scholarly journals Energy-Efficiency Improvement and Processing Performance Optimization of Forging Hydraulic Presses Based on an Energy-Saving Buffer System

2020 ◽  
Vol 10 (17) ◽  
pp. 6020
Author(s):  
Xiaopeng Yan ◽  
Baijin Chen
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Power Unit ◽  
Performance Optimization ◽  
Cooling System ◽  
Hydraulic Press ◽  
Buffer System ◽  
Hydraulic Actuator ◽  
Increase Energy Efficiency ◽  
Energy Efficiency Improvement

This paper proposes an energy-saving system based on a prefill system and a buffer system to improve the energy efficiency and the processing performance of hydraulic presses. Saving energy by integrating such systems into the cooling system of a hydraulic press has not been previously reported. A prefill system, powered by the power unit of the cooling system, is used to supply power simultaneously with the traditional power unit during the pressurization stage, thus reducing the usage of pumps and installed power of the hydraulic press. In contrast to the traditional prefill system, the proposed energy-saving system is controlled by a servo valve to adjust flow according to the load profile. In addition, a buffer system is employed to the cooling system to absorb the hydraulic shock generated at the unloading stage, store those shares of hydraulic energy as a recovery accumulator, and then release this energy to power the prefill system and the hydraulic actuator in the subsequent productive process. Finally, through a series of comparative experiments, it was preliminarily validated that the proposed system could reduce the installed power and pressure shock by up to 22.85% and 41%, respectively, increase energy efficiency by up to 26.71%, and provide the same processing characteristics and properties as the traditional hydraulic press.

Additional methods to improve the energy efficiency of oil pipeline transportation

2020 ◽  
Vol 10 (5) ◽  
pp. 558-565
Author(s):  
Marat R. Lukmanov ◽  
◽  
Sergey L. Semin ◽  
Pavel V. Fedorov ◽  
◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Pipeline System ◽  
Energy Costs ◽  
Improvement Program ◽  
Oil Pipeline ◽  
Energy Efficiency Improvement ◽  
Oil Transportation ◽  
Pumping Equipment ◽  
Preparatory Work

The challenges of increasing the energy efficiency of the economy as a whole and of certain production sectors in particular are a priority both in our country and abroad. As part of the energy policy of the Russian Federation to reduce the specific energy intensity of enterprises in the oil transportation system, Transneft PJSC developed and implements the energy saving and energy efficiency improvement Program. The application of energy-saving technologies allowed the company to significantly reduce operating costs and emissions of harmful substances. At the same time, further reduction of energy costs is complicated for objective reasons. The objective of this article is to present additional methods to improve the energy efficiency of oil transportation by the example of the organizational structure of Transneft. Possibilities to reduce energy costs in the organization of the operating services, planning and execution of work to eliminate defects and preparatory work for the scheduled shutdown of the pipeline, the use of pumping equipment, including pumps with variable speed drive, the use of various pipelines layouts, changing the volume of oil entering the pipeline system and increase its viscosity.

IMPROVEMENT OF ENERGY SAVING AND ENERGY EFFICIENCY IN BUILDINGS AND RESIDENTIAL HOUSES IN THE KYRGYZ REPUBLIC

2019 ◽  
pp. 3-17
Author(s):  
Turatbek Kasymov
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Energy System ◽  
Environmental Indicators ◽  
Kyrgyz Republic ◽  
Technical Standards ◽  
Insulating Materials ◽  
Increase Energy Efficiency ◽  
State Construction ◽  
The Government

This article reviews energy consumption in the Kyrgyz Republic economy, environmental indicators and strategies to further develop the national fuel and energy system to ensure energy efficiency and energy saving. An existing situation in energy efficiency of buildings in the country is described. Secondary legislation and by-laws approved by the Government of the Kyrgyz Republic as well as several technical standards, norms, methods and guidelines approved by the order of the State Construction Agency of the Kyrgyz Republic are presented. Applying modern insulating materials are suggested as possible solutions to increase energy efficiency and energy saving. The advantages of EPS-beton in comparison with other thermal insulation materials are discussed and foreign experience of use of EPS-beton products in increasing energy efficiency of buildings is presented.

scholarly journals Strategy Context of Decision Making for Improved Energy Efficiency in Industrial Energy Systems

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1540 ◽  
Author(s):  
Alexander Melnik ◽  
Kirill Ermolaev
Keyword(s):  
Decision Making ◽  
Energy Efficiency ◽  
Energy Saving ◽  
Energy Management ◽  
Strategic Decision ◽  
Efficiency Improvement ◽  
Conceptual Approach ◽  
Industrial Companies ◽  
Energy Efficiency Improvement ◽  
The Impact

Energy efficiency improvement in industrial companies is an essential prerequisite for the enhancement of their competitive positions in the national and global markets. Yet, the approaches currently employed in respect of the energy management do not fully utilize the innovative potential of energy technologies to achieve strategic goals. One way to further develop energy management is theoretical justification of the use of new approaches based on the suggested concept of the energy saving and energy efficiency processes’ positioning in the system of a company’s management priorities. In this article, we consider the applied use of the developed conceptual approach from the perspective of the energy saving and energy efficiency program development at the company. The main purpose of this paper is to justify the relations between energy management and strategic decision making in industrial companies. The results of the research conducted, firstly, make a certain contribution into the research of strategic multiple benefits of energy efficiency in a company; secondly, they expand understanding of the impact of energy saving and energy efficiency improvement on the achievement of operational, tactical and strategic results of the company’s activities; thirdly, they provide methodological decision support for the development of energy saving and energy efficiency programs taking into account the management and organizational barriers.

scholarly journals Analysis of the evaporative towers cooling system of a coal-fired power plant

2012 ◽  
Vol 16 (suppl. 2) ◽  
pp. 375-385 ◽  
Author(s):  
Mirjana Lakovic ◽  
Slobodan Lakovic ◽  
Milos Banjac
Keyword(s):  
Energy Efficiency ◽  
Power Plant ◽  
Theoretical Analysis ◽  
Power Plants ◽  
Cooling Tower ◽  
Cooling System ◽  
Low Cost ◽  
Cooling Water ◽  
Energy Efficiency Improvement ◽  
Condensing Pressure

The paper presents a theoretical analysis of the cooling system of a 110 MW coal-fired power plant located in central Serbia, where eight evaporative towers cool down the plant. An updated research on the evaporative tower cooling system has been carried out to show the theoretical analysis of the tower heat and mass balance, taking into account the sensible and latent heat exchanged during the processes which occur inside these towers. Power plants which are using wet cooling towers for cooling condenser cooling water have higher design temperature of cooling water, thus the designed condensing pressure is higher compared to plants with a once-through cooling system. Daily and seasonal changes further deteriorate energy efficiency of these plants, so it can be concluded that these plants have up to 5% less efficiency compared to systems with once-through cooling. The whole analysis permitted to evaluate the optimal conditions, as far as the operation of the towers is concerned, and to suggest an improvement of the plant. Since plant energy efficiency improvement has become a quite common issue today, the evaluation of the cooling system operation was conducted under the hypothesis of an increase in the plant overall energy efficiency due to low cost improvement in cooling tower system.

What Role Will Technological Progress Play in Energy-Saving during Chinese Urbanization?

2011 ◽  
Vol 71-78 ◽  
pp. 2177-2181
Author(s):  
Ai Jun Li ◽  
Zheng Li
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Computable General Equilibrium ◽  
Technological Progress ◽  
Computable General Equilibrium Model ◽  
Financial Policy ◽  
Energy Efficiency Improvement ◽  
Policy Incentives ◽  
Dynamic Computable General Equilibrium ◽  
Technology Upgrading

This study analyzes the effects of technological progress for the elasticity of energy consumption from 2002 to 2030 in China by a dynamic computable general equilibrium model. The technological progress is represented by a combination of industrial technology upgrading and energy efficiency improvement. Household is divided into two groups as rural type and urban type. The parameters about technological progress and urbanization are all introduced exogenously. Simulation results show that vigorously pushing advanced energy efficiency technologies through financial policy incentives is the key to realize effective energy-saving achievement while promoting economic growth in China.

IMPROVEMENT OF ENERGY SAVING AND ENERGY EFFICIENCY IN BUILDINGS AND RESIDENTIAL HOUSES IN THE KYRGYZ REPUBLIC

2019 ◽  
pp. 3-19
Author(s):  
Turatbek Kasymov
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Energy System ◽  
Environmental Indicators ◽  
Kyrgyz Republic ◽  
Technical Standards ◽  
Insulating Materials ◽  
Increase Energy Efficiency ◽  
State Construction ◽  
The Government

This article reviews energy consumption in the Kyrgyz Republic economy, environmental indicators and strategies to further develop the national fuel and energy system to ensure energy efficiency and energy saving. An existing situation in energy efficiency of buildings in the country is described. Secondary legislation and by-laws approved by the Government of the Kyrgyz Republic as well as several technical standards, norms, methods and guidelines approved by the order of the State Construction Agency of the Kyrgyz Republic are presented. Applying modern insulating materials are suggested as possible solutions to increase energy efficiency and energy saving. The advantages of EPS-beton in comparison with other thermal insulation materials are discussed and foreign experience of use of EPS-beton products in increasing energy efficiency of buildings is presented.

scholarly journals EVALUATION OF ENERGY SAVING POTENTIAL ON THE BASIS OF ENERGY AUDIT

2016 ◽  
Vol 1 (12) ◽  
pp. 89-94 ◽  
Author(s):  
Косухин ◽  
Andrey Kosukhin ◽  
Косухин ◽  
Mikhail Kosukhin ◽  
Семак ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Residential Buildings ◽  
Necessary Condition ◽  
Housing Sector ◽  
Efficiency Improvement ◽  
Energy Audit ◽  
Energy Saving Potential ◽  
Energy Efficiency Improvement ◽  
Existing Housing

There were presented the findings of the research in energy saving and energy efficiency of public and residential buildings with the purpose of evaluating the energy saving potential on the basis of energy audit. There was demonstrated the nature of energy consumption and the evaluation figures of energy saving in state-financed sphere and housing sector of the country. On the basis of research and calculations of various specialists it was determined, that the highest potential of energy efficiency improvement belongs to the housing funds of the country. It was pointed out that capital repairs and reconstruction of the existing housing funds are the necessary condition of implementing the energy saving measures. The investment issues, their types and their attractiveness for energy saving measures and improving the energy efficiency are reflected.

scholarly journals TRIGENERATION AS A WAY OF ENERGY EFFICIENCY IMPROVEMENT REVIEW ARTICLE

2014 ◽  
pp. 82-87
Author(s):  
T. V. Pantsyrnaya ◽  
V. A. Parabin ◽  
A. V. Dyakov
Keyword(s):  
Energy Efficiency ◽  
Scientific Literature ◽  
Energy Systems ◽  
Review Article ◽  
Efficiency Improvement ◽  
Shopping Centers ◽  
Increase Energy Efficiency ◽  
Power Stations ◽  
Energy Efficiency Improvement ◽  
Key Aspects

The overview of current scientific literature on one of the key aspects of the development of the energy sector is presented, it is the increase of the efficiency of energy systems. The ability of cogeneration and trigeneration systems to increase energy efficiency of power stations, supermarkets, shopping centers, airports, etc. was demonstrated. In addition, it was shown that these systems have a high potential for reducing greenhouse gas emissions. The examples of polygeneration systems and ways to optimize them by improving techno-economic parameters were also demonstrated.

Sign in / Sign up

Export Citation Format

Share Document