How do I add an Extract Ventilation Rate to a room?

RE: How do I add an Extract Ventilation Rate to a room?

Duncan Brown — Fri, 29 Sep 2017 10:33:34 GMT

To further clarify this; If the extract air is to be replaced through outside air, for example an open window, then the A/C rate is suitable. If air is replaced from an adjacent room then you should use the fixed temperature air option in the calculation in the calculation. With this method, however, you should run a seperate calculation for your toilets as you wouldn't likely want to specify a fixed temperature at the same rate for other rooms.

RE: How do I add an Extract Ventilation Rate to a room?

Duncan Brown — Fri, 29 Sep 2017 10:02:09 GMT

As its part of the heat loss calculation, no - we don't have a seperate calculation for this. You could try setting your air change, running a calculation, then resetting it and comparing results, however.

RE: How do I add an Extract Ventilation Rate to a room?

JOHN MCCULLOUGH — Fri, 29 Sep 2017 09:42:37 GMT

Is there a calculation as to how this effects the heat losses, so I can enter the applicable figure?

RE: How do I add an Extract Ventilation Rate to a room?

Duncan Brown — Fri, 29 Sep 2017 09:14:57 GMT

Hi John - you should consider the air change fields in room data:

Regards,

RE: How do I add an Extract Ventilation Rate to a room?

JOHN MCCULLOUGH — Fri, 29 Sep 2017 09:11:09 GMT

what would you suggest for a toilet. The extract would be 6 air changes an hour but I can't add that to the heat looses as they would be huge!

RE: How do I add an Extract Ventilation Rate to a room?

Duncan Brown — Fri, 07 Apr 2017 13:42:56 GMT

Pete - if its for a 24 hour extract ventilation, you could consider the a/c rate in room data.

regards,

RE: How do I add an Extract Ventilation Rate to a room?

Pete Cook — Fri, 07 Apr 2017 13:25:20 GMT

Thanks Duncan. Must have been when I was using Cymap where I was able to do this.

RE: How do I add an Extract Ventilation Rate to a room?

Duncan Brown — Fri, 07 Apr 2017 13:16:35 GMT

Hi Pete - I'm afraid that is outside the scope of the Design Database program. If you have Design Simulation you would be able to set up extract ventilation in the Plant module and consider that in the calculation.

regards,