Description
HSHD Series – Heatless Modular Desiccant 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.
PRODUCT FEATURES
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 (-100F, -70C) and Class 2 (-40C) with flow rates of 7 to 40 scfm (12 to 68 nm3/h). HSHD—a perfect solution for labs, hospitals, pharmaceutical manufacturing, and other high-tech installations that demand performance and reliability.
THEORY OF OPERATION
Compressed air enters the dryer and is directed to Tower 1 by valve (A), and then to the dryer outlet through shuttle valve (B). A portion of the dried air is throttled to near atmospheric pressure by means of orifice (C). This extremely dry, low-pressure air flows through and regenerates the desiccant in Tower 2 and is exhausted through purge/repressurization valve (D) and exhaust muffler (E) to atmosphere. After a set time, the automatic solid state timer closes purge/repressurization valve (D) allowing Tower 2 to repressurize slowly. At the end of 2 minutes, valve (A) shifts and purge/ repressurization valve (D) reopens. The main air flow is now dried by Tower 2 while Tower 1 is being regenerated.
SPECIFICATIONS
| Model | INLET FLOW RATING | PURGE FLOW | IN/OUT | ||||||
| SCFM (NM3/H) | SCFM (NM³/H) | 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 |
*TABLE 1 – INLET & PURGE FLOWS @ 100 PSIG
