A review on compressed-air energy use and energy savings
Document Type
Article
Publication Date
1-1-2010
Abstract
Compressed-air systems account for about 10 of total industrial-energy use for few selected countries as found in literatures. Compressed air is typically one of the most expensive utilities in an industrial facility. This paper describes a comprehensive literature review about compressed air energy use, savings, and payback period of energy efficient strategies. This paper compiles latest literatures in terms of thesis (MS and PhD), journal articles, conference proceedings, web materials, reports, books, handbooks on compressed air energy use, efficiency, energy savings strategies. Computer tools for compressed air analysis have been reviewed and presented in this paper. Various energy-saving measures, such as use of highly efficient motors, VSD, leak prevention, use of outside intake air, reducing pressure drop, recovering waste heat, use of efficient nozzle, and use of variable displacement compressor to save compressed-air energy have been reviewed. Based on review results, it has been found that for an electric motor used in a compressed-air system, a sizeable amount of electric energy and utility bill can be saved using high efficient motors and applying VSDs in matching speed requirements. Also, significant amounts of energy and emission are reducible through various energy-saving strategies. Payback periods for different energy savings measures have been identified and found to be economically viable in most cases.
Keywords
Compressed-air systems, Economic analysis, Emission reduction, Energy savings, Computer tools, Electric energies, Energy efficient, Energy saving, Energy savings measures, Energy savings strategies, Energy use, Energy-saving measures, Industrial facilities, Intake air, Journal articles, Literature reviews, Matching speed, Payback periods, Utility bills, Variable displacement compressor, Web materials, Air intakes, Caissons, Cold storage, Compressed air, Energy conservation, Investments, Motors, Pneumatics, Pressure vessels, Waste heat, Energy conversion.
Divisions
fac_eng
Publication Title
Renewable and Sustainable Energy Reviews
Volume
14
Issue
4
Publisher
Elsevier
Additional Information
574NO Times Cited:19 Cited References Count:108