Setting a new schedule type

asked 2015-05-12 04:15:38 -0600

Antop
353 ●3 ●12

Hallo all,

I would like to set an "outdoor air flow rate fraction schedule" based on the outside temperature. The purpose is to enable the natural ventilation when the external temperature reaches a certain value. Then I need to have two different schedules, for winter and summer.

In the schedule label, I can add a new object. Then, I have to select the schedule type and I should select temperature. Is It internal or external temperature?

Is there some other parameter/schedule that I have to set? Thanks A.

answered 2015-05-12 13:49:16 -0600

David Goldwasser

20405 ●94 ●14 http://www.openstudio.net/

You can't have one schedule assigned for summer and another for winter. If you want a pre-configured schedule with different values in different seasons you would setup one ore more rules with the date range set as desired.

Here is a link to documentation on Rulset Schedules

If you making are making a fraction schedule then you want to use a schedule type of "Fractional". If you want the behavior tied to outside conditions then you want a different type of control system. OpenStudio 1.7.0 simplified the dialog to create a new schedule. In the past you had a long list of "Classes" to choose from, and then chose a "Schedule Type". Now there is just the Schedule Type pull down list which lists the different value types available in EnergyPlus.

image description Screenshot from OpenStudio 1.7.0 new schedule dialog.

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Thanks for the reply.

I would like enable the natural ventilation when the external temperature reaches a certain value: Summer: I have to open the window when the outside temperature is lower then 26ºC Winter : I have to open the window when the outside temperature is upper then 18ºC

Within the "Schedule Type" list, I have selected "temperature". is it the external temperature? Do I have apply it to the "operable window"

Thanks A.