Contents

class ASHRAE9012007 < ASHRAE901
  # @!group Pump

  # Determine type of pump part load control type
  #
  # @code_sections [90.1-2007_6.5.4.1]
  # @param pump [OpenStudio::Model::PumpVariableSpeed] OpenStudio pump object
  # @param plant_loop_type [String] Type of plant loop
  # @param pump_nominal_hp [Float] Pump nominal horsepower
  # @return [String] Pump part load control type
  def pump_variable_speed_get_control_type(pump, plant_loop_type, pump_nominal_hp)
    threshold = 50 # hp

    # Sizing factor to take into account that pumps
    # are typically sized to handle a ~10% pressure
    # increase and ~10% flow increase.
    design_sizing_factor = 1.25

    # Get pump head in Pa
    pump_head_pa = pump.ratedPumpHead

    if pump_nominal_hp * design_sizing_factor > threshold && pump_head_pa > 300_000 # 100 ft. of head
      return 'VSD No Reset'
    else
      return 'Riding Curve'
    end
  end
  end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
openstudio-standards-0.2.14	lib/openstudio-standards/prototypes/ashrae_90_1/ashrae_90_1_2007/ashrae_90_1_2007.PumpVariableSpeed.rb
openstudio-standards-0.2.13	lib/openstudio-standards/prototypes/ashrae_90_1/ashrae_90_1_2007/ashrae_90_1_2007.PumpVariableSpeed.rb
openstudio-standards-0.2.13.rc3	lib/openstudio-standards/prototypes/ashrae_90_1/ashrae_90_1_2007/ashrae_90_1_2007.PumpVariableSpeed.rb