3.0
add_electrochromic_window
11cac3d1-3688-4bb8-bf2c-f4db89339799
3a2ba394-c8fd-4665-9cda-2580fd36cbec
20230718T215420Z
3AB77CF4
AddElectrochromicWindow
Add Electrochromic Window
This measure replaces existing window construction to electrochromic window, and allows a few control strategies such as by glare, solar radiation, schedule, and illuminance. This measure models two states of the electrochromic window, the light and dark states.
This measure implements the electrochromic window as a three-layer construction, which includes a typical 3mm glass layer, an air gap, and an electrochromic layer. The control strategies are implemented via WindowShadingControl object. For the electrochromic window layer performance, the user could either use default values, which we got from View manufacturer data, or enter their own product performance.
thickness_electro_glass
Thickness of the electrochromic glass layer in mm
Double
m
true
false
0.0058
thickness_air_gap
Thickness of the air gap between electrochromic glass layer and inside clear glass layer in meter
Double
m
true
false
0.0125
thickness_clear_glass
Thickness of the inside clear glass layer in meter
Double
m
true
false
0.003
tc_electro_glass
Thermal conductivity of the electrochromic glass layer in W/m.K
Double
W/m.K
true
false
0.9
solar_trans_light
Electrochromic glass solar transmittance - light state
Double
true
false
0.444
solar_ref_f_light
Electrochromic glass solar reflectance - front side - light state
Double
true
false
0.134
solar_ref_b_light
Electrochromic glass solar reflectance - back side - light state
Double
true
false
0.196
vis_trans_light
Electrochromic glass visible transmittance - light state
Double
true
false
0.696
vis_ref_f_light
Electrochromic glass visible reflectance - front side - light state
Double
true
false
0.119
vis_ref_b_light
Electrochromic glass visible reflectance - back side - light state
Double
true
false
0.133
ir_trans_light
Electrochromic glass infrared transmittance - light state
Double
true
false
0
ir_emis_f_light
Electrochromic glass infrared emissivity - front side - light state
Double
true
false
0.84
ir_emis_b_light
Electrochromic glass infrared emissivity - back side - light state
Double
true
false
0.159
solar_trans_dark
Electrochromic glass solar transmittance - dark state
Double
true
false
0.006
solar_ref_f_dark
Electrochromic glass solar reflectance - front side - dark state
Double
true
false
0.121
solar_ref_b_dark
Electrochromic glass solar reflectance - back side - dark state
Double
true
false
0.194
vis_trans_dark
Electrochromic glass visible transmittance - dark state
Double
true
false
0.012
vis_ref_f_dark
Electrochromic glass visible reflectance - front side - dark state
Double
true
false
0.098
vis_ref_b_dark
Electrochromic glass visible reflectance - back side - dark state
Double
true
false
0.114
ir_trans_dark
Electrochromic glass infrared transmittance - dark state
Double
true
false
0
ir_emis_f_dark
Electrochromic glass infrared emissivity - front side - dark state
Double
true
false
0.84
ir_emis_b_dark
Electrochromic glass infrared emissivity - back side - dark state
Double
true
false
0.16
gas_type
Select the type of air gap for the electrochromic window
Choice
true
false
Air
Air
Air
Argon
Argon
Krypton
Krypton
Xenon
Xenon
ctrl_type
Select control strategy for electrochromic window
Setpoint of glare, radiation, or illuminance should also be set based on selected control strategy
Choice
true
false
OnIfHighGlare
OnIfHighGlare
OnIfHighGlare
OnIfHighSolarOnWindow
OnIfHighSolarOnWindow
MeetDaylightIlluminanceSetpoint
MeetDaylightIlluminanceSetpoint
glare_stp
Maximum allowable discomfort glare index
Electrochromic window will turn to dark state when glare index is above this value.
Double
false
false
22
solar_rad_stp
Total (beam plus diffuse) solar radiation setpoint
Electrochromic window will turn to dark state when total solar radiation is above this value.
Double
W/m2
false
false
800
illum_stp
Illuminance setpoint
The transmittance of the electrochromic window will be adjusted to just meet the daylight illuminance setpoint.
Double
lux
false
false
300
Envelope.Fenestration
Measure Type
ModelMeasure
string
Intended Software Tool
Apply Measure Now
string
Intended Software Tool
OpenStudio Application
string
Intended Software Tool
Parametric Analysis Tool
string
Intended Use Case
Model Articulation
string
Intended Use Case
Calibration
string
Intended Use Case
Sensitivity Analysis
string
Intended Use Case
New Construction EE
string
Intended Use Case
Retrofit EE
string
README.md.erb
erb
readmeerb
703C9964
.gitkeep
gitkeep
doc
00000000
example_model.osm
osm
test
53D14E69
CZ06RV2.epw
epw
test
52282D70
SFD_1story_UB_UA_ASHP2_HPWH.osm
osm
test
F0332415
MediumOffice-90.1-2010-ASHRAE 169-2013-5A.osm
osm
test
A364A953
README.md
md
readme
D4BD56A8
LICENSE.md
md
license
BFFB1AA6
OpenStudio
2.9.1
2.9.1
measure.rb
rb
script
EED95A3E
add_electrochromic_window_test.rb
rb
test
1E202E01