[Equest-users] Blind controls in eQuest/ DOE2

Carol Gardner cmg750 at gmail.com
Thu Mar 3 19:44:49 PST 2011


Shuichi,

Well this is what I found in the documentation:


 Volume 2: Dictionary <volume2dictionary.htm> > Envelope
Components<envelopecomponents1.htm>>
WINDOW <window1.htm> > Window Blind Control <windowblindcontrol.htm>
SLAT-SCHEDULE

Takes the U-name of a schedule that adjusts the slat angle to a fraction of
SLAT-ANGLE-MAX or SLAT-ANGLE-MIN. This schedule is used only if
SLAT-ADJ-TYPE = SCHEDULE. A schedule value of *f* gives

          slat angle      = *f*  * [SLAT-ANGLE-MAX], if *f* *>* 0

          slat angle      = *f* * [SLAT-ANGLE-MIN], if *f* *<* 0

The schedule should have TYPE = FRACTION if only positive values of *f* are
used, in which case *f* should be between 0 and 1. If positive and negative
values of *f* are used than the schedule should have TYPE = EXP-FRACTION, in
which case *f* should be between -1 and 1.


I don't know if there's anything here but be sure to check that the schedule
typess are specified correctly. And sorry, I was wrong about the SHCEDULE.


Carol


On Thu, Mar 3, 2011 at 7:23 PM, Shuichi Hendrickson <
Shuichi.Hendrickson at erm.com> wrote:

>  Hi Carol and Paul,
>
>
>
>
>
> Thank you for your responses.
>
>
>
>
>
>
>
> Carol,
>
>
>
>
>
> I think I have the schedules input correctly. To clarify see my notes
> below.
>
>
>
>      **1154 *    SLAT-SCHEDULE    = "E blind slat annual"    *[This is the
> annual schedule name; week and day schedules are defined accordingly]* *
>
> *     *1155 *    SLAT-ADJ-TYPE    = SCHEDULE                *[This
> designates the control type = SCHEDULE; the options are SCHEDULE, SOLAR
> INTENSITY, and ROOM TEMP]
>
> *     *1156 *    BLIND-SCHEDULE   = "E blind deploy annual"  *[This is the
> annual schedule name; week and day schedules are defined accordingly]
>
> *     *1157 *    BLIND-ADJ-TYPE   = SCHEDULE                *[This
> designates the control type = SCHEDULE; the options are SCHEDULE, SOLAR
> INTENSITY, and ROOM TEMP]
>
>
>
> The error says
>
> *BDL error: Error in blind control: Adjustment type SCHEDULE for BLIND
> should be SCHEDULE*
>
> It seems that this is correctly defined, so Im wondering if this could be a
> bug. Any additional thoughts on this are highly appreciated.
>
>
>
> Paul,
>
>
>
> I’ve used the interior shade functions before, but my understanding is that
> this is more for curtains and more uniformly diffuse/opaque shades. Do you
> know if it is possible to model the changes in visible light using the shade
> functions? I wanted to use the blinds controls so I could get a better
> handle on the synergy between the blinds and the daylight dimming light
> controls. The shade schedule seems to be used only for describing changes in
> solar gain.
>
>  I guess Im kind of answering my own question here, but I did come across a
> definition that can be used to schedule the VLT (below). I guess to do this,
> I need to get a better handle on the relationship of VLT to slat angle.
>  Have you dealt with this before?
> *VIS-TRANS-SCH*
>
> Takes the U-name of a schedule (of TYPE=MULTIPLIER) that gives the daylight
> transmittance of the window shading device when it covers the window;
> required for daylighting calculation if SHADING-SCHEDULE is specified. (If
> WIN-SHADE-TYPE = MOVABLE-INTERIOR or MOVABLE-EXTERIOR, the program will use
> a transmittance multiplier value of 1.0 when the shade is retracted.)
> Typical visible transmittance values for translucent drapes and shades are
> given in Table 42. A transmittance schedule is used, rather than a single
> fixed value, to allow seasonal change in the transmittance of the shading
> device. This schedule is used only for windows in a space with DAYLIGHTING =
> YES. For these windows, be sure to specify not only VIS-TRANS-SCH, but also
> SHADING-SCHEDULE (and CONDUCT-SCHEDULE if the change in window conductance
> with the shade in place is significant). In the daylighting calculation,
> shading surfaces are modeled as perfect diffusers with a daylight
> transmittance that is independent of angle of incidence. *For this reason,
> slat-type devices, such as Venetian blinds, whose transmittance is a strong
> function of the angle at which light enters the device, should be modeled as
> a blind layer (see WINDOW-LAYERS keyword, above, and WINDOW-LAYER command).
> *
>
>
>
>
>
> Any additional thoughts on this are highly appreciated.
>
>
>
> Cheers,
>
> Shuichi
>
>
>
>
>
>
>
>
>
>
>
>
>  ------------------------------
>
> *From:* Paul Diglio [mailto:paul.diglio at sbcglobal.net]
> *Sent:* Friday, March 04, 2011 12:50 AM
> *To:* Carol Gardner; Shuichi Hendrickson
> *Cc:* equest-users at lists.onebuilding.org; bldg-sim at lists.onebuilding.org
>
> *Subject:* Re: [Equest-users] Blind controls in eQuest/ DOE2
>
>
>
> Shuichi:
>
> Don't you just love it when someone responds to your query and tells you to
> look it up!
>
> Anyway, Did you define the window shade type? I recently did a project and
> my BDL input looks like the below:
>
>
>  *19094* "E6 North Win (G.E1.E3.W1)" = WINDOW
>
>      *19095*    GLASS-TYPE       = "Resto & Retail Glass"
>
>      *19096*    SHADING-SCHEDULE = "Wind Shading Sch"
>
>      *19097*    FRAME-WIDTH      = 0.13
>
>      *19098*    X                = 4.43
>
>      *19099*    Y                = 0
>
>      *19100*    HEIGHT           = 8
>
>      *19101*    WIDTH            = 13
>
>      *19102*    WIN-SHADE-TYPE   = MOVABLE-INTERIOR
>
>      *19103*    FRAME-CONDUCT    = 1.8
>
>      *19104*    ..
>
>
> You have some other variables such as fin sizes.  Is the Win-Shade-Type
> defined in your BDL file?  Notice that the Shading-Schedule is right after
> the Glass-Type.
>
> Paul Diglio
>
>
>  ------------------------------
>
> *From:* Carol Gardner <cmg750 at gmail.com>
> *To:* Shuichi Hendrickson <Shuichi.Hendrickson at erm.com>
> *Cc:* "equest-users at lists.onebuilding.org" <
> equest-users at lists.onebuilding.org>; "bldg-sim at lists.onebuilding.org" <
> bldg-sim at lists.onebuilding.org>
> *Sent:* Thu, March 3, 2011 10:21:39 AM
> *Subject:* Re: [Equest-users] Blind controls in eQuest/ DOE2
>
> Hi Shuichi,
>
> I have not actively used this area of eQUEST, but I can pretty much
> guarantee that there will not be a schedule ever in eQUEST that is just
> called "SCHEDULE". The reason for that is that there are just too many
> schedules in eQUEST for any one of them to claim the glorified name of
> "SCHEDULE". That coupled with the fact that schedules are also, of
> necessity, split into DAY-SCHEDULE, WEEK-SCHEDULE, AND ANNUAL-SCHEDULE, you
> can see that when you find yourself typing simply "SCHEDULE" after your
> command an alarm should go off in your head that says something like "Oh,
> oh, I'm putting some nonsense into eQUEST that may cause the program to go
> off in some sort of GI/GO loop, I guess I'd better research the topic a bit
> more."
>
> You sound like a user of some experience so I will just encourage you to
> dig a little deeper, keeping in mind the schedule structure in eQUEST and
> the use of the Building Description Language.
>
> Cheers,
>
> Carol
>
> On Thu, Mar 3, 2011 at 2:18 AM, Shuichi Hendrickson <
> Shuichi.Hendrickson at erm.com> wrote:
>
> Hello all,
>
>
>
> I am attempting to model horizontal blind controls in eQuest / DOE2 in
> conjunction with daylight dimming controls for lighting in a high rise
> office tower using eQuest 3.64.
>
>
>
> In the past I have generally modelled windows using simplified glass type
> definitions or import from WINDOW 5, but this time around I’m using the
> window layers commands as this allows controlled horizontal blinds to be
> simulated (at least in theory).  The blind control system is controlled by a
> sun tracking system located on the roof of the building. The designer has
> supplied me with detailed scheduled hourly schedules of the blind slat angle
> per façade orientation.
>
>
>
> My understanding of the blind control capability in eQuest/ DOE2 is that
> blinds can be controlled using a SCHEDULE(s) of the type FRACTION for the
> window coverage and slat angle respectively. As such, I have developed two
> schedules, 1) for lowering and raising of the blinds [ window coverage] and
> 2) blind slat angle adjustment.
>
>
>
>
>
>
>
> My problem is I’m getting an error (typical eQuest nonsense) stating
>
>
>
>
>
> *BDL error: Error in blind control: Adjustment type SCHEDULE for BLIND
> should be SCHEDULE*
>
> * *
>
>
>
> I don’t see what the error is.  I have pasted the BDL below
>
>
>
>     *1142 * "Window 71" = WINDOW
>
>      *1143 *    GLASS-TYPE       = "GL7"
>
>      *1144 *    WIN-SPEC-METHOD  = LAYERS-INPUT
>
>      *1145 *    FRAME-WIDTH      = 0
>
>      *1146 *    X                = 31.5
>
>      *1147 *    Y                = {parameter("Window sill ht")}
>
>      *1148 *    HEIGHT           = {parameter("Window ht")}
>
>      *1149 *    WIDTH            = 5.9
>
>      *1150 *    LEFT-FIN-D       = 1.1
>
>      *1151 *    RIGHT-FIN-D      = 1.1
>
>      *1152 *    FRAME-CONDUCT    = 2.781
>
>      *1153 *    WINDOW-LAYERS    = ( "GL7layer", "Air-6.3mm",
> "Metal-1in-Lt" )
>
>      **1154 *    SLAT-SCHEDULE    = "E blind slat annual"*
>
> *     *1155 *    SLAT-ADJ-TYPE    = SCHEDULE*
>
> *     *1156 *    BLIND-SCHEDULE   = "E blind deploy annual"*
>
> *     *1157 *    BLIND-ADJ-TYPE   = SCHEDULE*
>
>      *1158 *    ..
>
>
> *ERROR****************************************************************************************
>
>
> *ERROR****************************************************************************************
>
>
>
>
>
> The DOE2 documentation is sparse on this subject and I’m basically chasing
> my tail on this. If anyone out there has successfully modelled blind
> controls and has suggestions or has an alternative way of modelling
> automatic horizontal blinds with daylight light control dimming, I would be
> very grateful.
>
>
>
>
>
>
>
> Thank in advance,
>
> * *
>
> * *
>
> *Shuichi Hendrickson*
>
> Environmental Engineer, LEED AP
>
>
> *ERM Japan*
>
> The Landmark Tower
>
> Yokohama 19F
>
> 2-2-1-1, Minatomirai, Nishi-ku
>
> Yokohama, 220-8119, Japan
>
>
> T:+81(0)45-640-3780
> F:+81(0)45-640-3781
> shuichi.hendrickson at erm.com
> www.erm.com
>
> *Ranked No1 All-Environmental Firm: ENR Magazine (2004, 2005, 2006, 2007)
> Environmental Adviser of the Year: Acquisitions Monthly (2005, 2006, 2008)
> *
>
> P Please consider the environment before printing this email
>
>
>
>
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> --
> Carol Gardner PE
>
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-- 
Carol Gardner PE
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