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Aircel HRS-L Series

Aircel HRS-L Series

$0.00
Heated Desiccant Air Dryers with Blower plus Cool-Down -40°F Dew Point (600-10000 scfm)

The Aircel HRE and HRS-L Heated Dryers blow atmospheric air over the desiccant bed to get rid of remaining water molecules and regenerate the desiccant. Process air is only consumed during depressurization and repressurization of the off-line tower and, in the case of the HRE, during cool-down of the regenerated bed.

This amounts to an average 2% of the rated capacity of the dryer. The less purge air used, means more dry air passed along for utility use.  Also, by reducing the purge air needed, it allows for a smaller compressor that requires less energy to run. The heated blower HRE/HRS-L dryers are the most efficient of all dryers to operate.

The HRE and HRS-L may have a higher initial cost than the heatless desiccant dryers, but they have substantially lower operating costs.  This saves money and results in a lower lifetime cost of the dryer.

• -40°F Dew Point Standard (Consult Factory for -100°F)
• Ambient Air Temperature 38°F - 125°F
• Inlet Air Temperature 40°F - 110°F
• Operating Pressure: 60 - 150 psig
• 1 Year Standard Limited Warranty

Pricing includes mounted prefilter and afterfilter, ASME code stamped filter housing, differential pressure gauge, automatic drain valve and initial filter element. If you have questions on how to properly select a compressed air dryer, contact our knowledgeable customer service toll-free: 866-650-1937 or send us an email request.






Aircel HRS-L Blowup
Product Selection
HRS-L-600 600 3 FLG 16 5 27 105 85 50 3222 1060

Call For Pricing

Model Capacity1 (scfm) Connection ANSI FLG (inches) Heater (kW) Blower (hp) Full Load Amps Height (in) Width (in) Depth (in) Weight (lbs) Desiccant Weight (lbs)
Sizing

If you have questions on how to properly select a compressed air dryer, contact our knowledgeable customer service toll-free: 866-650-1937 or send us an email request.

Use our Drying Sizing Tool below to find the dryer you need based on your system specifications.

How to Size a HRS-L

 

To Size the Dryer Capacity for Actual Conditions

Adjusted Capacity = scfm x C1 x C2

To calculate the capacity of a given dryer based on non-standard operating conditions, multiply the standard capacity by the appropriate correction factor(s).

EXAMPLE: Dryer Model: HRS-L-600
Standard Capacity: 600 scfm
Actual Operating Conditions: 80°F ambient temperature: C1 = 1.15
90 psig system pressure: C2 = 0.91
Adjusted Capacity = 600 scfm x 1.15 x 0.91 = 628 scfm

 

To Select the Dryer Model for Actual Conditions

Adjusted Capacity = scfm/C1/C2

To choose a dryer based on a given flow at non-standard operating conditions, divide the given flow by the appropriate correction factor(s).

EXAMPLE: Given Flow: 600 scfm
Actual Operating Conditions: 80°F ambient temperature: C1 = 1.15
130 psig system pressure: C2 = 1.27
Adjusted Capacity = 600 scfm / 1.15 / 1.27 = 410 scfm

Selected Dryer Model: HRS-L-600

 

Capacity Correction Factors

The Compressed Air and Gas Institute (CAGI) has developed standards to protect users of compressed air & gas equipment ADF 200 is the current standard for desiccant compressed air dryers. ADF 200 specifies the dryers performance to be rated at -40°F pressure dew point, 100°F inlet temperature, 100°F ambient temperature, and 100 psig system pressure. To adjust the dryer capacity from these "CAGI conditions" to your specific application, please use the correction factors below for differing inlet air temperatures (C1) and system pressures (C2).

Capacity correction factors for inlet air temperature (C1)
Ambient Temperature (°F) 70 80 90 100 105 110
Correction Factor 1.2 1.15 1.1 1 0.9 0.8

 

Capacity correction factors for system air pressure (C2)
System Pressure (psig) 60 70 80 90 100 110 120 130 140 150
Correction Factor 0.65 0.73 0.82 0.91 1 1.09 1.18 1.27 1.35 1.44
Overview

Regenerative compressed air dryers use desiccant to adsorb water vapor from the compressed airstream. In the twin tower design one tower dries the air from the compressor while the desiccant in the other tower is being regenerated to provide continuous operation. These dryers are typically referred to as "heatless" or "heated". Heatless dryers do not use any source of heat for regeneration other than the heat given off during the drying phase. This is known as the "Heat of Adsorption". Heated dryers, on the other hand, utilize an external heat source for regeneration and require little or no process air.

The Aircel HRS-L Series Dryers (600 - 10,000 scfm) utilize externally heated atmospheric air for regeneration of the desiccant bed. This eliminates the use of compressed purge air for regeneration resulting in an overall reduction in the cost of operation. In the HRS-L the cool-down of the regenerated bed is assisted by a water cooled heat exchanger that further reduces compressed air usage. The result, only a small fraction of process air is consumed during depressurization of the offline tower. This amounts to an average process air use of < .05% of the rated capacity of the dryer.

Features

Standard Features:

  • Pricing includes mounted prefilter and afterfilter, ASME code stamped filter housing, differential pressure gauge, automatic drain valve and initial filter element.
  • Purge air consumption reduced down to an average of 2% or less.
  • Built-in energy management controls.
  • Low pressure drop design for energy savings.
  • Maximum desiccant volume for long life.
  • High quality components for reliable service and long life.
  • Unique HRE parallel flow to reduce or eliminate dew point and temperature spikes.
  • Small footprint saves valuable floor space.
  • Corrosion resistant finish.
  • NEMA 4 electrical enclosures.
  • Allen Bradley PLC control with panel view 300 display.
  • Common alarm / pilot light.
  • Failure to shift alarm.
  • High performance butterfly valves.
  • Stainless steel single body valves.
  • Copper control air tubing.
  • Water-cooled heat exchanger (HRS-L).

Optional Features for HRE and HRS-L:

  • NEMA 4X (corrosive protection) electrical construction.
  • NEMA 7 (explosion proof) electrical construction.
  • -100°F pressure dew point.
  • Low ambient temperature package.
  • Dew point* monitor.
  • Demand cycle control with dew point monitor.
  • Pre-piped filters and by-pass valve packages.
  • Visual moisture indicator.
  • High output temperature alarm.
  • Low ambient temperature alarm.
How it Works

How The HRS-L Series Works

The HRS-L heated blower purge dryer incorporates a water-cooled heat exchanger which eliminates the need for purge air during the cool-down period. At the end of the heat cycle, a series of valves open or close creating a closed-loop between the air blower and vessel.

  1. Wet compressed air, controlled by butterfly valves, enters the base of the on-line vessel (prefilter recommended).
  2. As the compressed air passes through the desiccant bed, moisture is removed, lowering the dew point to -40º F.
  3. Dry compressed air exits the top of the vessel, passes through a check valve and flows downstream to the use point (afterfilter recommended).
  4. When the desiccant bed becomes saturated with moisture, it goes off-line and depressurizes to ambient through an angle-seat globe valve. A muffler attenuates the noise of depressurization.
  5. After the off-line vessel has depressurized, a blower draws in ambient air for regeneration.
  6. The ambient air is heated to 400º F, giving it the energy required to initiate and accomplish desorption, after which it passes through a check valve and enters the top of the regenerating vessel.
  7. As the hot ambient air passes through the desiccant bed, water molecules are released from the surface of the desiccant and enter the airstream.
  8. At the end of the heating phase the heater is turned off and regeneration air is directed through a water cooled heat exchange.
  9. The blower circulates the cooled air back through the vessel.
  10. As the cooled air passes through the desiccant bed, it picks up heat energy which is removed from the system via the water-cooled heat exchanger. The closed-loop cycle continues until the bed temperature is lowered to its operation point without the use of purge air.

Aircel HRS-L How it Works

 

Brochure

Aircel HRS-L Zero Blower Purge Regenerative Air Dryer Series

Brochure (pdf)

Contact our customer service team by calling toll-free 866-650-1937 or email sales@ecompressedair.com for more information about the HRS-L dryer or for customized options and quotes.