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

[Shaun Martin]

Hi Mansi,
 
CONTAM might help you.  http://www.bfrl.nist.gov/IAQanalysis/   It should be
faster to set up a model than CFD.  
 
As Aaron pionted out, eQuest can handle natural ventilation in a single
zone, but that's about it.
 
Shaun
 
Shaun Martin LEED AP
Principal
Shaun Martin Consulting
2060 Pine Street, Vancouver BC V6J 4P8
604-789-1095
smartin at shaunmartinconsulting.com
member CAGBC, ASHRAE

 

  _____  

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Mansi
Jayswal
Sent: Wednesday, March 07, 2012 11:40 PM
To: Design Builder USA
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Query regarding PDEC ( Passive cooling )
simulation in eQuest



Thank you all for your quick response and Information. 

Is it possible that if i use PHDC software to design the PDEC system and
simulate the same building in eQuest ??  PHDC software can give me the
required size of the passive down draught evaporating cooling towers for the
building.


On Wed, Mar 7, 2012 at 9:37 PM, Design Builder USA
<jcrossett at designbuilderusa.com> wrote:


You may wish to explore the free trial of Design Builder, as it has CFD,
natural ventilation and evaporate cooling.  
Tho I am not sure if it can be used for your passive cooling requirement or
not..


Best of luck


On Wed, Mar 7, 2012 at 6:53 AM, Dahlstrom, Aaron <ADahlstrom at in-posse.com>
wrote:


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, LEEDR 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

 

Mansi,

 

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
<http://www.perkinswill.com/> 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] On Behalf Of Mansi
Jayswal
Sent: Tuesday, March 06, 2012 11:25 PM
To: 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.

 

Thanks 

 

-- 


Regards,

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

 


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Jeremiah D. Crossett
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503-688-8951
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-- 


Regards,
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

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