Class: OpenStudio::Model::HeaderedPumpsConstantSpeed

Inherits:
Object
  • Object
show all
Includes:
Pump
Defined in:
lib/openstudio-standards/standards/Standards.HeaderedPumpsConstantSpeed.rb,
lib/openstudio-standards/hvac_sizing/Siz.HeaderedPumpsConstantSpeed.rb

Overview

open the class to add methods to return sizing values

Instance Method Summary collapse

Methods included from Pump

#apply_prm_pressure_rise_and_motor_efficiency, #apply_standard_minimum_motor_efficiency, #brake_horsepower, #motor_horsepower, #pump_power, #rated_w_per_gpm, #standard_minimum_motor_efficiency_and_size

Instance Method Details

#applySizingValues ⇒ Object

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.



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# File 'lib/openstudio-standards/hvac_sizing/Siz.HeaderedPumpsConstantSpeed.rb', line 14

def applySizingValues

  rated_flow_rate = self.autosizedTotalRatedFlowRate
  if rated_flow_rate.is_initialized
    self.setTotalRatedFlowRate(rated_flow_rate.get) 
  end

  rated_power_consumption = self.autosizedRatedPowerConsumption
  if rated_power_consumption.is_initialized
    self.setRatedPowerConsumption(rated_power_consumption.get)
  end

end

#autosize ⇒ Object

Sets all auto-sizeable fields to autosize



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# File 'lib/openstudio-standards/hvac_sizing/Siz.HeaderedPumpsConstantSpeed.rb', line 6

def autosize
  self.autosizeTotalRatedFlowRate
  self.autosizeRatedPowerConsumption
end

#autosizedRatedFlowRate ⇒ OptionalDouble

Takes the total rated flow rate and returns per-pump values as an optional double

Returns:

  • (OptionalDouble) —

    the total rated flow rate per pump



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# File 'lib/openstudio-standards/standards/Standards.HeaderedPumpsConstantSpeed.rb', line 9

def autosizedRatedFlowRate
  result = OpenStudio::OptionalDouble.new
  total_rated_flow_rate = autosizedTotalRatedFlowRate
  if total_rated_flow_rate.is_initialized
    per_pump_rated_flow_rate = total_rated_flow_rate.get / numberofPumpsinBank
    result = OpenStudio::OptionalDouble.new(per_pump_rated_flow_rate)
  end

  return result
end

#autosizedRatedPowerConsumption ⇒ Object

returns the autosized rated power consumption as an optional double



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# File 'lib/openstudio-standards/hvac_sizing/Siz.HeaderedPumpsConstantSpeed.rb', line 43

def autosizedRatedPowerConsumption

  # In E+ 8.5, (OS 1.10.5 onward) the column name changed
  col_name = nil
  if self.model.version < OpenStudio::VersionString.new('1.10.5')
    col_name = 'Rated Power Consumption'
  else
    col_name = 'Design Power Consumption'
  end

  return self.model.getAutosizedValue(self, col_name, 'W')
end

#autosizedTotalRatedFlowRate ⇒ Object

returns the autosized rated flow rate as an optional double



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# File 'lib/openstudio-standards/hvac_sizing/Siz.HeaderedPumpsConstantSpeed.rb', line 29

def autosizedTotalRatedFlowRate

  # In E+ 8.5, (OS 1.10.5 onward) the column name changed
  col_name = nil
  if self.model.version < OpenStudio::VersionString.new('1.10.5')
    col_name = 'Rated Flow Rate'
  else
    col_name = 'Design Flow Rate'
  end

  return self.model.getAutosizedValue(self, col_name, 'm3/s')
end

#ratedFlowRate ⇒ OptionalDouble

Takes the total rated flow rate and returns per-pump values as an optional double

Returns:

  • (OptionalDouble) —

    the total rated flow rate per pump



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# File 'lib/openstudio-standards/standards/Standards.HeaderedPumpsConstantSpeed.rb', line 23

def ratedFlowRate
  result = OpenStudio::OptionalDouble.new
  total_rated_flow_rate = totalRatedFlowRate
  if total_rated_flow_rate.is_initialized
    per_pump_rated_flow_rate = total_rated_flow_rate.get / numberofPumpsinBank
    result = OpenStudio::OptionalDouble.new(per_pump_rated_flow_rate)
  end

  return result
end