Compressed Air Best Practices - March 2009 - (Page 38) ® | 03/09 Focus Industry ENERGY MANAGEMENT | DEMAND-SIDE SYSTEM OPTIMIZATION: POINT-OF-USE A I R C Y L I N D E R S , VA LV E S , D I S T R I B U T I O N A N D S T O R A G E The chart below shows process air flow, plant air flow and storage pressure. As previously mentioned, the average flow to process is about 8000 scfm with peaks to 9000 scfm. Plant air averages about 5500 scfm with peaks to 6700 scfm. Plant air peaks are from pneumatic transfer. Bottom chart is a closer look showing how the pneumatic transfer effects the plant flow and storage pressure. Dense phase transfer is the single largest event that occurs in this plant (barring a compressor failure). One line uses pneumatic transfer while the other line uses a mechanical transfer method. Hopefully there will never be an overlap of the two. An overlap would cause a very large draw-down in storage that would dip below the setpoint of the flow controller to plant air and impact production. With the present transport flow, the pressure in the storage tanks does go below the 97 psig setpoint where the automation will start a recip. The chart below shows just how often a recip starts and stops. The data above shows the two recips contribution to the electrical cost. Each time the transport is on, the pressure drops and a recip starts. The total for one year would be $19,634. We assume that the 7 days of data collection are typical of the whole year. An alternative might be to dedicate a low pressure compressor to the transfer. Since transfer only requires 36 psig, it might be cost effective to purchase a singlestage, oil-free rotary screw compressor. Most will go to 45 psig. The 1000 to 1500 scfm required for transfer will not impact the plant pressure any longer. The savings would be the energy costs from above, plus reduced maintenance and cooling water costs required to keep the recips ready. For more information contact Frank Moskowitz, Draw Professional Services, tel: 480-563-0107, email: fmoskowitz@drawproservices.com 38 38 www.ai b estpractices.com www.airbestpractices.com http://www.airbestpractices.com
Table of Contents Feed for the Digital Edition of Compressed Air Best Practices - March 2009 Compressed Air Best Practices - March 2009 Contents From the Editor Utility-Air News Compressed Air Audit of the Month Air Standards Assessment Improves Electroplater Production and Saves Energy Demand-Side System Optimization Seven Sustainability Projects for Industrial Energy Savings Personal Productivity Resources for Energy Engineers Wall Street Watch Advertiser Index Classifieds Compressed Air Best Practices - March 2009 Compressed Air Best Practices - March 2009 - Compressed Air Best Practices - March 2009 (Page Cover1) Compressed Air Best Practices - March 2009 - Compressed Air Best Practices - March 2009 (Page Cover2) Compressed Air Best Practices - March 2009 - Compressed Air Best Practices - March 2009 (Page 3) Compressed Air Best Practices - March 2009 - Contents (Page 4) Compressed Air Best Practices - March 2009 - Contents (Page 5) Compressed Air Best Practices - March 2009 - From the Editor (Page 6) Compressed Air Best Practices - March 2009 - Utility-Air News (Page 7) Compressed Air Best Practices - March 2009 - Utility-Air News (Page 8) Compressed Air Best Practices - March 2009 - Utility-Air News (Page 9) Compressed Air Best Practices - March 2009 - Compressed Air Audit of the Month (Page 10) Compressed Air Best Practices - March 2009 - Compressed Air Audit of the Month (Page 11) Compressed Air Best Practices - March 2009 - Compressed Air Audit of the Month (Page 12) Compressed Air Best Practices - March 2009 - Compressed Air Audit of the Month (Page 13) Compressed Air Best Practices - March 2009 - Compressed Air Audit of the Month (Page 14) Compressed Air Best Practices - March 2009 - Compressed Air Audit of the Month (Page 15) Compressed Air Best Practices - March 2009 - Compressed Air Audit of the Month (Page 16) Compressed Air Best Practices - March 2009 - Air Standards (Page 17) Compressed Air Best Practices - March 2009 - Air Standards (Page 18) Compressed Air Best Practices - March 2009 - Air Standards (Page 19) Compressed Air Best Practices - March 2009 - Air Standards (Page 20) Compressed Air Best Practices - March 2009 - Assessment Improves Electroplater Production and Saves Energy (Page 21) Compressed Air Best Practices - March 2009 - Assessment Improves Electroplater Production and Saves Energy (Page 22) Compressed Air Best Practices - March 2009 - Assessment Improves Electroplater Production and Saves Energy (Page 23) Compressed Air Best Practices - March 2009 - Demand-Side System Optimization (Page 24) Compressed Air Best Practices - March 2009 - Demand-Side System Optimization (Page 25) Compressed Air Best Practices - March 2009 - Demand-Side System Optimization (Page 26) Compressed Air Best Practices - March 2009 - Demand-Side System Optimization (Page 27) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 28) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 29) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 30) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 31) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 32) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 33) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 34) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 35) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 36) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 37) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 38) Compressed Air Best Practices - March 2009 - Seven Sustainability Projects for Industrial Energy Savings (Page 39) Compressed Air Best Practices - March 2009 - Personal Productivity (Page 40) Compressed Air Best Practices - March 2009 - Personal Productivity (Page 41) Compressed Air Best Practices - March 2009 - Personal Productivity (Page 42) Compressed Air Best Practices - March 2009 - Resources for Energy Engineers (Page 43) Compressed Air Best Practices - March 2009 - Resources for Energy Engineers (Page 44) Compressed Air Best Practices - March 2009 - Resources for Energy Engineers (Page 45) Compressed Air Best Practices - March 2009 - Wall Street Watch (Page 46) Compressed Air Best Practices - March 2009 - Wall Street Watch (Page 47) Compressed Air Best Practices - March 2009 - Wall Street Watch (Page 48) Compressed Air Best Practices - March 2009 - Advertiser Index (Page 49) Compressed Air Best Practices - March 2009 - Classifieds (Page 50) Compressed Air Best Practices - March 2009 - Classifieds (Page Cover3) Compressed Air Best Practices - March 2009 - Classifieds (Page Cover4)
For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.