HSHD Series - Heatless Modular Desiccant Air Dryers

Compact and intuitive, Hankison’s HSHD Series Modular Desiccant Air Dryers feature robust communications, are CSA/UL approved, and CRN registered. As powerful as it is versatile, HSHD was designed and proven in Germany to protect moisture-sensitive applications requiring low-pressure dew points by delivering dew points of ISO 8573-1: 2010 Class 1 (-100°F, -70°C) and Class 2 (-40°C) with flow rates of 7 to 40 scfm (12m³/h to 68m³/h). The HSHD series is a perfect solution for labs, hospitals, pharmaceutical manufacturing, and other high-tech installations that demand performance and reliability. 

TABLE 1 - INLET & PURGE FLOWS @ 100 PSIG 

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

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.