Archive | October, 2013

233

2:24 pm
October 28, 2013
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Vortex Improves Clear Action Gate Valve

ClearActionV2Vortex Corp. announces three improvements to its Clear Action gate valve. First, the valve body can now be sealed, preventing material leakage into the space around the valve. Second, the valve’s air purge mechanism now reduces material migration into the valve body. Finally, to ease maintenance, shims can now be added or removed while the valve is in-line.

Vortex’s self-cleaning Clear Action gate valves handle powders, granular material or pellets in gravity flow or pneumatic conveying systems. Mounted horizontally, the machined square-edged blade mechanically clears the material from the sealing surfaces on each closing cycle, allowing it to discharge beneath the valve.  The square blade and seal design eliminates the open cavities where material collects in traditional gate valves. For more information, click here.

Salina Vortex Corp.
Salina, KS

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176

2:19 pm
October 28, 2013
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Additional, Larger IEC Motor Controls Available from AutomationDirect

automationdirectAutomationDirect’s GH15 series of electric contactors now includes larger frame sizes, ranging from 79 mm to 145 mm (3.1 to 5.7 in.). In addition, models are now available up to 315 Amps. GH15 series IEC motor controls feature self-lifting pressure plate terminals for quick wiring terminations. Actuator coils in 110/220 V and 220/240 V, 60Hz models accommodate most applications. Now available in IEC sizes ranging from B to TT, GH15 series contactors accommodate up to 250 Hp (186 kW) motors at 460 VAC. Contactors are 35 mm DIN-rail mountable and panel mountable (larger sizes) to provide fast and easy installation. The GH15 series  has a one-year warranty and are CE marked, cULus listed, RoHS and REACH compliant. To see the full line of GH15 series contactors, click here or call 800-663-0405.

AutomationDirect
Cumming, GA

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191

2:15 pm
October 28, 2013
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Two Thomas & Betts Compression Connector Brands Are Now One: Blackburn®

blackburnTwo Thomas & Betts brands of compression connectors, Blackburn® and Color-Keyed®, are now being brought to market simply as Blackburn. (The official full name is Blackburn Featuring the Color-Keyed System.) The Blackburn connector brand is widely used in construction, while the Color-Keyed ® brand is better-known in industry.

In addition to a comprehensive line of Blackburn compression connectors, the line includes overhead, grounding and mechanical connectors for a broad range of applications. The Blackburn System tooling uses hexagonal color-coded dies to compress conductors for a secure electrical bond. 

For more information about Blackburn compression connectors from Thomas & Betts, visit www.tnb.com and look for Blackburn® on the “Brands” tab, or call (800) 816-7809.

Memphis, TN
Thomas & Betts Corporation

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193

10:44 pm
October 19, 2013
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Uptime: ISO 55000: Management Systems For Asset Management, Part I

bob williamson thumb thumbBy Bob Williamson, Contributing Editor

Facilities and equipment management is about to be taken to a whole new level with the release of ISO 55000 Asset Management Standard scheduled for early 2014. Or is it? The long-awaited rollout of this new global standard might not be what many are assuming it will be. Then again, maybe it will. That’s the way it is with the introduction of global standards. Remember the launch of ISO 9000 and ISO 14001?

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254

7:28 pm
October 9, 2013
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My Take: Regarding Reliability — Enlightenment Matters

newjaneresizeBy Jane Alexander, Deputy Editor

The Texas A&M Turbomachinery and Pump Symposia in Houston was full of it: the “R” word, that is. It showed up, in some shape, form or fashion, in technical sessions, networking affairs, casual conversations, printed and electronic materials, exhibitor-booth signage, you name it. Whether or not the event organizers planned it that way, “reliability” (or, more precisely, the endless quest for it) seemed to be an underlying theme among this year’s attendees and exhibiting companies—just as it is in your plants, day in and day out.

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2

7:20 pm
October 9, 2013
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Uptime: ISO 55000: Management Systems For Asset Management, Part I

bob williamson thumb thumbBy Bob Williamson, Contributing Editor

Facilities and equipment management is about to be taken to a whole new level with the release of ISO 55000 Asset Management Standard scheduled for early 2014. Or is it? The long-awaited rollout of this new global standard might not be what many are assuming it will be. Then again, maybe it will. That’s the way it is with the introduction of global standards. Remember the launch of ISO 9000 and ISO 14001?

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1130

7:18 pm
October 9, 2013
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Compressed Air Challenge: Dry Compressed Air Efficiently

04cacBy Ron Marshall, for the Compressed Air Challenge (CAC)

Air is like a sponge: It soaks up as much moisture as it can hold. When moisture-laden air is sucked into the intake of an air compressor and squeezed, like a sponge, it releases the moisture it has absorbed. If left untreated, this moisture will flow downstream with the compressed air. As it flows, it will gather the dust, rust and lubricant that exist on the compressed air piping walls and form a soupy mix that contaminates downstream equipment.

In an effort to prevent this contamination from occurring, compressed air is normally dried and filtered at various strategic points before it’s sent to plant end-uses. The type of air dryer and level of filtration varies, depending on the quality of compressed air required. (In general, the better the quality of air required, the more expensive it is to produce.)

Refrigerated air dryers and desiccant air dryers are two of the most common types.

Refrigerated air dryers…
These types of dryers cool air to near the freezing point of water using a refrigeration circuit and a heat exchanger. As the air cools, water condenses out of it and is removed via a water separator. This produces a dew point (the temperature at which the moisture within air starts to condense) of between 35 and 40 F. It is the refrigeration circuit in these dryers that consumes most of the energy; a smaller amount of energy is lost due to pressure differential. Rated specific power on these units is about 0.8 kW/100 cfm.

Desiccant dryers…
These types of dryers use a moisture-adsorbing material, such as activated alumina, to remove water molecules from the air stream. Most models incorporate two separate vessels containing desiccant: When one vessel is drying, the other is regenerating to remove adsorbed moisture. Once regeneration is finished, the dryer automatically switches sides. The regeneration process consumes most of the energy in desiccant dryers; a small amount of energy is lost due to pressure differential. These types of units typically produce compressed air with dew points of -40 F. Rated power consumed ranges from 2.0 to 3.0 kW per 100 cfm.

The key to energy efficiency of compressed air dryers is realizing that standard units consume near full power—even at light (or zero) loads. Because such dryers are usually sized for the worst-case scenario (i.e., the hottest, most humid day, when the compressor is at full load), the average loading at normal conditions is typically much less than the dryer rating. Thus, it’s desirable to select a dryer that can turn its energy down with reduced loading. A second benefit can be gained if the dryer has a low-pressure differential.

Cycling or thermal-mass refrigerated dryers reduce energy with reduced loading. For desiccant dryers, the use of dew-point controls or capacitive sensing of the desiccant moisture content will reduce wasted energy from unnecessary regeneration cycles. Often, the choice of these strategies will pay for themselves very quickly.

More information on this topic and others can be found in the Library section of the CAC Website, or in our Best Practices for Compressed Air Systems Manual. MT

The Compressed Air Challenge® is a partner of the U.S. Department of Energy’s Industrial Technology programs. To learn more about its many offerings, log on to www.compressedairchallenge.orgor email: info@compressedairchallenge.org.

 

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