy saving.

scholarly journals KEY DIRECTIONS OF ENERGY SAVING IN AGRICULTURE

2020 ◽  
pp. 34-42
Author(s):  
Vasyl Hradovyi
Keyword(s):  
Energy Consumption ◽  
Energy Balance ◽  
Energy Saving ◽  
Energy Use ◽  
Energy Resources ◽  
Positive Energy ◽  
Environmental Friendliness ◽  
Relevant Today ◽  
The Cost ◽  
Reducing Energy

Introduction. The problem of energy saving becomes more and more relevant in the conditions of organizational and economic relations transformation in agriculture. It is connected with intensive technologies used in the agriculture, with the cost and availability of different energy types. It affects the cost of production, its environmental friendliness and the achievement of sustainable development goals. Methods. The article talks about theoretical provisions related to the application of agro-technological operations in agriculture, including their economic and environmental components. Monographic, abstract and logical methods, as well as methods of comparison, generalization, and analysis, are used. Results. It is established that agriculture, unlike other branches of the economy, is not only a consumer of energy, but also generates it as a finished product. This uses anthropotechnogenic energy, as well as solar and soil energy. It is emphasized that the issue of achieving positive energy balance in agriculture is relevant today and needs to be solved by reducing energy consumption from non-renewable sources. It is determined that energy saving in agriculture involves the application of legislative, organizational, scientific, productional, technical and economic measures. As a result, the balanced energy consumption, rational energy use, optimization of energy saving management through organizational and economic mechanism and reducing energy consumption should occur. It is proved that the directions of energy saving in the agricultural sphere can be determined by the processes of its circulation and manifest itself in the form of providing access to energy resources, creating competitive conditions in the energy supply market, diversifying energy resources, increasing the efficiency of technical means. Considering the tools of energy saving achievement, it is determined that its main areas are: management, energy, technology, technical and selectional measures. Together their action is aimed at reducing energy consumption of fossil origin and using the solar and soil energy optimally. Discussion. The results of the study serve as a theoretical basis for further research in the energy saving field of agriculture, which can be implemented to substantiate comprehensive actions aimed at reducing energy consumption, as well as to develop an organizational and economical mechanism capable of achieving the highest level of energy saving. Keywords: energy saving, energy efficiency, agriculture, energy balance, directions of energy saving.

scholarly journals Control of energy aspects of track and rolling stock interaction

2018 ◽  
Vol 239 ◽  
pp. 01044 ◽  
Author(s):  
Victor Pevzner ◽  
Uriy Romen ◽  
Kirill Shapetko
Keyword(s):  
Energy Consumption ◽  
Best Practices ◽  
Power Consumption ◽  
Energy Saving ◽  
Cost Reduction ◽  
Rolling Stock ◽  
Track Geometry ◽  
Track Maintenance ◽  
Before And After ◽  
Layout Geometry

The paper analyses international practices of energy saving for train traction. It describes methods that allow decrease of power consumption. Russian practices of energy consumption for train traction are reviewed, as well as methods for determining the power consumption related to condition of track layout geometry. Best practices of evaluation of impact of profile elevation unevenness to the train traction energy consumption are presented. The calculations that allow matching the data on track geometry before and after track maintenance works are performed, and the convictions concerning cost reduction for train traction energy saving are developed.

Efficiency of industrial enterprises energy services taking into account the environmental factor

2021 ◽  
pp. 64-72
Author(s):  
G. Myroshnychenko ◽  
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Greenhouse Gas ◽  
Environmental Factor ◽  
Energy Intensity ◽  
Machine Building ◽  
Industrial Enterprise ◽  
Energy Resources ◽  
Energy Services ◽  
The Impact

Objective: to investigate the problem of environmentally friendly efficiency of energy services of an industrial enterprise in the management system of economic processes, which would be based on the assessment of financial, economic, social and environmental effects on the final activity of the industrial enterprise. Method. The following methods were used in the process of research: analysis and synthesis, logic, theoretical generalization, comparison, causation. Results. The article examines the environmental acceptability of energy production and energy consumption, which is the main component of energy security. The efficiency of energy consumption in Ukraine is analyzed. The total greenhouse gas emissions in the energy sector have been studied. It is determined that the total greenhouse gas emissions are divided into four key areas: energy generation; extraction and processing of energy resources; transport; for consumption. It is determined that the only relatively universal and comparable for international and regional comparisons indicator of energy efficiency and environmentally oriented economy is the indicator of energy intensity of GDP, taking into account purchasing power parity (PPS). The problem of efficient ecologically oriented use of energy resources for industry is substantiated. The dynamics of energy consumption of machine-building enterprises of Ukraine and their energy intensity are analyzed. It is determined that machine-building enterprises have a significant resource of energy saving, and hence a significant resource of reducing the negative impact on the environment, the implementation of which is possible primarily due to structural changes and does not require significant financial resources. It is substantiated that the service of the chief power engineer is engaged in development and implementation of measures on energy saving, energy saving and environmental protection at the enterprises. Based on the specifics of the functioning of the energy sector, a chain of influence of the efficiency of energy services on the efficiency of the industrial enterprise is formed. The peculiarity of the proposed chain is the real requirements for taking into account the impact of energy on the functioning of the enterprise as a whole and on the external environment in both forward and reverse directions. Scientific novelty. The proposed chain of influence of efficiency of energy services on efficiency of the industrial enterprise allows to position efficiency of energy economy of the industrial enterprise in the general system of formation of efficiency of the enterprise and to specify its components through financial and economic, social and ecological effect. Practical significance. The study proved the need to clarify by taking into account the impact of the energy service in the form of emissions, discharges and wastes, which allows you to manage the efficiency of the enterprise as a whole taking into account the efficiency triad (environmental, social, economic component). as a strategic priority for the development of Ukraine. Key words: environmental factor, energy resources, energy intensity, environmental safety, energy saving.

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