[Equest-users] [Bldg-sim] Equest: Solarwall, Trombe Wall modeling

Kevin Kyte kkyte at robsonwoese.com
Wed May 28 06:32:17 PDT 2008

OK, allow me to answer my own question.  SolarWall has been used for LEED
before and ventilation units should not be sized down at all when used
together.  Auto-size should not be necessary, just subtracting energy model
to energy model.


Kevin Kyte, LEED AP

RobsonWoese, Inc.

(T) 716-636-1800

(F) 716-636-1856

 <http://robsonwoese.com/index.php> http://robsonwoese.com


From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Kevin Kyte
Sent: Wednesday, May 28, 2008 8:29 AM
To: 'Karen Walkerman'; 'Eric Wilson'
Cc: equest-users at lists.onebuilding.org; bldg-sim at lists.onebuilding.org
Subject: Re: [Equest-users] [Bldg-sim] Equest: Solarwall, Trombe Wall


Yes, I have used RETScreen and understand a solar wall can be modeled within
it.  In fact, Conserval has already done this for us.  In considering
SolarWallR, all the air handlers have been sized down and when I enter in
the system inputs for capacity there isn't enough juice so I have to
incorporate solar air heating into this model.  Either that or autosize
everything to get 300 and subtract the retscreen model as an ECM.


So create a plenum for each air handler and then make all the plenum walls
Trombe-wall and just fiddle with it until it works, maybe.  I can spend a
minute on it and try.  Either way its modeling reality, right?  There should
be a lot more discussion on this.  Someone must have submitted an energy
model with solar air heating to USGBC using equest.





From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Karen Walkerman
Sent: Tuesday, May 27, 2008 4:07 PM
To: Eric Wilson
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Equest: Solarwall, Trombe Wall modeling


You could also experiment with creating a space of type "plenum" with the
dimensions and properties of a solar wall.  If I were taking the
experimentation route, this is where I would start.


On Tue, May 27, 2008 at 4:04 PM, Eric Wilson <ejwilsn1 at uiuc.edu> wrote:


I've modeled a SolarWall, aka "Solar Air Heating" or transpired air
collectors using RETScreen <http://www.retscreen.net/> .  They have a Solar
Air Heating module that is included in the RETScreen 4 download.  If you
don't mind modeling the SolarWall separate from the rest of the building,
then that should work pretty well.

Eric Wilson
Smart Energy Design Assistance Center
University of Illinois - Urbana-Champaign
(217) 244-4671
(800) 214-7954

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