HSHD Series – Heatless Modular Desiccant Air Dryers

DRYERS – COMPRESSED AIR / DESICCANT COMPRESSED AIR DRYERS

HSHD Series Modular Desiccant Air Dryers are ideal for point of use, laboratories and confined areas. They provide a continuous supply of dry compressed air by automatically cycling the flow of air through two desiccant beds.

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Descripción

TABLE 1 – INLET & PURGE FLOWS @ 100 PSIG

Model INLET FLOW RATING1
SCFM (NM3/H)		 PURGE FLOW2
SCFM (NM³/H)		 IN/OUT
CONNECTIONS
-40°F (-40°C) -94°F (-70°C) Average Maximum IN
HSHD-7 7 12 5 8 1.5 2.3 1.8 2.7 1/2″ NPT
HSHD-13 13 22 9 15 2.7 4.5 3.7 5.1 1/2″ NPT
HSHD-18 18 31 12 20 3.7 5.7 4.4 6.5 1/2″ NPT
HSHD-21 21 36 14 23.5 4.6 7.2 5.4 8.1 1/2″ NPT
HSHD-27 27 46 18 30.5 5.3 8.3 6.2 9.2 1/2″ NPT
HSHD-40 40 68 27 45.5 9.7 15 11.6 16.1 1/2″ NPT

1 Inlet flows are established in accordance with CAGI (Compressed Air and Gas Institute) standard ADF-200, Dual Stage Regenerative Desiccant Compressed Air Dryers – Methods for Testing and Rating. Conditions for rating dryers are: inlet pressure – 100 psig (7 kg/cm2); inlet temperature – saturated at 100°F (38°C).

2 Average Purge Flow is the total amount of air used to purge and repressurize off-stream towers averaged over the cycle time. Maximum Purge Flow is the flow rate through the off-stream tower during that portion of the cycle the purge/ repressurization valve is open.

TABLE 2 – INLET & PURGE FLOW CORRECTION FACTORS

INLET
PRESSURE		 psig 50 70 90 100 110 120 130 150
kg/cm2 3.5 4.9 6.3 7 7.7 8.4 9.1 10.5
MULTIPLIER A 0.31 0.54 0.83 1.00 1.09 1.17 1.26 1.44
MULTIPLIER B 0.55 0.73 0.91 1.00 1.09 1.17 1.26 1.44

CAPACITY CORRECTION FACTORS

  • To determine maximum inlet flow at inlet pressures other than 100 psig (7 kg/cm2), multiply inlet flow from Table 1 by multiplier A from Table 2 that corresponds to system pressure at inlet of dryer.
  • To determine purge flow at inlet pressures other than 100 psig (7 kg/cm2), multiply purge flow at 100 psig (7 kg/cm2), from Table 1 by multiplier B from Table 2 that corresponds to system pressure at inlet of dryer.
  • To determine outlet flow capacity, subtract purge flow from inlet flow.

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