AHLD Series 2017-11-01T16:38:20+00:00

AHLD Series

Heatless Desiccant Air Dryer

70 – 8,000 scfm

Designed for maximum energy savings, the Aircel AHLD E-Series dryers are reliable, fully automatic, heatless desiccant dryers with integrated Energy Management System for purge reduction. Each model combines innovative engineering and technically advanced, highly durable components to produce the most reliable heatless dryers available on the market.

  • -40°F dew point performance
  • Ambient Air Temperature: 38°F – 120°F
  • Inlet Air Temperature: 40°F – 120°F
  • Operating Pressure: 60 to 180 psig (models 70 – 750); 60 – 135 psig (models 1,000 – 8,000)

For larger capacities, higher pressures, and custom dryer options, please contact an Aircel factory representative.

Model NumberCapacityVoltageConnection SizeWeight (lbs.)HeightWidthDepth
AHLD‑70E70115‑1‑603/4″ NPT410722622
AHLD‑100E100115‑1‑601″ NPT490753024
AHLD‑150E150115‑1‑601″ NPT560753024
AHLD‑200E200115‑1‑601.5″ NPT800853424
AHLD‑250E250115‑1‑601.5″ NPT870853424
AHLD‑300E300115‑1‑601.5″ NPT990864630
AHLD‑350E350115‑1‑602″ NPT1,020874630
AHLD‑450E450115‑1‑602″ NPT1,140874630
AHLD‑500E500115‑1‑602″ NPT1,250895030
AHLD‑600E600115‑1‑602″ NPT1,450895030
AHLD‑750E750115‑1‑602″ NPT1,850905030
AHLD‑1,000E1,000115‑1‑603″ FLG2,800946640
AHLD‑1,250E1,250115‑1‑603″ FLG4,000987040
AHLD‑1,500E1,500115‑1‑603″ FLG4,600997040
AHLD‑2,000E2,000115‑1‑604″ FLG5,8001098250
AHLD‑2,500E2,500115‑1‑604″ FLG7,80012010965
AHLD‑3,000E3,000115‑1‑604″ FLG9,20012011865
AHLD‑3,500E3,500115‑1‑606″ FLG9,90012012070
AHLD‑4,000E4,000115‑1‑606″ FLG10,90012012870
AHLD‑4,500E4,500115‑1‑606″ FLG12,10012012870
AHLD‑5,000E5,000115‑1‑606″ FLG13,20013113880
AHLD‑6,000E6,000115‑1‑606″ FLG15,80013113880
AHLD‑7,000E7,000115‑1‑608″ FLG17,70015614897
AHLD‑8,000E8,000115‑1‑608″ FLG19,30016415097
  1. Compressed air flows through the pre-filter to remove oil and then enters the on-line Tower 1 through valve (A).

  2. Air moves upward, where the desiccant removes moisture from the air stream. The majority of clean, dry compressed air exits valve (B) and cycles through the after filter to then flows downstream.
    During the drying process, a small amount of the clean air exiting valve (B) travels to Tower 2 (shown in regeneration mode) to assist in the regeneration process.

  3. To regenerate Tower 2, valve (C) opens and the tower is depressurized to near atmospheric pressure. The air flowing from valve (B) moves down the tower, removing moisture from the desiccant bed. Once it travels to the bottom of Tower 2, it exits the tower through valve (C) and the exhaust muffler to ambient.

  4. Once Tower 2 is fully regenerated, valve (C) will close, repressurizing Tower 2 to line pressure with the slight airflow coming through valve (B).

  5. Next, valve (D) will open to depressurize Tower 1 and valve (A) will switch (not pictured), directing wet incoming air to Tower 2 for drying while Tower 1 is regenerating the desiccant bed.
    This process will repeats continuously every 5 minutes unless the Energy Management System is extending drying time period during low load conditions to a maximum of 30 minutes each cycle. The Energy Management System continually monitors the mid-bed humidity level in the drying tower to save energy by extending the drying cycle (up to 30 minutes).