[Equest-users] Query regarding PDEC ( Passive cooling ) simulation in eQuest

Dahlstrom, Aaron ADahlstrom at in-posse.com
Wed Mar 7 06:53:01 PST 2012

Mansi -

We have done some schematic modeling of wind towers with Fluent, a CFD package as noted.
Our climate didn't justify evaporative pre-cooling.

eQUEST has a natural ventilation module, which I have not fully dived into.

I believe it requires inputs that would likely be validated by a CFD model - for example, I don't think eQUEST's natural ventilation model allows for evaporative pre-cooling as a temperature driver for natural air exchange in a space.
As eQUEST models each zone as a fully mixed space, and has limited air transfer between zones, you may also have trouble getting the thermal stratification from eQUEST that would typically be needed to drive natural ventilation in a PDEC.

Aaron Dahlstrom , PE, LEED(r) AP
In Posse - A subsidiary of AKF| 1500 Walnut Street, Suite 1414, Philadelphia, PA 19102
d: 215-282-6753| m: 267-507-5470| In Posse: 215-282-6800| AKF: 215-735-7290
e: ADahlstrom at in-posse.com | in posse web: www.in-posse.com<http://www.in-posse.com/> | akf web: www.akfgroup.com<http://www.akfgroup.com/>

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Sami, Vikram
Sent: Wednesday, March 07, 2012 8:53 AM
To: Mansi Jayswal; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Query regarding PDEC ( Passive cooling ) simulation in eQuest


I doubt you can do this credibly in eQUEST. You really need a CFD type package to be able to simulate this. . A word of caution - the effort to develop the simulation for this is a master's thesis in itself.

Vikram Sami, LEED AP BD+C
Sustainable Design Analyst
1315 Peachtree St. NE, Atlanta, GA 30309
t: 404-443-7462    f: 404.892.5823       e: vikram.sami at perkinswill.com<mailto:vikram.sami at perkinswill.com>   www.perkinswill.com<http://www.perkinswill.com/>
Perkins+Will.  Ideas + buildings that honor the broader goals of society

From: equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org> [mailto:equest-users-bounces at lists.onebuilding.org]<mailto:[mailto:equest-users-bounces at lists.onebuilding.org]> On Behalf Of Mansi Jayswal
Sent: Tuesday, March 06, 2012 11:25 PM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: [Equest-users] Query regarding PDEC ( Passive cooling ) simulation in eQuest

Hello friends,

My name is Mansi Jayswal. I am a final year student of Masters Programme at CEPT University, India. By profession I am an architect. Currently I am doing thesis on passive cooling technique (Passive down draught evaporative cooling system- PDEC ). And try to identified that how much cooling load of HVAC system can be replaced through this system.

Now my query is that is it eQuest is capable to simulate such building with wind tower or PHDC (PDEC ) system? If anybody knows please kindly reply. I have very days left for final submission and I am stuck here.



Mansi Jayswal,
B.Arch I IGBC AP I M.Tech in Climate Change & Sustainable Development
Faculty of Sustainable Environment & Climate Change,
Centre for Environmental Planning & Technology (CEPT) University

This e-mail may contain information that is confidential, privileged or otherwise protected from disclosure. If you are not an intended recipient of this e-mail, do not duplicate or redistribute it by any means. Please delete it and any attachments and notify the sender that you have received it in error. Unintended recipients are prohibited from taking action on the basis of information in this e-mail. E-mail messages may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be intercepted, deleted or interfered without the knowledge of the sender or the intended recipient. If you are not comfortable with the risks associated with e-mail messages, you may decide not to use e-mail to communicate with In Posse.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120307/0c12ac74/attachment-0002.htm>

More information about the Equest-users mailing list