[Equest-users] Query regarding PDEC ( Passive cooling ) simulation in eQuest
Jason Glazer
jglazer at gard.com
Fri Mar 16 11:21:50 PDT 2012
Please don't send EXE files to the mailing list. If you want
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Thanks,
Jason
On 3/16/2012 1:16 PM, CleanTech Analytics wrote:
> What is the attached file?
> Could you send it as .exe, because it did not translate..
>
>
> /Jeremiah D. Crossett/
> /CleanTech Analytics/
> /503-688-8951/
> /www.cleantechanalytics.com/ <http://www.cleantechanalytics.com>
>
>
> *
>
> This document may contain valuable information proprietary
> to CleanTech Analytics which is private and confidential. It
> may not be shared, copied, stored or transmitted in any form
> without the prior written consent of CleanTech Analytics
>
> *
>
>
>
> On Fri, Mar 16, 2012 at 10:19 AM, Chalfoun, Nader V -
> (chalfoun) <chalfoun at email.arizona.edu
> <mailto:chalfoun at email.arizona.edu>> wrote:
>
> Since outlook and the university usually blocks any .exe
> files I have renamed the program CT.txt and you should
> rename back to CT.exe once you receive it
> Nader
> Check my new online energy courses
> http://www.hed-online.com <http://www.hed-online.com/>
> --------------------------------------------
> *Nader V. Chalfoun*, Ph.D., LEED© AP, CEA
> Professor of Architecture and Environmental Sciences
> Director: The House Energy Doctor Program
> http://houseenergydoctor.arizona.edu
> <http://houseenergydoctor.arizona.edu/>
> Chair: Master of Science in Architecture Program
> Coordinator: Environmental Education Ph.D. Minor
> Faculty: Global Change Ph.D. Minor
> Address: University of Arizona
> College of Architecture and Landscape
> Architecture
> 1040 N. Olive St., Tucson, AZ 85721, U.S.A.
> Phone: (520)621-6751
> <tel:%28520%29621-6751> Fax: (520)621-8700
> <tel:%28520%29621-8700>
> ------------------------------------------------------------
> *From:* equest-users-bounces at lists.onebuilding.org
> <mailto:equest-users-bounces at lists.onebuilding.org>
> [equest-users-bounces at lists.onebuilding.org
> <mailto:equest-users-bounces at lists.onebuilding.org>] On
> Behalf Of Chalfoun, Nader V - (chalfoun)
> [chalfoun at email.arizona.edu
> <mailto:chalfoun at email.arizona.edu>]
> *Sent:* Friday, March 16, 2012 10:16 AM
> *To:* Joe Huang; Mansi Jayswal
> *Cc:* equest-users at lists.onebuilding.org
> <mailto:equest-users at lists.onebuilding.org>; Design
> Builder USA
>
> *Subject:* Re: [Equest-users] Query regarding PDEC (
> Passive cooling ) simulation in eQuest
>
> Dear Mansi,
> I am attaching the CoolTprogram for sizing Passive
> Downdraft Evaporative Cooling devices. As Vikramsaid,
> the program is a dos based and can be run from windows
> XP. The program calculates temperature drop, water
> consumption and other important thermodynamic values
> based on many variables including Pads evaporative
> cooling efficiency, thicknessand area, tower effective
> height (z), discharge mode (bottom or side) indoor (with
> screens or outdoor).
> The only issue is that it has 8 built-in climate zones.
> If your climate zone is not included, I have to added
> and re-compile the program. If your climate zone has
> somehow close moisture and temperature data than the
> once included, you can approximate the results.
> Good luck with that and let me know if I could be of
> additional assistance to you.
> Cheers,
> Nader
> Check my new online energy courses
> http://www.hed-online.com <http://www.hed-online.com/>
> --------------------------------------------
> *Nader V. Chalfoun*, Ph.D., LEED© AP, CEA
> Professor of Architecture and Environmental Sciences
> Director: The House Energy Doctor Program
> http://houseenergydoctor.arizona.edu
> <http://houseenergydoctor.arizona.edu/>
> Chair: Master of Science in Architecture Program
> Coordinator: Environmental Education Ph.D. Minor
> Faculty: Global Change Ph.D. Minor
> Address: University of Arizona
> College of Architecture and Landscape
> Architecture
> 1040 N. Olive St., Tucson, AZ 85721, U.S.A.
> Phone: (520)621-6751
> <tel:%28520%29621-6751> Fax: (520)621-8700
> <tel:%28520%29621-8700>
> ------------------------------------------------------------
> *From:* equest-users-bounces at lists.onebuilding.org
> <mailto:equest-users-bounces at lists.onebuilding.org>
> [equest-users-bounces at lists.onebuilding.org
> <mailto:equest-users-bounces at lists.onebuilding.org>] On
> Behalf Of Joe Huang [yjhuang at whiteboxtechnologies.com
> <mailto:yjhuang at whiteboxtechnologies.com>]
> *Sent:* Thursday, March 08, 2012 12:05 PM
> *To:* Mansi Jayswal
> *Cc:* equest-users at lists.onebuilding.org
> <mailto:equest-users at lists.onebuilding.org>; Design
> Builder USA
>
> *Subject:* Re: [Equest-users] Query regarding PDEC (
> Passive cooling ) simulation in eQuest
>
> Mansi,
>
> If CoolT is as Vikram describes, this might be the
> solution to your problem. The main issue for you is to
> know the air flow output of the PDEC in actual
> operations, not under design conditions, so that other
> program you mentioned for sizing the PDEC is of little
> help. If CoolT is not able to give you air flow rates
> based on the ambient conditions and the indoor air
> temperature, you could try building a simple two-zone
> model (PDEC, Building) using CONTAM and then run that
> stand-alone to get the air flows between the two zones.
>
> In reference to Vikram's comment, I've said all along
> that the difference between the PDEC and a standard DEC
> is the mechanism used to drive the air across the media
> - using natural bouyancy forces in the first case and a
> mechanical fan in the second case. Once you have the
> air flow rate, the PDEC is actually simpler to model
> because there's no need to model fan efficiency and heat
> gain, etc. In fact, it just takes a single
> effectiveness curve, or even just a constant
> effectiveness number.
>
> Joe
>
> Joe Huang
> White Box Technologies, Inc.
> 346 Rheem Blvd., Suite 108D
> Moraga CA 94556
> yjhuang at whiteboxtechnologies.com <mailto:yjhuang at whiteboxtechnologies.com>
> www.whiteboxtechnologies.com <http://www.whiteboxtechnologies.com>
> (o)(925)388-0265 <tel:%28925%29388-0265>
> (c)(510)928-2683 <tel:%28510%29928-2683>
> "building energy simulations at your fingertips"
>
>
> On 3/8/2012 6:49 AM, Mansi Jayswal wrote:
>>
>> Thanks Vikram,
>>
>> Could you tell me from where i can download this
>> Software " CoolT" ? i have tried to Google but did not
>> find it anyware. I have even found one of your
>> research paper. it seems you have already worked on
>> it. it will be great if you could guide me.
>>
>>
>>
>> On Thu, Mar 8, 2012 at 7:37 PM, Sami, Vikram
>> <Vikram.Sami at perkinswill.com
>> <mailto:Vikram.Sami at perkinswill.com>> wrote:
>>
>> Another option to look into is CoolT developed by
>> Nader Chalfoun at University of Arizona in Tucson.
>> It’s a Dos program that is based on empirical data
>> that they collected from the extensive testing
>> they did on Cool Towers (Passive Downdraught
>> Chimneys).
>>
>> Again – I would throw in words of caution. Passive
>> downdraught chimneys rely on buoyancy driven
>> forces – something that you cannot approximate
>> with a fan driven evaporative cooler or wind
>> driven. eQUEST might be able to model this, but
>> its beyond my knowledge. Also – The folks at UA
>> (Nader Chalfoun & Martin Yoklic) did some testing
>> with cool towers in enclosed spaces. I would try
>> writing to them to get some feedback on issues to
>> consider.
>>
>> I think Nader is on this list – not sure if he’s
>> still active.
>>
>> **
>>
>> *Vikram Sami*, LEED AP BD+C
>>
>> Sustainable Design Analyst
>>
>> 1315 Peachtree St. NE, Atlanta, GA 30309
>>
>> t: 404-443-7462 <tel:404-443-7462> f:
>> 404.892.5823 <tel: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:*Mansi Jayswal
>> [mailto:ar.mansi.jayswal at gmail.com
>> <mailto:ar.mansi.jayswal at gmail.com>]
>> *Sent:* Thursday, March 08, 2012 2:40 AM
>> *To:* Design Builder USA
>> *Cc:* Dahlstrom, Aaron; Sami, Vikram;
>> equest-users at lists.onebuilding.org
>> <mailto: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
>> <mailto: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
>> <mailto: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, LEED® AP*
>>
>> *In P**o**sse*– A subsidiary of*AKF*| 1500
>> Walnut Street, Suite 1414, Philadelphia, PA 19102
>>
>> d: 215-282-6753 <tel:215-282-6753>| m:
>> 267-507-5470 <tel:267-507-5470>| In Posse:
>> 215-282-6800 <tel:215-282-6800>| AKF:
>> 215-735-7290 <tel:215-735-7290>
>>
>> e: ADahlstrom at in-posse.com
>> <mailto: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>
>> [mailto: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
>> <mailto: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 <tel:404-443-7462> f:
>> 404.892.5823 <tel: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.
>>
>> 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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>> _______________________________________________
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>> <mailto:EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG>
>>
>>
>>
>> --
>>
>> Jeremiah D. Crossett
>>
>> Energy Modeling Consultant
>>
>> 503-688-8951 <tel:503-688-8951>
>>
>> www.DesignBuilderUSA.com
>> <http://www.DesignBuilder.com>
>>
>>
>>
>> --
>>
>>
>> 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
>>
>>
>>
>>
>> --
>>
>> 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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