Call toll free: 800-544-4379

Sahara Air Products

Sahara-Pak Heat-of-Compression Air Dryer


Model HC Theory of Operation

 

 

Heat-of-Compression HC Left Tower Heating

Left Tower Heating

 

Hot air directly from the compressors enters the inlet of the HC and is directed by the inlet 2-way valves into the regenerating tower. This hot, thirsty air regenerates the bulk of the water from the desiccant. The air is then directed into the aftercooler where it is cooled, the coalescing separator where liquid water is removed through the drain trap system, then into the drying tower where the air is actually dried to its final low dew point.
Acrobat icon Get Adobe Reader Heat-of-Compression HC Left Tower Stripping

Left Tower Stripping

 

The heating cycle lasts 90 minutes. At the end of heating, the inlet valves shift position, directing the hot inlet air directly into the aftercooler, separator, and drying tower. We now begin stripping. The stripping phase of regeneration lasts 90 minutes. At the beginning of stripping, the regenerating tower is depressurized through a muffler. During stripping, a small adjustable flow of dry air is used to re-move the last little bit of moisture from the regenerating tower. The allows the HC dryer to provide exceptionally low dew points.
Heat-of-Compression HC Left Tower Cooling

Left Tower Cooling

 

At the end of stripping, the regenerating tower is repressurized. The outlet cooling cycle valves open and cooling begins. During cooling, a portion of the dry outlet air is directed into the regenerating tower to reduce the temperature of the bed prior to tower shift. There is no air lost during cooling. Cooling and stripping combine to provide extremely low dew points and to eliminate dew point fluctuations during tower shift.


Specifications

 

Model HC Top Drawing Model HC Side Drawing

Model

Length = A
(Inches)

Width = B
(Inches)

Height = C
(Inches)

Inlet/Outlet
Size
(Inches)

Lbs. Desiccant per Tower

Water Required @ 85F GPM*

SCFM RATING
@ 100#

Approx.
Weight
(Lbs.)

HC-100

82

38

78

1

66

6

100

2947

HC-210

92

46

78

1 1/2

132

13

210

3509

HC-350

99

50

87

2

220

21

350

4235

HC-700

103

58

84

3

440

29

700

5052

HC-770

128

63

84

3

484

31

770

5735

HC-1540

142

71

94

4

968

63

1540

8550

HC-2100

151

83

107

4

1320

86

2100

11070

HC-2520

165

90

110

6

1585

103

2520

12330

HC-3500

167

93

113

6

2220

107

3500

15050

HC-4500

211

108

118

6

2860

138

4500

17300

HC-5000

181

99

121

6

3180

153

5000

19600

HC-5500

195

104

123

6

3500

168

5500

20900

HC-6000

192

104

123

6

3820

183

6000

22580

HC-6500

192

104

129

6

4140

199

6500

23240

HC-7000

204

112

117

6

4455

214

7000

24290

HC-7500

204

112

123

8

4775

229

7500

25305

HC-8000

204

112

129

8

5095

244

8000

26130

HC-8500

237

120

132

8

5400

260

8500

28940

HC-9000

260

132

132

8

5720

275

9000

30520

HC-10000

289

136

155

10

6360

306

10000

34180

 

Sahara reserves the right to make changes without notification. Some models not shown. Larger sizes available. Other pressures available. Metric dimensions available upon request. Ratings are based on 100 PSIG, 100°F.

* Assumes 350F air inlet temperature; for lower regeneration temperatures, less water is necessary.

Our sales engineers will help you select the right system for your application. They have the expertise to review your plant air system and design the optimum engineered solution.

 

We can build a dryer to meet your strict performance requirements.