Air Mizer TM Air Consumption Data

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Evan Parsons
5 years ago
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2 Air Mizer TM Air Consumption Data System ran for 1.0 minute with no product in the system With Standard Air Assist 72 SCFM With Air Mizer 2 SCFM Then ran several 5,238 pound batches through a 4 Convey line With Std. Air Assist With Air Mizer Average Convey Time: 8.5 Minutes 8.71 Minutes Average Air Consumed: 673 Ft Ft. 3 Average SCFM: Savings on Air Consumption with Air Mizer: 211 Cubic Feet of air for 5,238 pound batch equals 80 cubic feet of air per ton of batch delivered.

3 AIR MIZER vs. STANDARD AIR ASSIST POWER CONSUMPTION The following is an example of the reduced air consumption of a typical system using Air Mizer air assists rather than standard Nol-Tec air assists. This reduced air consumption results in lowered power costs. Air Mizers do cost more than standard air assists (approximately $150 ea.), which is a one-time cost, while the power cost savings continue as long as the system is in operation. Given: System is designed for 15 TPH of new 400 convey distance. 40 Cu. Ft. transporter and 5 line with 4 bends. Line has 20 standard Air Assists. System runs 16 hrs/day, 5 days/wk, 50 weeks/year (4,000 hrs/yr) Compressor delivers 4.5 SCFM per 1 horsepower. 1 horsepower-hour = kilowatt-hour (kwh). The cost of commercial electrical power is $0.07/KwH. System air consumption is 409 SCFM during a 6.9 minute conveying cycle (2,822 SCF/Cycle). The average air 15 TPH is 353 SCFM. Air Mizers reduce air consumption by approximately 15% vs. standard air assists. Then: 353 SCFM Hr x kwh = 58.5 kwh to operate every hour 4.5 Hp per SCFM 1 Hp Hr 58.5 kwh x 4,000 Hr/Yr = 234,000 kwh to operate every year 234,000 kwh/year x $0.07 kwh = $16,380 to operate every year If Air Mixers are used, a 15% air & power reduction would be seen. $16,380/Year x 15% = $2, in power savings per year using Air Mizers. The estimated initial additional system cost for the Air Mizers would be $$3, The example does not take into account the reduced cost of a smaller compressor, or the reduced costs associated with reduced system wear due to reduced air velocity. F:/APPS/WINWORD/SALES/MIKE/TECH ISSUES/AIR MIZER vs STD POWER.doc

4 APPLICATION OF AIR MIZER TECHNOLOGY Most dense phase systems supplied by NOL-TEC include the use of the exclusive Air Assists, which are strategically placed along the conveying line to distribute energy throughout the system, consequently reducing friction. The high pressure manifold design (using pilot regulators), with volume control valves at each unit, provide maximum system flexibility, while preventing back-feeding. In a true dense phase conveying system, material flows through the conveying line in a series of slugs. These slugs vary in length, with pockets of air (also of varying lengths) found in between the slugs. This results in varying pressures in the conveying line. In addition, as with all positive pressure pneumatic conveying systems, the pressure in the conveying line is lower at the end of the system than at the beginning. This is due to less resistance. When NOL-TEC designs a dense phase conveying system, there is a safety factor used when determining the amount of air required for reliable conveying. Air Assists provide the insurance so air consumption can be reduced without sacrificing reliability. In order to simplify the design of the system, a single solenoid is used to energize all Air Assists simultaneously. The ideal design for Air Assists would be such that they only came on when needed. That is, they would sense that material resistance has increased, indicating a potential plug. They would then turn on to prevent the plug from occurring. After the plugging condition is eliminated, the Air Assists would automatically turn off. NOL-TEC s Air Mizer Air Assist was designed and developed specifically to combine the reliability of the standard Air Assist, with the ability to turn off automatically when not needed. This results in reduced system air consumption and the associated cost savings. Air Mizers automatically recognize an increase or decrease in the internal pressure of the conveying line, and turn on or off accordingly. This results in substantial reductions in air consumption. Depending upon the material being handled, distance, and rate, the reduction could be 12% to 15%. Over a year of operation time, the cost savings on energy alone would be very substantial. Additional savings are seen in reduced component wear, especially when handling abrasive materials. There are no definite rules for using Air Mizer Air Assists, however they are normally used in longer systems (over 300 feet) to reduce air consumption. Notes:

5 **FOR IMMEDIATE RELEASE ** FOR IMMEDIATE RELEASE** NOL-TEC s Model 335 Air Mizer TM Air Assist Technology NOL-TEC is proud to introduce the Air Mizer TM, a revolutionary approach to Air Assist TM technology. Much like NOL-TEC s current Air Assist model, the Air Mizer is designed to strategically introduce air into a pneumatic conveying line at a regulated pressure and volume. The Air Mizer takes this concept one step further as it has been designed to introduce air only when the back pressure, which is caused by product being conveyed, reaches a predetermined resistance at the Air Mizer. As a result, these unique air injection assemblies significantly reduce overall air consumption, effectively control the material-to-air ratio, and maintain gentle, low speed dense flow within the convey line. For More Information Contact: Nancy Imbrone NOL-TEC SYSTEMS 425 Apollo Drive Lino Lakes, MN Phone: , Ext. 235 Fax: sales@nol-tec.com

Pneumatic blending in a bin or silo that is, aerating. Saving time, labor, and money with pneumatic batch blending

Pneumatic blending in a bin or silo that is, aerating. Saving time, labor, and money with pneumatic batch blending As appeared in January 2013 PBE www.powderbulk.com Saving time, labor, and money with pneumatic batch blending Mike Weyandt Nol-Tec Systems With a pneumatic blender, you can mix batches of dry bulk materials