Honeywell AUTOMATIC CONTROL SI Edition User Manual

GENERAL ENGINEERING DATA
ENGINEERING MANUAL OF AUTOMATIC CONTROL
477
AIRFLOW DATA
FAN RATINGS
Fans are rated at standard conditions of air: 1.2041 kg/m
3
and 20°C at sea level. Therefore, pressures corrected to standard
conditions must be used when selecting fans from fan rating tables or curves. Table 21 gives correction factors.
Pressure at operating conditions x factor = pressure at standard conditions.
Horsepower at standard conditions ÷ factor = horsepower required at operating conditions
CAUTION: Size motor for highest density (lowest factor) condition at which it is expected to operate.
Table 21. Altitude and Temperature Correction Factors.
EXAMPLE:
Air at 1000m and 60°C: 89.88 kPa x 1.28 = 115.05 kPa
Altitude (m) with Barometric Pressure (kPa)
Temp m 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500
°C kPa 101.33 95.46 89.88 84.56 79.50 74.69 70.12 65.78 61.66 57.75 54.05 50.54
-40 0.79 0.84 0.89 0.95 1.01 1.08 1.15 1.22 1.30 1.39 1.49 1.59
-30 0.83 0.88 0.93 0.99 1.05 1.12 1.19 1.27 1.36 1.45 1.55 1.66
-20 0.86 0.91 0.97 1.03 1.10 1.17 1.24 1.33 1.41 1.51 1.61 1.73
-10 0.89 0.95 1.01 1.07 1.14 1.21 1.29 1.38 1.47 1.57 1.68 1.79
0 0.93 0.99 1.05 1.11 1.18 1.26 1.34 1.43 1.53 1.63 1.74 1.86
10 0.96 1.02 1.09 1.15 1.23 1.31 1.39 1.48 1.58 1.69 1.80 1.93
20 1.00 1.06 1.12 1.19 1.27 1.35 1.44 1.54 1.64 1.75 1.87 2.00
30 1.03 1.09 1.16 1.23 1.31 1.40 1.49 1.59 1.69 1.81 1.93 2.07
40 1.06 1.13 1.20 1.28 1.36 1.44 1.54 1.64 1.75 1.87 2.00 2.13
50 1.10 1.17 1.24 1.32 1.40 1.49 1.59 1.69 1.81 1.93 2.06 2.20
60 1.13 1.20 1.28 1.36 1.44 1.54 1.64 1.74 1.86 1.99 2.12 2.27
70 1.17 1.24 1.31 1.40 1.49 1.58 1.69 1.80 1.92 2.05 2.19 2.34
80 1.20 1.27 1.35 1.44 1.53 1.63 1.73 1.85 1.97 2.11 2.25 2.41
90 1.23 1.31 1.39 1.48 1.57 1.67 1.78 1.90 2.03 2.17 2.31 2.47
100 1.27 1.35 1.43 1.52 1.62 1.72 1.83 1.95 2.08 2.23 2.38 2.54
125 1.35 1.44 1.53 1.62 1.72 1.84 1.96 2.08 2.22 2.37 2.54 2.71
150 1.44 1.53 1.62 1.72 1.83 1.95 2.08 2.22 2.36 2.52 2.70 2.88
175 1.52 1.62 1.72 1.83 1.94 2.07 2.20 2.35 2.50 2.67 2.86 3.05
200 1.61 1.71 1.81 1.93 2.05 2.18 2.32 2.48 2.64 2.82 3.01 3.22
225 1.69 1.80 1.91 2.03 2.16 2.30 2.45 2.61 2.78 2.97 3.17 3.39
250 1.78 1.89 2.00 2.13 2.27 2.41 2.57 2.74 2.92 3.12 3.33 3.56
275 1.86 1.98 2.10 2.23 2.37 2.53 2.69 2.87 3.06 3.27 3.49 3.73
300 1.95 2.07 2.20 2.33 2.48 2.64 2.81 3.00 3.20 3.42 3.65 3.91
325 2.03 2.16 2.29 2.44 2.59 2.76 2.94 3.13 3.34 3.57 3.81 4.08
350 2.12 2.25 2.39 2.54 2.70 2.87 3.06 3.26 3.48 3.72 3.97 4.25
375 2.20 2.34 2.48 2.64 2.81 2.99 3.18 3.39 3.62 3.86 4.13 4.42
400 2.29 2.43 2.58 2.74 2.92 3.10 3.31 3.52 3.76 4.01 4.29 4.59

Honeywell AUTOMATIC CONTROL SI Edition Specifications

General

Brand	Honeywell
Model	AUTOMATIC CONTROL SI Edition
Category	Control Systems
Language	English