[Equest-users] end-use energy concumption puzzler

[Karen Walkerman]

Yes... but depending on how much energy the rest of your building is using,
it could be a problem with inputs, not the simulation engine.  eQuest's
default fan powers are not the most efficient.  Double check fan pressure
drop, fan efficiency and operating conditions.  Is the fan running all the
time, or just cycling when needed?  A caution: if mechanical ventilation is
provided, setting the fan to cycle will turn off ventilation whenever the
fan is not called on by the thermostat.  I usually create a custom fan curve
that approximates fan cycling, and then set the minimum flow rate equal to
the outdoor air fraction. (in real life, OA is usually provided by a
different system).

--
Karen

On Tue, Jun 22, 2010 at 11:06 AM, Jacob Faiola <jacobfaiola at yahoo.com>wrote:

> I'm running hourly reports on a high-efficiency residential dwelling during
> summer operation and getting a strange result.
> eQUEST is telling me that vent-fans are using almost half of the energy for
> the week.
> Does this seem a little strange to anyone?
>
> thanks,
> jacob faiola
>
>
> _______________________________________________
> Equest-users mailing list
> http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to
> EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100622/a1e2b000/attachment.htm>