Compressed Air Best Practices - October 2008 - (Page 17) Focus Industry AUTOMOTIVE TRANSIT | 10/08 | All air dryers have been converted to cycling style, with the refrigeration systems now running only when required, in response to actual dryer moisture loading. Dryer filters have been converted to mist eliminator type with the low pressure differential making compressor control more efficient and reducing the required compressor discharge pressure, which lowers power consumption. The trim compressors are located internal to the plant which means heat of compression can now be used in winter months to displace natural gas heat. Based on current plant loading, this is saving New Flyer about 36,000 cubic meters of natural gas worth $12,000 annually at current costs and reducing greenhouse gas emissions. Maintenance Reductions and Plant Reliability Previous to the project, the plant maintenance personnel could not take any one compressor down during the normal production day without risking plant pressure problems. This meant that regular compressor service had to be done during weekends or at night where maintenance costs were a premium. And when disaster happened, and a compressor would fail, production would be affected, necessitating the emergency rental of an expensive diesel compressor. The new system now has the capacity to provide adequate plant pressure with one compressor out of service. This significantly reduces maintenance costs and decreases the frequency of plant pressure issues. 3000 3800 USG USG M Eliminator Refrig ist Filter Dryer 1200 cfm 1000 cfm Paint System 100 HP 125 psi 410 cfm Fixed Speed 128 psi VSD 126 psi 115 psi 114 psi 110 psi Breathing Air 100 HP VSD 125 psi 410 cfm New Flyer New Connection Diagram 17 http://www.mikroporamerica.com http://www.mikroporamerica.com
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