HRE Series

HRE Series Dual Tower Heat Regenerative Desiccant
Air Dryers

100 to 6000 SCFM

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Size Your HRE Series Air Dryer

Altec AIR’s HRE Series Heat Regenerative Desiccant Air Dryers apply a regulated amount of dried process air, which has been heated by way of a low watt density heater, down through the desiccant bed (counter current). This heated purge air is then exhausted to atmosphere, removing the water vapor that had adhered to the desiccant during the previous cycle.

  • ASME / CRN Approved Pressure Vessels
  • Factory installed Filters w/ Differential Pressure Gauges and Pre-Filter Timer Drain
  • Feature Rich ETL Listed Pro-Logic Controller w/ NEMA 4X Enclosure
  • Regulated Purge Flow for Optimum Setting, Regardless of Operating Pressure
  • ISO 8573.1 Class 2 -40°F/C Standard Outlet Dewpoint

Standard Features:
  • Power Requirements (model specific) -
    • 120 VAC, 1 Phase, 60 Hz
    • 230 VAC, 1 Phase, 60 Hz
    • 460 VAC, 3 Phase, 60 Hz
  • Maximum Pressure - 150 PSIG Standard
  • Maximum Operating Temperature - 120°F / 49°C
  • Tower Pressure Gauges & Dew Point Indicators
  • Welded Frame Base - Easy Move With Forklift
  • OSHA Approved Mufflers
  • Desiccant Fill & Drain Ports
  • ASME Safety Relief Valves
Optional Features:
  • Alternate Voltages
  • EcoTronic Dew Point Demand Control
  • Dual Filter & Bypass Packages
    • 3-Way Bypass Installed
    • 6-Way Bypass w/ Dual Select Pre-Filter
    • 9-Way Bypass w/ Dual Select Pre & After Filters
  • Environment Temperature Protection Kits
  • High Pressure (200 PSIG) Models
  • Upgraded Controller
  • Stainless Steel Control Tube & Fittings
  • Bolt-Down Construction
Call for all Available Options
General Specifications:
INLET Flow:
(SCFM @ 100 PSIG)		 Inlet / Outlet Ports
(NPT)		 Power
Requirement		 Heater
(KW)		 Approx. Purge
(SCFM @ 100 PSIG)
HRE-0100-1 100 1" 120 VAC,
1 Ph, 60 Hz		 1.5 8
HRE-0130-1 130 10
HRE-0200-2 200 1-1/2" 230 VAC,
1 Ph, 60 Hz		 3.0 15
HRE-0250-4 250 460 VAC,
3 Ph, 60 Hz		 19
HRE-0300-4 300 23
HRE-0400-4 400 2" 5.0 30
HRE-0550-4 550 6.0 41
HRE-0650-4 650 7.5 49
HRE-0800-4 800 9.0 60
HRE-1000-4 1000 3" (FLG) 12.0 75
HRE-1250-4 1250 94
HRE-1500-4 1500 4" (FLG) 18.0 113
HRE-2000-4 2000 25.0 150
HRE-2500-4 2500 185
HRE-3000-4 3000 30.0 225
HRE-4000-4* 4000 6" (FLG) 38.0 300
HRE-5000-4* 5000 50.0 375
HRE-6000-4* 6000 60.0 450

Sizing based on the Compressed Air and Gas Institute CAGI ADF 200 Standard for Compressed Air of 100 PSIG inlet pressure, 100°F inlet temperature and -40°F pressure dew point providing ISO Quality to standard 8573-1 rating 1-2-1 for Compressed Air Quality.


Dimensions:
Width
(in)		 Depth
(in)		 Height
(in)		 Weight
(lbs)
HRE-0100-1 27 30 79 550
HRE-0130-1 32 630
HRE-0200-2 31 36 90 940
HRE-0250-2 38 91 1,018
HRE-0300-4 1,095
HRE-0400-4 32 40 94 1,390
HRE-0550-4 44 49 93 1,700
HRE-0650-4 52 1,855
HRE-0800-4 98 2,270
HRE-1000-4 52 48 102 2,900
HRE-1250-4 96 70 101 4,180
HRE-1500-4 4,530
HRE-2000-4 84 121 6,210
HRE-2500-4 127 6,795
HRE-3000-4 90 92 112 7,620
HRE-4000-4* 117 127 9,565
HRE-5000-4* 133 116 105 11,055
HRE-6000-4* 145 123 104 14,125
HRE Series Dimensions

* Units 4000 SCFM and larger with factory packaged filters are provided on two bases designed to bolt together at installation.


Multiplier Table (Sizing Dryers for Variable Conditions):

Maximum Inlet Flow  =  INLET Flow (above)  x  INLET Pressure Correction Factor (A)  x  INLET Temp Correction Factor (B)
Actual Pressure (PSIG) 60 70 80 90 100 110 120 130 140 150
Correction Factor (A) 0.66 0.72 0.82 0.90 1.00 1.07 1.15 1.24 1.33 1.40
Inlet Temp (°F) 80 90 100 110 120
Correction Factor (B) 1.40 1.32 1.00 0.75 0.58

HRE Series Drying Process


HRE Drying Process Flow Diagram

Compressed air, saturated with water vapor, flows upward through the Online (Drying) Tower. The water molecules adhere to the porous surface of the Desiccant, where the residual water content of the compressed air is lowered to a Pressure Dew Point (PDP) of -40°F or lower. A regulated amount (7%) of dried process air is then heated by way of a low watt density heater and passed down through the Desiccant bed of the Offline Tower. This heated purge air, exhausted to atmosphere, removes the water vapor that adhered to the Desiccant during the previous cycle.

This tool will help you size the perfect HRE Series Desiccant Air Dryer for your Compressor Output and Environmental Conditions. Simply enter the data & conditions and you'll be presented with the Part Number for the HRE Series Air Dryer that will work optimally for those conditions. We will also provide Part Numbers for the Filter Kits that were created to match that HRE Series Air Dryer perfectly.

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All you need is the required Inlet or Outlet Flow Rate, Operating Pressure, and the required Dew Point.