scholarly journals Chapter 22: Compressed Air Evaluation Protocol. The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures

2017 ◽  
Author(s):  
Charles W Kurnik ◽  
Nathanael Benton ◽  
Patrick Burns
Keyword(s):  
Energy Efficiency ◽  
Compressed Air ◽  
Evaluation Protocol

Energy Efficiency Based Operation of Compressed Air System on Ships to Reduce Fuel 163 Consumption and CO2 Emission

2019 ◽  
Vol 161 (A2) ◽  
Keyword(s):  
Energy Efficiency ◽  
Fuel Consumption ◽  
Unit Cost ◽  
Leakage Rate ◽  
Compressed Air ◽  
Power Requirement ◽  
Important Indicator ◽  
Operating Load ◽  
Air System ◽  
Potential Energy Saving

Energy efficiency subject has been gaining importance in maritime sector. The compressed air is a valuable energy source in operational manner, by the reason of intrinsic lack of efficiency in pressurization process. Operational pressure and leakage rate are the major variables which affect operational efficiency of the system. This study aims to reveal potential energy saving for the compressed air system. To this end, several pressure ranges, 29-30 bars to 14-18 bars, and different leakage rates 2.4% to 45% are evaluated. After the data was obtained from ships, thermodynamic calculations had been carried out. Optimization of pressure saves 47.3% in daily power requirement, 58,2% in compressed air unit cost, 18.4 and 57.4 tons of reduction in fuel consumption and CO2 emissions in a year respectively. High leakage rates can cause 2.7 times more power and fuel consumption. Finally, operating load, as an important indicator of compressor, makes imperfections identifiable.

scholarly journals Energy auditing and energy saving measures in 'Zastava Automobili' factory

2009 ◽  
Vol 13 (1) ◽  
pp. 185-193 ◽  
Author(s):  
Dusan Gordic ◽  
Milun Babic ◽  
Dubravka Jelic ◽  
Davor Koncalovic ◽  
Nebojsa Jovicic ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Feasibility Studies ◽  
Hot Water ◽  
Compressed Air ◽  
Energy Sources ◽  
Energy Costs ◽  
Energy Audit ◽  
Energy Auditing ◽  
Economical Feasibility

This paper deals with energy audit procedure implemented on only Serbian car manufacturer 'Zastava Automobili'. Based on the results of energy auditing and performed technological and economical feasibility studies several energy saving measures were proposed. The measures are related to different energy sources: steam, hot water, compressed air, electricity, and water. Such energy efficiency programs reduce energy costs and increase production profitability of the factory.

scholarly journals Identification and Categorization of Factors Affecting the Adoption of Energy Efficiency Measures within Compressed Air Systems

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5116 ◽  
Author(s):  
Andrea Trianni ◽  
Davide Accordini ◽  
Enrico Cagno
Keyword(s):  
Decision Making ◽  
Energy Efficiency ◽  
Industrial Sector ◽  
Compressed Air ◽  
Decision Making Process ◽  
Heterogeneous Cluster ◽  
Factors Affecting ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
Industrial Energy Efficiency

Understanding the factors driving the implementation of energy efficiency measures in compressed air systems is crucial to improve industrial energy efficiency, given their low implementation rate. Starting from a thorough review of the literature, it is thus clear the need to support companies in the decision-making process by offering an innovative framework encompassing the most relevant factors to be considered when adopting energy efficiency measures in compressed air systems, inclusive of the impacts on the production resources and the operations of a company. The framework, designed following the perspective of the industrial decision-makers, has been validated, both theoretically and empirically, and preliminarily applied to a heterogeneous cluster of manufacturing industries. Results show that, beside operational, energetic, and economic factors, in particular contextual factors such as complexity, compatibility, and observability may highlight critical features of energy efficiency measures whose absence may change the outcome of a decision-making process. Further, greater awareness and knowledge over the important factors given by the implementation of the framework could play an important role in fostering the implementation of energy efficiency measures in compressed air systems. The paper concludes with further research avenues to further promote energy efficiency and sustainability oriented practices in the industrial sector.

Diagnostics for Developing Energy Efficiency Measures in Compressed Air Systems

2007 ◽  
Author(s):  
B. Gopalakrishnan ◽  
D. P. Gupta ◽  
Y. Mardikar ◽  
S. Chaudhari ◽  
J. Jadeja
Keyword(s):  
Energy Efficiency ◽  
Compressed Air ◽  
Energy Efficiency Measures ◽  
Efficiency Measures

Influence of Volumetric Capacity on Energy Consumption in Oil-Lubricated Compressed Air Systems

2016 ◽  
Vol 8 (4) ◽  
Author(s):  
Pawel Olszewski ◽  
Claus Borgnakke
Keyword(s):  
Mathematical Model ◽  
Energy Efficiency ◽  
Energy Consumption ◽  
Potential Energy ◽  
Uncertainty Analysis ◽  
Control Strategy ◽  
Energy Savings ◽  
Compressed Air ◽  
Numerical Code ◽  
Volumetric Capacity

The aim of this research is to estimate the influence of compressed air volumetric capacity on the energy consumption in systems equipped with oil-lubricated screw compressors. A mathematical model of oil-lubricated screw compressors has been proposed. The model is verified by comparing with real measurements, and overall uncertainty analysis is estimated. An in-house developed numerical code (c++) is used to calculate the energy consumption in 252,000 combinations. The final result can be used to estimate the energy efficiency of existing air systems and to assess potential energy savings due to changes in the operation of the system and its control strategy.

Study on Optimization of Pressure Ratio Distribution in Multistage Compressed Air Energy Storage System

2018 ◽  
Author(s):  
Shang Chen ◽  
Tong Zhu ◽  
Huayu Zhang
Keyword(s):  
Energy Efficiency ◽  
Energy Storage ◽  
Pressure Ratio ◽  
Storage System ◽  
System Optimization ◽  
Energy Storage System ◽  
Compressed Air ◽  
System Efficiency ◽  
Compressed Air Energy Storage ◽  
Ratio Distribution

Compressed air energy storage is an effective energy storage technology to solve the instability of wind power in distributed energy resources. In this paper, a multistage compressed air energy storage system optimization model is constructed based on the energy conservation equation. Then the system is optimized by differential evolution to improve the system efficiency. Optimal pressure ratios are proposed to distribute the pressures of compressors and expanders. The impact of pressure ratio distribution curve on the system energy efficiency suggests that the change curve of the characteristics vary in different heat exchanger performance. Results show that the change of thermal transfer reactor performance leads to the variety of optimal distribution pressure ratio and energy efficiency of the system. In addition, the differential ratio distribution factor can be effective on the pressure ratio of reasonable allocation. System efficiency optimization results increased by about 1% compared mean value.

scholarly journals New efficiency opportunities arising from intelligent real time control tools applications: the case of Compressed Air Systems’ energy efficiency in production and use

2019 ◽  
Vol 158 ◽  
pp. 4198-4203 ◽  
Author(s):  
Francesca Bonfá ◽  
Miriam Benedetti ◽  
Stefano Ubertini ◽  
Vito Introna ◽  
Annalisa Santolamazza
Keyword(s):  
Energy Efficiency ◽  
Real Time ◽  
Compressed Air ◽  
Real Time Control ◽  
Time Control
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