Study on Energy Consumption Index System and Accounting Method of Green Highway in Water Sensitive Area of Dongting Lake

2021 ◽  
Keyword(s):  
Energy Consumption ◽  
Index System ◽  
Dongting Lake ◽  
Sensitive Area ◽  
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.

Research on the Energy Consumption Evaluation Model of Container Terminal Logistics System

2012 ◽  
Vol 157-158 ◽  
pp. 1224-1229 ◽  
Author(s):  
Bin Yang ◽  
Yuan Yuan Guo ◽  
Xu Shi ◽  
Yang Yang Lu
Keyword(s):  
Energy Consumption ◽  
Index System ◽  
Evaluation Model ◽  
Container Terminal ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Effective Energy ◽  
Logistics System ◽  
Static Energy ◽  
Container Terminal Logistics

In this paper, energy consumption evaluation index system of the container terminal logistics system is briefly studied. Energy consumption is divided into two parts as dynamic and static energy consumption. Then an effective energy consumption evaluation model of container terminal logistics system is established.

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.

Sign in / Sign up

Export Citation Format

Share Document