Hi,
In Building Template Manager, I want to know the difference between "Air infiltration" (in the Air Exchanges tab) and "System outside air supply" (in the System tab). In what case do we use the second ? Can anyone help me ?
Thanks
Air infiltration/Ouside air supply
Re: Air infiltration/Ouside air supply
Pretty sure it's in the user docs but I think this might help you
Auxiliary Ventilation air exchanges are intended to be used to specify minimum levels of either mechanical or natural ventilation for fresh air purposes. This type of ventilation can alternatively be specified using the System outside air supply settings on the System tab.
The main difference between the two is that when specifying Auxiliary Ventilation under the Air Exchanges tab there are 3 options relating to the condition of the air entering the room i.e.
1) External Air,
2) External Air + Offset Temperature (external air with a temperature offset applied),
3) Temperature From Profile (air at a temperature specified by an absolute profile).
In the case of External Air + Offset Temperature and Temperature From Profile, the humidity ratio of the supply air is assumed to equal that of the room being supplied.
Therefore external air supply can be specified by either method but to specify tempered air it would be necessary to use the Air exchanges tab.
I Hope that's assisted in some manner because I'm pretty close to ending Zap's surgery for the evening.
Zap.
Auxiliary Ventilation air exchanges are intended to be used to specify minimum levels of either mechanical or natural ventilation for fresh air purposes. This type of ventilation can alternatively be specified using the System outside air supply settings on the System tab.
The main difference between the two is that when specifying Auxiliary Ventilation under the Air Exchanges tab there are 3 options relating to the condition of the air entering the room i.e.
1) External Air,
2) External Air + Offset Temperature (external air with a temperature offset applied),
3) Temperature From Profile (air at a temperature specified by an absolute profile).
In the case of External Air + Offset Temperature and Temperature From Profile, the humidity ratio of the supply air is assumed to equal that of the room being supplied.
Therefore external air supply can be specified by either method but to specify tempered air it would be necessary to use the Air exchanges tab.
I Hope that's assisted in some manner because I'm pretty close to ending Zap's surgery for the evening.
Zap.