scholarly journals TV Energy Consumption Trends and Energy-Efficiency Improvement Options

2011 ◽  
Author(s):  
Won Young Park ◽  
Amol Phadke ◽  
Nihar Shah ◽  
Virginie Letschert
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Efficiency Improvement ◽  
Energy Efficiency Improvement

scholarly journals Improving the economic performances of the beet-sugar industry

2008 ◽  
pp. 55-61 ◽  
Author(s):  
Bojana Prodanic ◽  
Aleksandar Jokic ◽  
Jelena Markovic ◽  
Zoltan Zavargo
Keyword(s):  
European Union ◽  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Savings ◽  
General Trend ◽  
Sugar Industry ◽  
Regional Level ◽  
Efficiency Improvement ◽  
Considerable Saving ◽  
Energy Efficiency Improvement

General trend of free trade at the regional level as well as in the direction of European Union has motivated sugar factories located in Serbia to invest into technologies that are more efficient in order to make their products more competitive in the markets of Europe. Until 2005, the project of energy efficiency improvement in Serbian sugar factories was conducted in Crvenka and Zabalj. Now, they have energy consumption around 1 MJ/kg beet, in contrast to the previous consumption of 1.2 up to 1.5 MJ/kg beet. Further improvements are possible but investments would be high. A result of measurements taken during 2006, after the sugar factory "Donji Srem" - Pecinci was reconstructed showed that a considerable saving has been achieved. The first set of measurements showed that the energy consumption was 1.01 MJ/kg beet, which was 20% higher than intended, but at the same time energy savings were about 30% lower with respect to the values before the reconstruction.

scholarly journals Energy benchmarking in educational buildings in the city of Kragujevac - possibilities for energy efficiency improvement

2021 ◽  
Vol 18 (1) ◽  
pp. 95-114
Author(s):  
Ana Radojevic ◽  
Danijela Nikolic ◽  
Jasna Radulovic ◽  
Jasmina Skerlic
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Co2 Emissions ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Energy Sources ◽  
Efficiency Improvement ◽  
Energy Efficiency Improvement ◽  
Energy Benchmarking

The implementation of energy efficiency measures and use of renewable energy sources in educational buildings can significantly contribute to reducing energy consumption, but also to CO2 emissions in the entire public sector. The paper shows the comparison of energy consumption indicators for 61 elementary school buildings which have previously been divided in 12 groups, according to the period of construction and size, based on the national typology called TABULA, as the first step of further study on how to use the renewable energy sources. The aim of this paper is to use the energy benchmarking process to select representative facilities which are suitable for applying renewable energy sources, for their further energy efficiency improvement. Indicators of annual specific electricity consumption and CO2 emissions per unit area [kWh/m2] and per user [kWh/user] were calculated. After that, from two groups (in which the highest electricity consumption and CO2 emissions are 68.37% and 74.53% of the total consumption/ emissions), one representative facility was selected.

Energy conservation opportunities: evidences from three industrial clusters in India

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Shankara Naik ◽  
Virupaxi Bagodi
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Driving Forces ◽  
Industrial Clusters ◽  
Modern Technology ◽  
Efficiency Improvement ◽  
Content Type ◽  
Energy Efficiency Improvement ◽  
Energy Auditing ◽  
Barriers To Energy Efficiency

Purpose The purpose of the paper is to examine the monitoring of electrical energy consumption, measures adopted for reducing energy consumption, barriers to energy efficiency improvement and driving forces for energy efficiency improvement in three industrial clusters. It is intends to capture the managerial perspectives on energy saving practices and to identify the possible energy saving opportunities in small and medium enterprises (SMEs). Design/methodology/approach Three industrial clusters were identified for the study. Research instrument based in-person survey was conducted in which the authors directly administered the questionnaire to all the 181 organisations. This was thought of to facilitate not so well-educated respondents. The survey took about six months in which 110 units responded. Descriptive statistics, exploratory factor analysis and path analysis were used to draw inferences. Findings There is ample scope for energy savings in the studied clusters. Energy efficiency in many organisations has deteriorated. Their attitude to embrace new or modern technology is shunning. Management’s belief that prevailing technology is efficient, lack of skilled labour, lack of accessibility to updated or modern technology, and lack of compatibility of new technology are found to be the barriers to energy efficiency improvement. Benchmarking by appropriate governments and publicly financed energy auditing act as the driving forces. Originality/value The SMEs must use simple yet powerful energy auditing practices on regular basis to reduce energy consumption. This will not only result in lesser energy costs but also lessen the burden on environment. As these are predominantly small enterprises, appropriate governments interventions are essential to bring the desired change.

Energy Performance Benchmarking of Process Refrigeration Units

2021 ◽  
Author(s):  
Saqib Sajjad ◽  
Haseeb Ali
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Performance ◽  
Coefficient Of Performance ◽  
Efficiency Improvement ◽  
Performance Benchmarking ◽  
Energy Efficiency Improvement ◽  
Processing Plants ◽  
Detailed Assessment ◽  
High Level

Abstract Process refrigeration units are one of the major energy consumers at gas processing plants. Owing to the higher energy consumption, evaluation and benchmarking of energy performance of the refrigeration units is very important for identification of energy saving opportunities. In this regard, an energy performance benchmarking study was performed by detailed assessment and evaluation of the existing process refrigeration units to identify potential of energy efficiency improvement. The study encompassed twenty-one (21) process refrigeration units installed at five (05) different sites. The methodology included collection and analysis of design & operation data and review of key variables like percent load, anti-surge valve opening, condensing temperature & pressure and chilling temperature etc. Energy Performance Indicators (EnPIs) considered for the benchmarking were compressor's specific energy, coefficient of performance (COP) and relative COP (RCOP). A thermodynamic model was developed for each unit to ascertain the refrigeration load. Instead of usual high level benchmarking techniques, the study considered unit and equipment level benchmarking which provided better insight of the systems and helped in finding opportunities for energy efficiency improvement. Further, COP which is generally considered as a benchmarking EnPI, only considers refrigeration load and energy consumption, whereas, this study introduced a new EnPI named "Relative COP" which additionally takes into account the chilling and condensing temperatures and gives true energy performance benchmarking.

Energy Efficiency Improvement of Water Hydraulic Fluid Switching Transmission

2014 ◽  
Vol 8 (5) ◽  
pp. 733-744 ◽  
Author(s):  
Pha N. Pham ◽  
◽  
Kazuhisa Ito ◽  
Shigeru Ikeo ◽  
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Net Energy ◽  
Hydraulic Fluid ◽  
Efficiency Improvement ◽  
Working Pressure ◽  
Energy Efficiency Improvement ◽  
Reference Velocity ◽  
Reduce Energy Consumption ◽  
Water Hydraulic

This study aims to determine effective methods for improving the energy efficiency of a water hydraulic Fluid Switching Transmission (FST). This paper introduces three methods to reduce energy consumption: lowering the velocity of the electric motor and stopping the motor during the working and deceleration phases, respectively (first method); restricting the working pressure within a certain range by using an unload valve (second method) or using the idling stop method (third method). Next these three methods are analyzed and compared. Experimental results show that by using the proposed methods, the energy and net energy consumption are greatly reduced. The greatest reductions are from 71.5 to 78.3% for energy consumption and from 65.1 to 66.2% for net energy consumption, corresponding to variations in the reference velocity from 600 to 1000 min-1. Additionally, the steady state errors in the proposed methods are slightly decreased in the working phase while the transient responses are almost the same for all cases.

scholarly journals Impact of an Energy Monitoring System on the Energy Efficiency of an Automobile Factory: A Case Study

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2577 ◽  
Author(s):  
Tehseen Akhtar ◽  
Asif Ur Rehman ◽  
Mohsin Jamil ◽  
Syed Omer Gilani
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Real Time ◽  
Quality Data ◽  
Efficiency Improvement ◽  
Data Logging ◽  
Energy Monitoring ◽  
Energy Efficiency Improvement ◽  
Automobile Factory ◽  
Consumption Data

Energy-saving strategies cannot be implemented without having detailed and regular power consumption data of a facility. The installation of an energy monitoring and data logging system can help in planning energy efficiency improvement policies by providing daily, monthly, and yearly energy consumption reports and graphs. The purpose of this study was to demonstrate the impact of an energy monitoring and management system on the improvement of energy efficiency in the industrial sector of developing countries. This study introduced an energy monitoring and data logging system installed in an automobile factory in Pakistan. Energy consumption data, which also included power quality data, were collected with the help of energy analyzers and transmitted to a centralized supervisory control and data acquisition (SCADA) software for data logging and monitoring purposes. This system was developed by combining Modbus with industrial Ethernet to communicate real-time energy consumption data of the factory to multiple local and remote locations. Monitoring and logging the real-time energy consumption data helped the user to find the significant energy losses inside the factory and to implement various energy conservation policies inside the facility, resulting in energy efficiency improvement. The energy consumption results indicate that the proposed system can help achieve an approximately 8% improvement in energy efficiency.

scholarly journals A New Cooperative MIMO Scheme Based on SM for Energy-Efficiency Improvement in Wireless Sensor Network

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Yuyang Peng ◽  
Jaeho Choi
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Sensor Node ◽  
Multiple Input Multiple Output ◽  
Wireless Sensor ◽  
Efficiency Improvement ◽  
Energy Efficiency Improvement ◽  
Size Limitation ◽  
Multiple Input ◽  
Input Multiple Output

Improving the energy efficiency in wireless sensor networks (WSN) has attracted considerable attention nowadays. The multiple-input multiple-output (MIMO) technique has been proved as a good candidate for improving the energy efficiency, but it may not be feasible in WSN which is due to the size limitation of the sensor node. As a solution, the cooperative multiple-input multiple-output (CMIMO) technique overcomes this constraint and shows a dramatically good performance. In this paper, a new CMIMO scheme based on the spatial modulation (SM) technique named CMIMO-SM is proposed for energy-efficiency improvement. We first establish the system model of CMIMO-SM. Based on this model, the transmission approach is introduced graphically. In order to evaluate the performance of the proposed scheme, a detailed analysis in terms of energy consumption per bit of the proposed scheme compared with the conventional CMIMO is presented. Later, under the guide of this new scheme we extend our proposed CMIMO-SM to a multihop clustered WSN for further achieving energy efficiency by finding an optimal hop-length. Equidistant hop as the traditional scheme will be compared in this paper. Results from the simulations and numerical experiments indicate that by the use of the proposed scheme, significant savings in terms of total energy consumption can be achieved. Combining the proposed scheme with monitoring sensor node will provide a good performance in arbitrary deployed WSN such as forest fire detection system.

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