Product Manual

SRHT 20-350 AC User Manual US-EN
02250246-084 R01
Subject to EAR. ECCN EAR99 and related export control restrictions.
17
8.3 Correction factors
Correction factor for operating pressure modifications:
Inlet air pressure psig
60
80
100
120
140
160
180
200
220
230
barg
4
5.5
7
8
10
11
12.5
14
15
16
Factor (F1)
0.79
0.91
1.00
1.07
1.13
1.18
1.23
1.27
1.31
1.33
Correction factor for ambient temperature modifications:
Ambient temperature ºF
80
90
100
105
110
115
120
ºC
27
32
38
40
43
46
50
Factor (F2)
1.22
1.11
1.00
0.94
0.89
0.83
0.78
Correction factor for inlet air temperature modifications:
Air temperature
ºF
140
160
170
180
195
210
ºC
60
70
76
82
90
100
Factor (F3)
1.26
1.13
1.07
1.00
0.90
0.81
Correction factor for DewPoint modifications:
DewPoint ºF
37
41
45
50
ºC
3
5
7
10
Factor (F4)
0.78
0.90
1.00
1.12
Calculation of the actual air throughput:
Actual air throughput = air throughput acc. to planning x factor (F1) x factor (F2) x factor (F3) x factor (F4)
Example:
An SRHT 150 AC Z has a nominal duty of 150 scfm (255 m
3
/h). The highest achievable air mass under the following
operating conditions is:
 Air inlet pressure = 120 psig (8 barg)
 Ambient temperature = 105°F (40°C)
 Air inlet temperature = 195°F (90°C)
 Pressure dew point = 45°F (7°C)
  Factor (F1) = 1.07
  Factor (F2) = 0.94
  Factor (F3) = 0.90
  Factor (F4) = 1.00