[Bldg-sim] Modelling VAV system with DX cooling using DesignBuilder

Rob Hudson rdh4176 at gmail.com
Mon Feb 13 09:18:54 PST 2012

Hi Ayzer,

You must make the system a Packaged VAV system.  The difference here is
that the cooling will come from a DX coil rather than a Chilled Water coil.

Hope this helps.


On Mon, Feb 13, 2012 at 12:14 PM, Ayzer Akguc <alpayakguc at yahoo.com> wrote:

> Hi,
> I would like to model a baseline building of Ashrae 90.1 2007
> conditioning with VAV system (system 5) in DesignBuilder. This system cools
> the building using DX cooling. However, I have branch errors when I model
> dx coils in vav system. Therefore, I would like to ask how I can model VAV
> system with DX cooling. If it is impossible using DesignBuilder, I would
> like to ask how I can model cooling system to be suited to system 5 in
> ASHRAE 90.1 Appendix G ?
> Best regards.
> Alpay Akguc
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Rob Hudson
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