Shading control by condition and schedule

asked 2021-05-19 09:12:55 -0500

sofiag
45 ●4

updated 2021-05-19 09:46:50 -0500

Hello, I'm using EnergyPlus v.8.7 and I'm trying to control the shading differently according to different situations (time of day): -if there is no people in the house I want them to be closed (shading on) - if there is people in the house I want them to be controlled by one of the options provided (OnNightAndOnDayIfCoolingAndHighSolarOnWindow)

Does anyone know how can I accomplish this? Do I have to program EMS actuators for each window? I want all of them to be controlled the same way so I think there is maybe an easier solution. Can't 2 shading controls be assigned to each window?

Thanks!

answered 2021-05-19 14:50:10 -0500

shorowit

10911 ●180 ●9 https://www.nrel.gov/b...

The E+ v9.5 documentation seems to indicate that you can use "Shading Control Type"="OnNightAndOnDayIfCoolingAndHighSolarOnWindow" in conjunction with a "Schedule Name" (in which you would define the building occupancy). You'd also need to set "Shading Control Is Scheduled"="Yes".

But if it doesn't support that, then I think your only option is to use "Shading Control Type"="OnIfScheduleAllows" and create an EMS program that actuates the schedule value with all the logic (building occupancy, solar radiation vs radiation setpoint, cooling load) embedded within.

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Using "OnNightAndOnDayIfCoolingAndHighSolarOnWindow" in conjunction with a "Schedule Name" wouldn't work because that is like an "AND" condition and I need an "OR" condition. I'll go with OnIfScheduleAllows and actuate the schedule with an EMS program. Thanks!