Heatless Regenerative Dryers

Why Dry Air?

A compressor takes in atmospheric air loaded with contaminants and moisture. At 75°F/23.9°C and 75% relative humidity, a 500 SCFM/850 NM³/HR air compressor takes in about 90 gallons/340.6 liters of water in vapor form during a 24-hour period. An aftercooler condenses about half. As the air flows from the compressor into the distribution lines, it cools. The vapor condenses causing rust, scale, and ultimately leaks in pipes, valves, instruments, and air-operated tools and equipment. Moreover, when exposed to freezing temperatures, the moisture in air lines will freeze and restrict air flow. A typical PIONEER dryer pays for itself in less than a year by reducing and eliminating maintenance costs and downtime.

Activated AluminaThe high performance, -100°F Activated Alumina Plus is standard in PIONEER Regenerative dryers. It is available in 1/8", 3/16", and 1/4" sizes and shipped in 40 lb. mini-drums or 50 lb. bags.

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Heatless Regenerative Dryers

The PIONEER PHL and SHL Series, extremely simple and efficient in design, use dry compressed air for regeneration. The hard, attrition-resistant activated alumina is contained in two towers. While the compressed air is being dried in one tower, the desiccant in the other tower is reactivated. For regeneration of the desiccant, a small amount of the dried air (from the drying tower) is expanded to near atmospheric pressure in the regenerating tower. The dry air becomes super dry on expansion and readily adsorbs the moisture from the saturated desiccant bed. Because these dryers do not require a heater or blower and use counter-flow regeneration, they offer maximum reliability. Desiccant replacement every few years is about the only maintenance cost. Dewpoints down to -100°F/- 73.3°C are attainable.

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Standard Features - PHL Series

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Optional Features - PHL Series

1. Best-Aire Economy Silver, Gold, or Diamond
2. -100°F PDP
3. Visual moisture indicator
4. High humidity alarm
5. Purge flow meter
6. Demand cycle control
7. Dewpoint meters PDM Universal and PDM Ultra
8. All pnuematic control
9. Audible alarms
10. High pressure dryers to 5000 PSIG
11. Low pressure dryers
12. Filters, mounted/unmounted
13. NEMA 7 electrical
14. Bypass arrangement
15. Nonstandard voltage

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Diagnostic Control Panel

The Diagnostic Control Panel provides more precise dewpoint control, adds diagnostic capability and improves reliability. It indicates the sequence of operation for both towers. The on/off switch, power on light and the failure to shift alarm are also included. The NEMA 4 control panel is standard in PHL and HDS series dryers. It is also standard in SHL series dryers with Demand Cycle Control.

Demand Cycle Control (Optional)

To save on purge loss and energy, you may control your dryer by sensing exit air dewpoint in lieu of timecycle. The demand cycle control reduces purge loss in proportion to air usage and moisture content. Demand cycle control is available with PDM Universal (standard) or PDM Ultra (optional) sensor.

Advantages:

1. Better Sensors -Both PDM Ultra and PDM Universal use high-capacitance aluminum oxide sensor. The PDM Universal sensor is water resistant, allowing for reliable performance in wetter environments. Both sensors are protected with a prefilter and adsorber.
2. Installation - Sensor is installed at a cleaner location and protected at inlet and outlet.
3. Easy Calibration - Designed for convenient and inexpensive calibration at job site.
4. More Reliable - Less frequent tower switching means longer component and desiccant life.
5. Better Dewpoint Control - By reading the exit air dewpoint the sensor also monitors
   the dewpoint of outgoing air.
6. Cost Savings Example:
   • Design conditions:$ 1000 SCFM at 100 PSIG and 100°F
   • Purge flow 14% = 140 SCFM
   • Cost of regeneration without demand cycle, based on 4.5 SCFM/HP and $.07/KWH cost: (140 / 4.5) x (0.746) x 24 x 0.07 = $39.00 a day.

   If the average flow is 500 SCFM at 100 PSIG and 100°F inlet, the regeneration cost with demand cycle = (70 / 4.5) x (0.746) x 24 x 0.07 = $19.50 a day

Savings = $39.00 - $19.50/day or approximately $7000/year. Pay back less than six months

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Correction Factors and Purge Loss Example

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PHL Specifications

The dryer shall be capable of drying ______SCFM/NM of air at 100 PSIG/6.9 BAR G and 100°F/37.8°C inlet conditions down to -40°F/-40° C PDP on a continuous and automatic basis. The vessels over 6Ó/152mm diameter shall be ASME coded. Each vessel shall have ______lbs/kg of high performance desiccant. Each vessel shall have its own pressure relief valve rated for the dryer capacity. The inlet valves shall be full port opening, air actuated, and non-lube. The inlet valves shall be serviceable without having to remove the dryer piping. A four-way dual solenoid valve shall control inlet valves. To reduce noise the dryer shall have two mufflers. The timing cycle shall be 10 minutes: 5 minutes drying, 4 minutes 30 seconds regenerating, and 30 seconds repressurization. The dryer shall be equipped with purge flow indicator and purge adjustment valve to minimize purge loss.The dryer shall be equipped with a computer controlled diagnostic control panel. It shall include sequence lights, on/off switch and indicator. The solid state controls and wiring shall be NEMA 4. The dryer shall have a 10-year limited warranty.The dryer shall be PIONEER model PHL_______.

Options:

Prefilter_____________________ Afterfilter____________________Alternate: Best Aire (filters and bypass): o Economy o Silver o Gold o Diamond o Carbon Adsorber-Alert o Micro-Coalescer o Demand Cycle o Dew Point Meter

The dryer shall be PIONEER model PHL_______.Options:Prefilter_____________________ Afterfilter____________________Alternate: Best Aire (filters and bypass): o Economy o Silver o Gold o Diamond o Carbon Adsorber-Alert o Micro-Coalescer o Demand Cycle o Dew Point Meter

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Notes:

1. * At 100°F/37.8°C, 100 PSIG/6.9 BAR G
2. Desiccant is factory filled through PHL1200, shipped separately in larger sizes.
3. -40°F/-40°C PDP is standard; -100°F/-73.3°C PDP is available
4. Standard voltage 115/1/60; nonstandard available
5. Cycle time 10 minutes
6. Maximum operating pressure 150 PSIG/10/35 BAR G; higher pressures available.

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Dewpoint Analyzer : Supplied with filter, two isolation valves, exhaust coil, adsorber and visual moisture indicator, sensor holder and cable.

Note : When selecting dryers, compare pressure dewpoints (PDP). Atmospheric dewpoint (ADP) has little practical value in selecting compressed air dryers because compressed air is under pressure.

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10-yr. Limited Warranty

Dryer vessels, refrigerant compressor (HDS Series), and heat exchanger (HDS Series) in standard units are warranted for 10 years, prorated. PIONEER standard dryers are warranted to be free from defects in material and workmanship for a period of one year from the date of shipment (15 months for distributor stock units), provided the equipment is installed and used according to the company's recommended usage. Liability is limited to the repair, refund, or replacement in kind at the company's sole option. In no event shall PIONEER be liable or responsible for incidental and consequential damages, even if the possibility of such has been made known to the company. The usual maintenance and replacement-type products are not covered by this warranty.

To protect the warranty, use genuine PIONEER accessories and spare parts.
One year mechanical parts only warranty applies to equipment outside the U.S.A., Mexico, and Canada.
Guaranteed Trade-In Value and Extended Warranty - consult factory.
Product Liability Insurance Coverage - Provided.
Contact your local distributor or call Pioneer toll-free to receive information on Pioneer's Innovative Quality Systems:Compressed Air Drying & Filtration Systems Rotary Dehumidification Systems Water Cooling Systems CNG Drying Systems*Breathing Air Purification Systems** Provided by Pioneer Engineering, Inc.Information provided is deemed current at the time of publication. The company disclaims all liability for any errors resulting in loss or damage.

Money Back Guarantee

If you are not completely satisfied with your PIONEER equipment, you may return it within 60 days of the shipment date from the factory. The distributor will be refunded the purchase price paid to PIONEER. Special built equipment, equipment damaged or abused, handling, installation, incidental, consequential, profit margins, freight, spare parts, and equipment valued over $15,000 list price are excluded from this offer.

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