Energy consumption index of China's manufacturing based on grey change-point —from the perspective of policy

2015 ◽  
Author(s):  
Wei Sun ◽  
Zaiwu Gong ◽  
Shuangshuang Ji ◽  
Qianqian Chen
Keyword(s):  
Energy Consumption ◽  
Change Point ◽  
Consumption Index

The Establishment of Exergy Consumption Evaluation Index in Heated Oil Pipeline Transportation

2013 ◽  
Vol 401-403 ◽  
pp. 2143-2146 ◽  
Author(s):  
Qing Lin Cheng ◽  
Zhe Li ◽  
Shuai Shao ◽  
Wei Sun ◽  
Xu Xu Wang
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Evaluation System ◽  
Index Set ◽  
Oil Pipeline ◽  
Heated Oil ◽  
Consumption Index ◽  
Exergy Consumption ◽  
Exergy Transfer ◽  
Set Up

The exergy consumption during the transportation of heated oil includes four items: valid and invalid pressure exergy consumption, valid and invalid heat exergy consumption. These four parts are taken as the same loss in traditional evaluation systems of pipeline energy consumption, which somewhat hinders the further energy-conservation study. So establishing a scientific exergy consumption evaluation system is an important basis work of energy efficiency management. Based on the index system of energy efficiency for pipeline proposed by predecessors, the meaning of energy quality for exergy and the categories of exergy flow, the energy consumption index set of exergy transfer is set up in this article. Moreover, by computing exergy consumption index of exergy transfer for an oil pipeline in Daqing Oilfield, a part of representative indexes are selected by analyzing the obtained data with correlation coefficient method. Finally, the exergy consumption evaluation system is constructed.

scholarly journals Energy consumption index minimized resource allocation in hybrid energy multiuser OFDM system with distributed antennas

2018 ◽  
Vol 17 ◽  
pp. 03015
Author(s):  
Huanhuan MAO ◽  
Pengcheng Zhu ◽  
Jiamin Li
Keyword(s):  
Resource Allocation ◽  
Energy Consumption ◽  
Energy Harvesting ◽  
Power Allocation ◽  
Base Station ◽  
Mixed Integer ◽  
Subcarrier Allocation ◽  
Ofdm System ◽  
Consumption Index ◽  
Distributed Antennas

Energy harvesting is one of the promising option for realization of green communication and has been a growing concern recently. In this paper, we address the downlink resource allocation in OFDM system with distributed antennas with hybrid power supply base station, where energy harvesting and non-renewable power sources are used complementarily. A joint subcarrier and power allocation problem is formulated for minimizing the net Energy Consumption Index (ECI) with system Quality of Service (QoS) and bit error rates constraint. The problem is a 0-1 mixed integer nonlinear programming problem due to the binary subcarrier allocation variable. To solve the problem, we design an algorithm based on Lagrange relaxation method and fraction programming which optimizes the power allocation and subcarrier allocation iteratively in two nests. Simulation results show that the proposed algorithm converges in a small number of iterations and can improve net ECI of system greatly.

scholarly journals The Integrated Energy Consumption Index for Energy Biomass Grinding Technology Assessment

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1417 ◽  
Author(s):  
Weronika Kruszelnicka ◽  
Robert Kasner ◽  
Patrycja Bałdowska-Witos ◽  
Józef Flizikowski ◽  
Andrzej Tomporowski
Keyword(s):  
Energy Consumption ◽  
Energy Demand ◽  
Power Input ◽  
Angular Speed ◽  
Process Efficiency ◽  
Engineering Systems ◽  
Energy Assessment ◽  
Consumption Index ◽  
Reduction Of Energy Consumption ◽  
Current Energy

The assessment of engineering objects in terms of energy consumption is an important part of sustainable development. Many materials, including those from the energy sector, need to undergo earlier processing, e.g., grinding. Grinding processes still demand a significant amount of energy, whereas current energy assessment methods do not take into account important parameters of the process, which makes it difficult to choose their optimal values. The study presents the analysis, testing, and assessment of mechanical engineering systems in terms of the energy consumption involved in the grinding of biomass intended for energy production purposes. A testing methodology was developed to improve the parameters of multi-disc grinding, including the reduction of energy consumption, power input, product quality improvement, and process efficiency. An original model of integrated energy consumption was developed. Tests were carried out on a five-disc grinder for five programs to assess the programmable angular speeds of the grinder discs. Output values, including specific energy demand, fragmentation degree, and integrated energy consumption, were assigned to each testing program. The test results were subjected to statistical analysis. Based on the authors’ own research, it was found that the angular speed of the discs and, consequently, the linear speed of the grinding blades, have a significant influence on the values of the integrated energy consumption of the preliminary process.

Study and Determination of Evaluating Indicator of Public Building Energy Consumption in Hot Summer and Warm Winter Area

2013 ◽  
Vol 838-841 ◽  
pp. 1953-1958
Author(s):  
Hai Li Sun ◽  
Zhi Chao Wang ◽  
Jun Jun Lu
Keyword(s):  
Energy Consumption ◽  
Total Energy ◽  
Energy Saving ◽  
Building Energy ◽  
Shopping Malls ◽  
Total Energy Consumption ◽  
Public Building ◽  
Partial Energy ◽  
Consumption Index

Determination of buildingenergy consumption index is important for building energy saving.This paper simulits energy consumption of fifty public building(incluiding 15 non - government office buildings, 11 government officebuildings, 12 shopping malls, 12 hotel buildings) after abandoning theunreasonable design and operation factors. We can obtain the building total energy consumption index andpartial energy consumption index.Then all types of building energy consumptiondata are processed with the method of mathematical statistics.We can get fourtypes of biuding energy consumption index and partial energy consumptionindex.This study can provide the basis for energy-saving operation andenergy-saving reformation.

scholarly journals Humanoid Robot Cooperative Motion Control Based on Optimal Parameterization

2021 ◽  
Vol 15 ◽  
Author(s):  
Qiubo Zhong ◽  
Yaoyun Li ◽  
Caiming Zheng ◽  
Tianyao Shen
Keyword(s):  
Energy Consumption ◽  
Humanoid Robot ◽  
Control Method ◽  
Humanoid Robots ◽  
Parameters Optimization ◽  
Optimal Parameters ◽  
Cooperative Motion ◽  
Key Technologies ◽  
Consumption Index ◽  
The Stability

The implementation of low-energy cooperative movements is one of the key technologies for the complex control of the movements of humanoid robots. A control method based on optimal parameters is adopted to optimize the energy consumption of the cooperative movements of two humanoid robots. A dynamic model that satisfies the cooperative movements is established, and the motion trajectory of two humanoid robots in the process of cooperative manipulation of objects is planned. By adopting the control method with optimal parameters, the parameters optimization of the energy consumption index function is performed and the stability judgment index of the robot in the movement process is satisfied. Finally, the effectiveness of the method is verified by simulations and experimentations.

Energy Consumption Reduction Decomposition Model Based on Input-Output Analysis and Comprehensive Evaluation

2013 ◽  
Vol 291-294 ◽  
pp. 1221-1226
Author(s):  
Run Bo Kang ◽  
Fen Yang ◽  
Ye Qing Guan
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Comprehensive Evaluation ◽  
Jiangsu Province ◽  
Input Output ◽  
Output Table ◽  
Energy Consumption Reduction ◽  
Consumption Reduction ◽  
Consumption Index ◽  
Consumption Intensity

According to the input-output table and energy consolidated balance sheet of 2002 and 2007, compiled physical-value energy input-output table of six major departments and then analyzed direct energy consumption index and completely energy consumption index of Jiangsu province. Using index decomposition method and SDA method, analyzed influence of changes in technical efficiency and structure on the energy consumption intensity fluctuation respectively from the whole and each department, conducted comprehensive evaluation index to comprehensively evaluate and analyze six major departments in Jiangsu province, so as to find out the main cause of the energy consumption intensity changes in Jiangsu province, and then according to the energy consumption reduction target in the “12th Five-Year” plan, we put forward relevant countermeasures：adhere to structure, technology and management energy saving carrying out together, put the industry as the main attack direction of energy saving and encourage and support enterprises to increase investment in science and technology.

Sign in / Sign up

Export Citation Format

Share Document