Required heat output of recirculation units
■
Determine the required heat output of the recirculation units based on the output of the
supply air unit.
Q
H_Recirculation
= Q
H_req
– Q
H_Supply air
For the supply air unit, take into account only the share of capacity that is used for
coverage of fabric heat losses (separately shown in HK-Select).
Type
Q
H_Supply air
Q
H_Recirculation
MG-9/60
52.7
322 – 52.7 = 269.3
(values in kW)
Minimum number of recirculation units
■
Determine the minimum number of recirculation units depending on the available supply air units. Take into account the following criteria:
–
Floor area covered
–
Heat output
–
Unit clearances
Supply air unit Recirculation units
Required number of recirculation units
Minimum number
of recirculation
units
Type
Type
Floor area covered
Heat output
Unit clearances
1 unit
MG-9/60
DGV-6/30
6
10
9
10
DGV-6/60
5
5
6
6
DGV-9/60
4
5
6
6
■
Choose the final solution from the remaining possibilities, depending on the geometry of the hall and the costs.
56
TopVent
®
MG
Design example
