[Bldg-sim] eQuest - Modelling Earth Air Tunnel system
JRR
energy.wwind at cox.net
Wed Feb 18 09:25:20 PST 2009
JRR wrote;
In Energy Plus you could put a purchased air node on the EAT and
then discount it via its separate
meter after the run is done....
Steve Mignogna wrote:
> Vishnuraj-
>
> This is very difficult and may not lead to the correct results, but
> one method would be to manually edit the weather file. You would need
> to change the temperatures so that the outdoor air that is pulled into
> the system would be at the temperature of the earthduct preconditioned
> air. However, I would not recommend doing this without testing to see
> how it changes the other aspects of the simulation.
>
> I have seen earthducts modeled correctly in both MATLAB and TRNSYS but
> I have not successfully modeled it within eQuest.
>
> --
> Steve Mignogna
> Atelier Ten
>
>
>
> On Wed, Feb 18, 2009 at 2:48 AM, Vishnuraj Nair <vishnu at kalpakrit.com
> <mailto:vishnu at kalpakrit.com>> wrote:
>
>
>
> Hi friends,
>
>
>
> I am trying to model an Earth Air Tunnel (EAT) system that is
> being used in a school for passive precooling.
>
> During summer first the air is pre cooled using the EAT and then
> evaporative cooling is done before being circulated into the zone.
>
> During monsoon again precooling is done using EAT and then
> chillers are being used for further cooling and dehumidification.
>
> Does anyone have any idea as to how to calculate and incorporate
> the degree of precooling that is achieved by the EAT into the
> eQuest model.
>
> Any help would be greatly appreciated. Thanks
>
> Vishnuraj Nair
>
> Kalpakrit Sustainable Environments Pvt. Ltd.
>
> New Delhi
>
> Tel: +91.124.4309490-92 Ext: 312 , Fax: +91.124.4309493
>
> E-mail : vishnu at kalpakrit.com <mailto:vishnu at kalpakrit.com>
>
>
>
>
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