scholarly journals Energy-saving design and implementation in metro weak current systems: a case study of the Kunming metro system

2021 ◽  
Author(s):  
Chang Haili
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Management ◽  
Power Supply ◽  
Communication Systems ◽  
Current System ◽  
Weak Current ◽  
Integrated Monitoring ◽  
Management Platform ◽  
Current Systems

AbstractWith the accelerated urbanization in China, along with the growing scale of the metro transportation network, the energy consumption of metro systems continues to increase. To face the tough challenge of climate change, China has put forward the goal of peak carbon emissions by 2030 and achieving carbon neutrality by 2060. Energy consumption has become a serious burden for metro operation companies, since 10.2% of the total operational budgets is spent on electricity. Thus the development of methods to realize energy saving and emission reduction has become a major challenge for metros. In this study we conduct an in-depth research and analysis on metro energy load classification and energy management, focusing in particular on the design and usage of power supply systems for metro weak current electromechanical systems, including tunnel fans, station air conditioners, station escalators, automatic ticketing equipment, screen doors, drainage pumps, sewage pumps, platform doors, communication systems, signals, integrated monitoring systems, automatic ticketing and various lighting equipment and facilities. It is proposed that the five weak current systems, namely platform doors, communication systems, signals, integrated monitoring and automatic fare collection, should adopt a backup power supply. In order to ensure the reliable operation of all weak current systems in the station, the traditional decentralized power supply mode is changed to a centralized power supply and uninterruptible power supply (UPS) (1 + 1) parallel double-bus system. At the same time, combined with the data on equipment quantity, station passenger flow and station building floorage, the Boruta algorithm is used to filter out the equipment related to station weak current energy consumption, and a principal component analysis (PCA) algorithm is used to further reduce the dimensions of the filtered features to reduce the algorithm overhead of the subsequent quota analysis model. The XGBoost algorithm is used to establish a prediction model for station weak current system energy consumption. Analysis shows that there is a strong correlation between the energy consumption quota and the equipment quantity as well as station building floorage. By setting different metering instruments for power supply circuits, the main energy consumption data are collected to meet the requirements for graded metering of metro energy consumption, and then the energy consumption quota for the station weak current system is reasonably predicted. By adding metering instruments to the power supply circuits of different areas and equipment, the energy consumption of the weak current system can be measured and monitored in different grades. The combination of the energy management platform and energy consumption quota provides the basis for energy management of each energy-consuming unit, and ultimately realizes energy saving and reduced consumption.

Energy-Saving Technologies of WSN

2012 ◽  
Vol 605-607 ◽  
pp. 566-569
Author(s):  
Rong Mao Zheng
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Power Supply ◽  
Sensor Node ◽  
Large Scale ◽  
Working Life ◽  
Environmental Data ◽  
Wireless Sensor ◽  
Wireless Sensor Node ◽  
Node Energy

In order to layout convenient the wireless sensor node generally used battery for power supply, the node require working up to several months or even years but battery replacement was difficult or impossible. In this paper, research does not affect the function of WSN how to save the node energy consumption, which can work more time in large-scale collection, processing and communication of complex environmental data. Results show that the energy-saving technologies can be to reduce the energy consumption of 55.6%, which can greatly extend the working life of the wireless sensor node battery.

scholarly journals Application Calibration Based on Energy Consumption Model in Optimal Design of Green Buildings

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Feiran Xue ◽  
Jingyuan Zhao
Keyword(s):  
Sustainable Development ◽  
Life Cycle ◽  
Energy Consumption ◽  
Energy Saving ◽  
Energy Management ◽  
Green Buildings ◽  
Load Test ◽  
Energy Consumption Model ◽  
Consumption Model

Buildings will generate considerable resource and energy consumption, environmental impact, and costs throughout their entire life cycle. Life cycle assessment and life cycle cost methods have become widely used building sustainability evaluation methods internationally due to their long-term comprehensive evaluation perspectives and scientific quantitative calculation methods. In response to energy consumption management issues in green buildings, a questionnaire survey was conducted to investigate the concepts of sustainable development, green environmental protection, and energy consumption management of construction enterprise personnel. Through the survey, it can be seen that corporate executives generally have a sense of sustainable development and pay more attention to sustainable competition and the green development of enterprises. Approximately 90% of executives understand energy consumption models. Only 10% of employees do not understand, but they are acquired by the company’s frontline employees. The result of the feedback is just the opposite. Frontline workers pay little attention to the long-term development of the company. Only about 5% of employees are proficient in the energy management system, but the proportion of completely unknown is as high as 20%, indicating that the overall energy management awareness of Chinese enterprises still needs to be strengthened. Secondly, through design experiments, the energy-saving management effect of the energy consumption model was observed and analyzed. From the power saving and load test, we found that the monitoring of the energy consumption model is helpful for companies to choose more energy-efficient building circuit designs, achieving an average annual energy-saving effect of about 8%, so as to achieve the purpose of energy saving.

Energy Management for the Automotive Paint Workshop

2015 ◽  
Vol 713-715 ◽  
pp. 300-303 ◽  
Author(s):  
Qing Liang Zhang
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Management ◽  
Economic Efficiency ◽  
Practical Application ◽  
Saving Energy ◽  
Automotive Paint ◽  
Consumption Cost ◽  
Painting Process

Paint workshop energy consumption cost is always the prominent part in the production and manufacturing. How to achieve the purpose of saving energy, improving economic efficiency has been the focus of the industry. The principle, characteristics and application prospect of energy management for the automotive paint workshop are illustrated. Combined with the practical application in painting process and paint equipment, energy saving techniques regarding to the paint assembly is analyzed.

The Influence Factors of Energy Consumption and Energy Savings Potential in Office Buildings

2012 ◽  
Vol 209-211 ◽  
pp. 1820-1824
Author(s):  
Shuo Peng Zhang ◽  
Xiao Ju Xu ◽  
Rui Li
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Management ◽  
Energy Savings ◽  
Influence Factors ◽  
Office Buildings ◽  
User Behaviors ◽  
The North

This research is aimed at exploring the influence factors of energy consumption and energy management by researching 16 big office buildings located in the north of China, and offer some energy saving suggestions by improving the user behaviors.

Energy Management in Manufacturing Systems

2011 ◽  
Author(s):  
Qing Chang ◽  
Guoxian Xiao ◽  
Lin Li ◽  
Stephan Biller
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Management ◽  
Production System ◽  
Manufacturing Systems ◽  
Production Management ◽  
Production Efficiency ◽  
Manufacturing System ◽  
Energy Savings ◽  
Energy System

Conventionally, improving production efficiency, flexibility and responsiveness has been the primary research focus of production management, while energy consumption has received relatively little attention. Energy consumption plays a more and more important role in manufacturing environment. This is mainly driven by energy cost and environmental concerns. When the energy system becomes complicated and coupled with ongoing production, it is very difficult to hunt the “hidden treasure” which affects the overall benefit of a manufacturing system. This paper provides a systematic method for energy management in a production system. We start from dynamic production transient analysis and provide quantitative analysis for energy saving opportunity in a system. Furthermore, energy saving is integrated into production system which includes downtime and throughput to provide integrated energy management framework for a production system. A case study is conducted to demonstrate its potential on energy savings in a multi-stage manufacturing system.

scholarly journals Methods of determination of product energy intensity on the example of a grain elevator

2021 ◽  
Author(s):  
V. Korenda ◽  
◽  
O. Protasov ◽  
I. Vyshniakov ◽  
M. Kolyadyuk ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Saving ◽  
Energy Management ◽  
Energy Intensity ◽  
Energy Budgets ◽  
Professional Activity ◽  
Energy Management Systems ◽  
Industrial Enterprises ◽  
Grain Elevator

Energy management is an independent type of professional activity aimed at achieving in the course of any business activity of an enterprise operating in market conditions, reducing costs by improving energy efficiency. Energy management includes a set of measures aimed at saving energy resources: monitoring of energy consumption and energy intensity of products, development of energy budgets, analysis of existing indicators as a basis for drawing up new budgets, development of energy policy, planning of new energy saving measures. This article describes the methodology for determining the energy intensity of products for industrial enterprises, namely energy intensity indicators. These values include: norms of consumption of heat and electricity per unit of industrial production, as well as norms of consumption of fuel and electricity for the supply of heat to the boiler plant of the enterprise. These numbers are indicators of energy efficiency that need to be calculated when implementing energy management systems at enterprises. They are the benchmarks by which the current state of energy efficiency is assessed and planned for the future, taking into account changes in output, implementation or dismantling of equipment, implementation of energy-saving measures, etc. The article shows the calculation of energy consumption of products by the example of a grain elevator.

scholarly journals Peculiarities of regulatory and legal support in the field of energy saving in Ukraine

2021 ◽  
pp. 34-39
Author(s):  
Olha Sobko ◽  
Svitlana Smereka
Keyword(s):  
Energy Saving ◽  
Energy Management ◽  
State Policy ◽  
Alternative Energy ◽  
Current System ◽  
Interdisciplinary Approach ◽  
Legal Framework ◽  
The State ◽  
Economic Systems ◽  
Business Entities

Purpose. The aim of the article is to research the current legislation in the field of energy saving, which is based on the principles of complexity and priority, as well as the use of alternative energy sources in Ukraine. Methodology of research. In the course of the research an interdisciplinary approach is used, which allowed to substantiate topical issues of energy saving development in Ukraine, institutional approach: the legal framework of the study is the current legislation of Ukraine in the field of energy saving; abstract and logical –for generalizations and formation of conclusions, in particular, by amendment of normative-legal maintenance which has the complex influence which is shown at macro- and micro-levels of economic systems. Findings. Peculiarities of development of normative and legal provision of energy saving in Ukraine are considered, the main tasks of the state policy and the purpose of introduction of ESU in the field of energy saving are singled out. The necessity of active introduction of energy management by business entities is substantiated. Originality. The key tasks of the state policy in the field of energy saving are defined. Obstacles in the field of energy saving are systematized within three components. Proposals for improving energy saving, which can be achieved by amending the regulatory framework, are substantiated; integrated impact, which involves the implementation of economic systems at the macro and micro levels; revival of investments in energy saving processes and a number of innovative changes at both legislative and executive levels. Practical value. The received proposals can be used to improve the current system of energy saving management in Ukraine, in particular, the practice of energy management as an innovative system to ensure efficiency and competitiveness, balanced economic development and innovation of economic entities. Key words: energy saving, energy strategy, investments, regulatory support, competitiveness, alternative fuel sources.

scholarly journals Research on Energy Management of Hybrid Unmanned Aerial Vehicles to Improve Energy-Saving and Emission Reduction Performance

2020 ◽  
Vol 17 (8) ◽  
pp. 2917 ◽  
Author(s):  
Mingliang Bai ◽  
Wenjiang Yang ◽  
Dongbin Song ◽  
Marek Kosuda ◽  
Stanislav Szabo ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Fuel Consumption ◽  
Energy Management ◽  
Emission Reduction ◽  
Negative Impact ◽  
Rapid Development ◽  
Energy Conversion Efficiency ◽  
Pollutant Emissions ◽  
The Sustainable Development

The rapid development of industry results in large energy consumption and a negative impact on the environment. Pollution of the environment caused by conventional energy sources such as petrol leads to increased demand for propulsion systems with higher efficiency and capable of energy-saving and emission reduction. The usage of hybrid technology is expected to improve energy conversion efficiency, reduce energy consumption and environmental pollution. In this paper, the simulation platform for the hybrid unmanned aerial vehicle (UAV) has been built by establishing the subsystem models of the UAV power system. Under the two chosen working conditions, the conventional cruise flight mission and the terrain tracking mission, the power tracking control and Q-Learning method have been used to design the energy management controller for the hybrid UAV. The fuel consumption and pollutant emissions under each working condition were calculated. The results show that the hybrid system can improve the efficiency of the UAV system, reduce the fuel consumption of the UAV, and so reduce the emissions of CO2, NOx, and other pollutants. This contributes to improving of environmental quality, energy-saving, and emission reduction, thereby contributing to the sustainable development of aviation.

Effect of Building Management System on Energy Saving

2013 ◽  
Vol 856 ◽  
pp. 333-337 ◽  
Author(s):  
Saeed Kamali ◽  
Golrokh Khakzar ◽  
Soolmaz Abdali Hajiabadi
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Management ◽  
San Francisco ◽  
Management System ◽  
Service Management ◽  
Dynamic Environment ◽  
Building Energy Management ◽  
Current Century ◽  
Save Energy

Without any doubt, one of the most worldwide challenging and controversial issues in the current century is the energy problem. In most countries, the increase of energy consumption, especially in building, has made energy saving and efficiency strategies important target for energy policies. In general, there are many ways to save energy. The most common method of economizing is within culturalization. For such purpose, building energy management system (BEMS) is considered as the latest idea of energy. Having a dynamic environment, smart buildings are affordable by the integration of four main elements: systems, structure, service, management, and the relationship between them. Intelligent buildings provide these benefits through intelligent control systems. In this paper, while introducing the energy management in buildings, it studies their applications and also their effects on management and optimization of energy consumption. The office building in San Francisco, USA with 66,943 ft2 area is considered as a case study for this research. Energy consumption is reduced 50 percent by implementing BMS in this building.

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