Interzonal Ventilation
Posted: Wed Nov 05, 2014 10:06 pm -1100
A question arise on how to input mechanical and inter zonal ventilation rates.
We need detailed information on how to specify the inter zone ventilation rates properly in Wufi Plus 2.5.x.
In the ventilation input panel, it is not available to specify explicit windward or leeward information on mechanical ventilation and interzonal ventilation rate. In order to assume the consistent ventilation rates occurring supply air volume and exhaust air volume in valance, please let us know how to input ventilation rates.
For the concrete discussion, let us assume two simple cases consisting of three zones as follows;
Note that Figs and Tabs are properly described in the attached Excel file.
[Case1]: Assume three serial connected zones such as;
Fig.1
+------+------+------+
| | | |
| Zone1 | Zone2 | Zone3 |
| | | |
+------+------+------+
and assume Mechanical Ventilation and Inter Zonal Ventilation as follows;
Tab.1
Windward Leeward Zones (Unit: cbm/h) Exhaust
Zone OA Zone 1 Zone 2 Zone 3 Rate
OA - 100 0 0 100
Zone 1 0 - 100 0 100
Zone 2 0 0 - 100 100
Zone 3 100 0 0 - 100
Supply Rate 100 100 100 100
Natural ventilation: assumes each zone has 0.01 ACH with OA,
We understand this value is specified by the natural ventilation occurred by infiltration and exfiltration.
[Case2]: three inter connected zones such as;
Fig.2
+------+------+
| |
| Zone1 |
| |
+------+------+
| | |
| Zone2 | Zone3 |
| | |
+------+------+
and assume Mechanical Ventilation and Inter Zonal Ventilation as follows;
Tab.2
Windward Leeward Zones (Unit: cbm/h) Exhaust
Zone OA Zone 1 Zone 2 Zone 3 Rate
OA - 200 50 0 250
Zone 1 100 - 50 50 200
Zone 2 50 0 - 50 100
Zone 3 100 0 0 - 100
Supply Rate 250 200 100 100
Natural ventilation: assumes each zone has 0.01 ACH with OA,
We need detailed information on how to specify the inter zone ventilation rates properly in Wufi Plus 2.5.x.
In the ventilation input panel, it is not available to specify explicit windward or leeward information on mechanical ventilation and interzonal ventilation rate. In order to assume the consistent ventilation rates occurring supply air volume and exhaust air volume in valance, please let us know how to input ventilation rates.
For the concrete discussion, let us assume two simple cases consisting of three zones as follows;
Note that Figs and Tabs are properly described in the attached Excel file.
[Case1]: Assume three serial connected zones such as;
Fig.1
+------+------+------+
| | | |
| Zone1 | Zone2 | Zone3 |
| | | |
+------+------+------+
and assume Mechanical Ventilation and Inter Zonal Ventilation as follows;
Tab.1
Windward Leeward Zones (Unit: cbm/h) Exhaust
Zone OA Zone 1 Zone 2 Zone 3 Rate
OA - 100 0 0 100
Zone 1 0 - 100 0 100
Zone 2 0 0 - 100 100
Zone 3 100 0 0 - 100
Supply Rate 100 100 100 100
Natural ventilation: assumes each zone has 0.01 ACH with OA,
We understand this value is specified by the natural ventilation occurred by infiltration and exfiltration.
[Case2]: three inter connected zones such as;
Fig.2
+------+------+
| |
| Zone1 |
| |
+------+------+
| | |
| Zone2 | Zone3 |
| | |
+------+------+
and assume Mechanical Ventilation and Inter Zonal Ventilation as follows;
Tab.2
Windward Leeward Zones (Unit: cbm/h) Exhaust
Zone OA Zone 1 Zone 2 Zone 3 Rate
OA - 200 50 0 250
Zone 1 100 - 50 50 200
Zone 2 50 0 - 50 100
Zone 3 100 0 0 - 100
Supply Rate 250 200 100 100
Natural ventilation: assumes each zone has 0.01 ACH with OA,