Fläkt Woods
3099 US 03.02
7
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 1
Non-hygroscopic rotors - type A, C and E
In type A, C and E NON-HYGROSCOPIC rotors, only
sensible heat exchange takes place as long as there is no
condensation in the rotor. As soon as condensation
occurs, the condensate will evaporate in the supply air.
The graphic presentation of the process in the psychro-
metric chart when condensation takes place varies with
the operating conditions and can therefore not be speci-
fied generally.
O
utdoor air summer
E
xhaust air summer
E
xhaust air winter
O
utdoor air winter