Fläkt Woods
3099 US 03.02
8
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 2
Hygroscopic rotors - type B, D and F
In type B, D and F HYGROSCOPIC ROTORS, the
moisture and temperature efficiencies at full speed are
equal. As a result, the process in the psychrometric chart
runs along the interconnecting line between the inlet
conditions for the supply and exhaust air
O
utdoor air summer
E
xhaust air summer
E
xhaust air winter
O
utdoor air winter