Compressed Air Best Practices - September 2008 - (Page 41) Focus Industry FOOD PACKAGING & PROCESSING | 09/08 | 7. System Cost Blower systems cost more than compressed air amplifier systems simply because a blower is required. Larger systems may cost significantly more if a separate location is required for the blower due to noise level concerns. Blowers also carry costs for spare parts. The operating cost for amplifiers is the cost of compressed air. Compressed air amplifying units use small gaps to allow a small amount of compressed air to be used and their special-designed profile and shape entrains ambient air, essentially converting pressure to flow. They can go on and off as required using solenoid valves and pressure switches or other sensors to minimize the operating cost. 8. Maintenance and Operating Cost Compressed air operated amplifier blow-off systems have no real maintenance cost as long as there is proper oil and particulate filtration of the compressed air. One must also maintain the automatic drains on the filters. Blower systems must ensure that the blower is maintained in good working order and spare parts are on hand just in case. Summary In deciding on a blow-off method, one cannot consider only energy costs. Each application must be considered on its own merits. It depends upon what is important in each situation. The recommendation is to consider all the factors listed in this article and then make a decision. For more information, please contact Les Rapchack, at email: lesr@nex-flow.com, www.nex-flow.com Downtime is money. 24/7/365 Emergency Response When it comes to your productivity, every second counts. So Aggreko is always ready to fulfill your emergency utility needs with custom oil-free compressed air rental solutions. Next time an emergency hits, call us before it hits your bottom line. 800.AGGREKO aggreko.com/northamerica Power generation Temperature control Oil-free compressed air www.airbestpractices.com 41 http://www.nex-flow.com http://aggreko.com/northamerica http://aggreko.com/northamerica http://www.airbestpractices.com
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