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 fa?ade 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, LEED AP