[Bldg-sim] eQuest - Modelling Earth Air Tunnel system

[Steve Mignogna]

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>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
>
>
>
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