50
STEAM INJECTION INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
The table below lists the Area-type humidifier's minimum rise,
spread and throw non-wetting dimensions. Surfaces cooler
than ambient temperature, or objects located within this
minimum dimension, may cause condensation and dripping.
Rise: Minimum non-wetting height above the steam chute
Spread: Minimum non-wetting width from the steam chute
Throw: Minimum non-wetting horizontal distance from the
steam chute
The greater the space relative humidity, the higher and
farther the discharged steam will carry and rise in the space
until becoming absorbed.
DC-5M
Rise, spread, and throw dimensions
AREA-TYPE HUMIDIFIER
mc_041411_1855
Table 50-1:
Area-type humidifier minimum distances for rise, spread, and throw*
Maximum
steam capacity
60 °F (16 °C)
30% RH
40% RH
50% RH
Rise
Spread
Throw
Rise
Spread
Throw
Rise
Spread
Throw
lbs/hr kg/h
ft
m
ft
m
ft
m
ft
m
ft
m
ft
m
ft
m
ft
m
ft
m
50
20
1.0
0.3
2.0
0.6
6.0
1.8
1.0
0.3
2.0
0.6
6.0
1.8
1.0
0.3
2.5
0.8
6.0
1.8
75
34
3.0
0.9
3.0
0.9
8.0
2.4
3.0
0.9
3.0
0.9
8.0
2.4
3.0
0.9
4.0
1.2
8.0
2.4
100
45
4.0
1.2
4.0
1.2
10.0
3.1
4.0
1.2
4.0
1.2
10.0
3.1
4.0
1.2
5.0
1.5
10.0
3.1
150
68
6.0
1.8
5.0
1.5
12.0
3.7
6.0
1.8
5.0
1.5
12.0
3.7
6.0
1.8
5.0
1.5
12.0
3.7
200
90
7.0
2.1
7.0
2.1
13.0
4.0
8.0
2.4
7.0
2.1
14.0
4.3
8.0
2.4
7.0
2.1
14.0
4.3
225
102
7.0
2.1
7.0
2.1
13.0
4.0
8.0
2.4
7.0
2.1
14.0
4.3
8.0
2.4
7.0
2.1
14.0
4.3
250
110
8.0
2.4
8.0
2.4
15.0
4.6
9.0
2.7
9.0
2.7
16.0
4.9
9.0
2.7
9.0
2.7
16.0
4.9
285
130
9.0
2.7
9.0
2.7
17.0
5.2
10.0
3.1
10.0
3.1
18.0
5.5
10.0
3.1
10.0
3.1
18.0
5.5
Maximum
steam capacity
70 °F (21 °C)
30% RH
40% RH
50% RH
Rise
Spread
Throw
Rise
Spread
Throw
Rise
Spread
Throw
lbs/hr kg/h
ft
m
ft
m
ft
m
ft
m
ft
m
ft
m
ft
m
ft
m
ft
m
50
20
1.0
0.3
1.5
0.5
4.0
1.2
1.0
0.3
2.0
0.6
4.0
1.2
1.0
0.3
2.0
0.6
4.0
1.2
75
34
2.0
0.6
2.0
0.6
6.0
1.8
2.0
0.6
2.5
0.8
6.0
1.8
2.0
0.6
2.5
0.8
6.0
1.8
100
45
3.0
0.9
3.0
0.9
8.0
2.4
3.0
0.9
3.0
0.9
8.0
2.4
3.0
0.9
3.0
0.9
8.0
2.4
150
68
4.0
1.2
4.0
1.2
10.0
3.1
4.0
1.2
4.0
1.2
11.0
3.4
4.0
1.2
4.0
1.2
11.0
3.4
200
90
5.0
1.5
5.0
1.5
11.0
3.4
5.0
1.5
5.0
1.5
12.0
3.7
5.0
1.5
5.0
1.5
12.0
3.7
225
102
5.0
1.5
5.0
1.5
11.0
3.4
5.0
1.5
5.0
1.5
12.0
3.7
5.0
1.5
5.0
1.5
12.0
3.7
250
110
6.0
1.8
6.0
1.8
12.0
3.7
6.0
1.8
6.0
1.8
13.0
4.0
6.0
1.8
6.0
1.8
14.0
4.3
285
130
7.0
2.1
7.0
2.1
14.0
4.3
7.0
2.1
7.0
2.1
15.0
4.6
7.0
2.1
7.0
2.1
16.0
4.9
* With fan on high speed
Rise
Throw
Spread
mc_050511_0945
mc_030210_0940
FIGURE 50-1: AREA-TYPE RISE, SPREAD,
AND THROW
