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# open the class to add methods to return sizing values
class OpenStudio::Model::SizingSystem
# Sets all auto-sizeable fields to autosize
def autosize
self.autosizeDesignOutdoorAirFlowRate
end
# Takes the values calculated by the EnergyPlus sizing routines
# and puts them into this object model in place of the autosized fields.
# Must have previously completed a run with sql output for this to work.
def applySizingValues
# In OpenStudio, the design OA flow rates are calculated by the
# Controller:OutdoorAir object associated with this system.
# Therefore, this property will be retrieved from that object's sizing values
air_loop = self.airLoopHVAC
if air_loop.airLoopHVACOutdoorAirSystem.is_initialized
controller_oa = air_loop.airLoopHVACOutdoorAirSystem.get.getControllerOutdoorAir
# get the max oa flow rate from the controller:outdoor air sizing
maximum_outdoor_air_flow_rate = controller_oa.autosizedMaximumOutdoorAirFlowRate
if maximum_outdoor_air_flow_rate.is_initialized
self.setDesignOutdoorAirFlowRate(maximum_outdoor_air_flow_rate.get)
# Set the OA flow method to "ZoneSum" to avoid severe errors
# in the fully hard-sized model.
self.setSystemOutdoorAirMethod("ZoneSum")
end
end
end
# returns the autosized maximum outdoor air flow rate as an optional double
def autosizedMaximumOutdoorAirFlowRate
return self.model.getAutosizedValue(self, 'Maximum Outdoor Air Flow Rate', 'm3/s')
end
# returns the autosized minimum outdoor air flow rate as an optional double
def autosizedMinimumOutdoorAirFlowRate
return self.model.getAutosizedValue(self, 'Minimum Outdoor Air Flow Rate', 'm3/s')
end
end
Version data entries
54 entries across 54 versions & 1 rubygems