Fläkt Woods
3099 US 03.02
11
Specifications are subject to alteration without notice
PUMA (A–F) Rotary heat exchanger
TECHNICAL HANDBOOK
The process in the psychrometric chart
35
70
105
140
175
-20
-10
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
Dr
y Bulb T
emperature
°
F
Humidity Ratio
grains/lb
100
110
120
0
5
10
15
20
25
30
35
40
45
50
20%
40%
60%
12.0
12.5
14.5
14.0
13.5
13.0
80%
Chart 4
Frosting in a non-hygroscopic rotor