Van
Air Systems' High Performance, Type HPD, is an absorbent
deliquescent desiccant engineered for high quality compressed
air in single and sequential tower air dryers. HPD is a
hard tablet formed from hygroscopic materials that attract
and hold moisture. The materials in the compound are non-toxic
and are completely soluble in water.
HPD is recommended for sequential tower systems where the
operating temperature is at or below 80°F. HPD is a
cost-effective solution for applications requiring extremely
dry air. As HPD absorbs moisture, it slowly dissolves. During
this process, the tablets maintain their shape to prevent
caking, channeling or plugging. Once in a mist form, the
liquid continues to absorb additional moisture.
As
the desiccant tablet draws water vapor out of the compressed
air, the surface of the tablet slowly dissolves and forms
a solution which eventually drops from its surface. The
deliquescent desiccant tablet continues to remove moisture
and forms this solution until the tablet is entirely consumed.
When used in a properly sized single or sequential tower
desiccant compressed air dryer, HPD will remove sufficient
moisture vapor to establish a 23% RH in the air line.
For
applications where the temperature conditions exceed 80°
F, a pre-bed of ceramic bead support is recommended to maximize
the efficiency of the absorbent desiccant.
HPD
High Performance Desiccant Physical Properties |
| Color
and form |
White
tablet |
| Size |
1"
diameter x 3/4" height |
| Bulk
Density |
55
+/- 3 lbs/cu.ft. |
| Average
Break Pressure |
60
- 100 lbs |
| Average
PH of Solution |
6.5
to 7.5 |
| Critical
RH |
23% |
HPD
High Performance Desiccant Dew Point Performance |
Inlet
Temperature (saturated) |
Outlet
Dew Point |
Dew
Point Depression |
80°
F |
40°
F |
40°
F |
70°
F |
33°
F |
37°
F |
60°
F |
26°
F |
34°
F |
55°
F |
22°
F |
33°
F |
45°
F |
15°
F |
30°
F |
HPD
High Performance Desiccant Package Sizes |
| 33-0359 |
45
lb pail |
| 33-0360 |
50
lb bag |
