Compressed Air Best Practices - January 2009 - (Page 10)

| 01/09 Focus Industry ENERGY REBATES | CO2 O kW C onth of the M Air Audit d ompresse Nitr Nitrogen System Innovation at Boeing Boe Boeing Canada has replaced their on-site membrane style nitrogen generator with a new more mo modern system with increased capacity and higher efficiency. As a result, the company is now usin using minimal amounts of expensive liquid nitrogen and has reduced the energy cost per unit of gas produced by 83%. g C Marshall, By Ron anitoba Hydro M Nitrogen System novation In at BoeinTgCIM, E, In Inert Environment Required Bo Boeing uses nitrogen to provide an inert atmosphere for pressurizing the large autoclaves at the company’s Winnipeg production facility. These autoclaves operate like huge pressure cookers, heating and curing the various composite aircraft parts fabricated by production personnel. The parts made in Winnipeg are used on such high technology p products as the new Boeing 787 Dreamliner. These parts are baked in the autoclaves under a combination of heat, vacuum and pressure to ensure the layers of composite material successfully bond together to provide the necessary strength to form strong, safe and l lightweight aircraft fuselage parts. January Audit of the Month Where: Winnipeg, Canada Industry: Aircraft Part Fabrication Issues: Insufficient Nitrogen Volume and High Costs Audit Type: Nitrogen System for Autoclaves System Before Audit Annual Energy Use 2,150,000 kWh Equivalent CO2 Emissions 1,533 metric tons Annual Energy Cost $55,685 Annual Peak Demand Cost $19,115 Total Annual Energy Cost $74,800 System After Project Implementation: Annual Energy Use 491,500 kWh Equivalent CO2 Emisions 350 metric tons Annual Energy Cost $12,730 Annual Peak Demand Cost $0 Total Annual Energy Cost $12,730 Liquid Nitrogen Savings $30,000 Audit Savings (Annual): Reduction in Energy Use 1,658,500 kWh Reduction in CO2 Emissions 1,183 metric tons Equivalent CO2 for homes 157 homes Equivalent CO2 for vehicles 217 vehicles Total $ Savings $62,070 This massive autoclave requires 69,000 cubic feet of nitrogen at a flow rate of 3,450 cfm to fill to 100 psi in 20 minutes. 10 www.airbestpractices.com http://www.airbestpractices.com

Table of Contents Feed for the Digital Edition of Compressed Air Best Practices - January 2009

Compressed Air Best Practices - January 2009 Contents From the Editor Utility-Air News Compressed Air Audit of the Month: A Nitrogen Audit at Boeing Air Standards: New ASME & ISO Standards for Compressed Air System Assessments Energy Rebates Assist Industrial Sustainability Initiatives Seven Sustainability Projects for Industrial Energy Savings: Project #1: Lighting Optimization Minimum Supply Wire Size Recommendations for Compressor Packages Utilizing Variable Frequency Drives The Pneumatic Advantage: Pneumatics Bring Precision and Reliability to Furniture Industry Specialist Personal Productivity: Is Afternoon Fatigue Influencing Your Job Performance? The Explanation and Some Solutions. Resources for Energy Engineers: Training Calendar & Product Picks Wall Street Watch Advertiser Index Classifieds

Compressed Air Best Practices - January 2009

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