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output the hours of each condition of dynamic shading (closed-open-partially shaded)

asked 2017-01-12 02:44:51 -0500

rewaaesam@hotmail.com gravatar image

updated 2017-01-19 09:15:24 -0500

In case of using dynamic glazing and shading in EnergyPlus, how can I output the hours of each condition, that the shading was closed, opened, and partially shaded?

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answered 2017-01-13 09:49:23 -0500

updated 2017-01-19 09:16:02 -0500

In EnergyPlus shades can either be closed or open and not partially open, see WindowProperty:ShadingControl for more information. To report the status the easiest way may be to use the Surface Shading Device Is On Time Fraction output variable. A demonstration of how to use that output variable with tabular reports is in the WindowTests.idf file and is called Window Report.

  Output:Table:Monthly,
    Window Report,           !- Name
    ,                        !- Digits After Decimal
    Surface Window Transmitted Solar Radiation Rate,  !- Variable or Meter 1 Name
    SumOrAverage,            !- Aggregation Type for Variable or Meter 1
    Surface Window Transmitted Beam Solar Radiation Rate,  !- Variable or Meter 2 Name
    SumOrAverage,            !- Aggregation Type for Variable or Meter 2
    Surface Window Transmitted Diffuse Solar Radiation Rate,  !- Variable or Meter 3 Name
    SumOrAverage,            !- Aggregation Type for Variable or Meter 3
    Surface Window Heat Gain Rate,  !- Variable or Meter 4 Name
    SumOrAverage,            !- Aggregation Type for Variable or Meter 4
    Surface Window Heat Loss Rate,  !- Variable or Meter 5 Name
    SumOrAverage,            !- Aggregation Type for Variable or Meter 5
    Surface Window Inside Face Glazing Condensation Status,  !- Variable or Meter 6 Name
    HoursNonZero,            !- Aggregation Type for Variable or Meter 6
    Surface Shading Device Is On Time Fraction,  !- Variable or Meter 7 Name
    HoursNonZero,            !- Aggregation Type for Variable or Meter 7
    Surface Storm Window On Off Status,  !- Variable or Meter 8 Name
    HoursNonZero;            !- Aggregation Type for Variable or Meter 8

The variable is shown as Variable or Meter 7 Name in the example above. It is shown with HoursNonZero aggregation type but you could also add HoursZero aggregation type to see both hourly numbers.

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thank you for replying

for dynamic shading, I want to chek if is right or not, to have 3 windowMaterial: blind with different slat angle (30,60,135) and to have three construction with these three blinds, and to design EMS Program to change these three constructions according to temperature ( like the idea of thermochromic glazing )???

@JasonGlazer

rewaaesam@hotmail.com gravatar image rewaaesam@hotmail.com  ( 2017-01-14 04:14:07 -0500 )edit

Sorry, you did not mention blinds only "shading" so I thought you were just talking about shades. If you use WindowProperty:ShadingControl you can also specify blinds and the slat angle for the blind. Using EMS, you can vary the slat angle of the blind using the Slat Angle actuator. You can use EMS to use the temperature as a Sensor to control the blind angle. An output variable called Surface Window Blind Slat Angle can be used. See the EMS example files.

JasonGlazer gravatar image JasonGlazer  ( 2017-01-16 06:40:59 -0500 )edit

this what I did exactly, for dynamic shading, to have 3 windowMaterial: blind with different slat angle (30,60,135) and to have three construction with these three blinds, and to design EMS Program to change these three constructions according to temperature ( like the idea of thermochromic glazing )

I want to ask, how to have a dynamic horizontal sun breakers with EMS with wide more than 1 meter because the blind are not more than 1 meter?? @JasonGlazer

rewaaesam@hotmail.com gravatar image rewaaesam@hotmail.com  ( 2017-01-20 10:52:37 -0500 )edit

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Asked: 2017-01-12 02:44:51 -0500

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Last updated: Jan 19 '17