lib/openstudio-standards/hvac_sizing/Siz.HeatingCoolingFuels.rb in openstudio-standards-0.3.0 vs lib/openstudio-standards/hvac_sizing/Siz.HeatingCoolingFuels.rb in openstudio-standards-0.3.1.rc1

@@ -7,11 +7,11 @@
 # please contact [e-mail] and he'll gladly
 # point you in the right direction.
 ###### IMPORTANT NOTE ######
 
 class OpenStudio::Model::Model
-  
+
   # Get the heating fuel type of a plant loop
   # @todo If no heating equipment is found, check if there's a heat exchanger,
   # or a WaterHeater:Mixed or stratified that is connected to a heating source on the demand side
   def plant_loop_heating_fuels(plant_loop)
     fuels = []
@@ -22,25 +22,25 @@
       obj_type = component.iddObjectType.valueName.to_s
       case obj_type
       when 'OS_Boiler_HotWater'
         component = component.to_BoilerHotWater.get
         fuels << component.fuelType
-      when 'OS_Boiler_Steam' 
+      when 'OS_Boiler_Steam'
         component = component.to_BoilerHotWater.get
         fuels << component.fuelType
       when 'OS_DistrictHeating'
-        fuels << 'DistrictHeating' 
+        fuels << 'DistrictHeating'
       when 'OS_HeatPump_WaterToWater_EquationFit_Heating'
         fuels << 'Electricity'
       when 'OS_SolarCollector_FlatPlate_PhotovoltaicThermal'
         fuels << 'SolarEnergy'
       when 'OS_SolarCollector_FlatPlate_Water'
         fuels << 'SolarEnergy'
       when 'OS_SolarCollector_IntegralCollectorStorage'
         fuels << 'SolarEnergy'
       when 'OS_WaterHeater_HeatPump'
-        fuels << 'Electricity'     
+        fuels << 'Electricity'
       when 'OS_WaterHeater_Mixed'
         component = component.to_WaterHeaterMixed.get
 
         # Check if the heater actually has a capacity (otherwise it's simply a Storage Tank)
         if component.heaterMaximumCapacity.empty? || component.heaterMaximumCapacity.get != 0
@@ -63,27 +63,26 @@
         # @todo not sure about whether it should be an elsif or not
         # Check the plant loop connection on the source side
         if component.secondaryPlantLoop.is_initialized
           fuels += self.plant_loop_heating_fuels(component.secondaryPlantLoop.get)
         end
-
       when 'OS_HeatExchanger_FluidToFluid'
         hx = component.to_HeatExchangerFluidToFluid.get
-        cooling_hx_control_types = ["CoolingSetpointModulated", "CoolingSetpointOnOff", "CoolingDifferentialOnOff", "CoolingSetpointOnOffWithComponentOverride"]
+        cooling_hx_control_types = ['CoolingSetpointModulated', 'CoolingSetpointOnOff', 'CoolingDifferentialOnOff', 'CoolingSetpointOnOffWithComponentOverride']
         cooling_hx_control_types.each {|x| x.downcase!}
         if !cooling_hx_control_types.include?(hx.controlType.downcase) && hx.secondaryPlantLoop.is_initialized
           fuels += self.plant_loop_heating_fuels(hx.secondaryPlantLoop.get)
         end
       when 'OS_Node', 'OS_Pump_ConstantSpeed', 'OS_Pump_VariableSpeed', 'OS_Connector_Splitter', 'OS_Connector_Mixer', 'OS_Pipe_Adiabatic'
         # To avoid extraneous debug messages
       else
         #OpenStudio::logFree(OpenStudio::Debug, 'openstudio.sizing.Model', "No heating fuel types found for #{obj_type}")
       end
     end
-    
+
     return fuels.uniq.sort
- 
+
   end
 
   # Get the cooling fuel type of a plant loop
   # Do not search for the fuel used for heat rejection
   # on the condenser loop.
@@ -92,11 +91,11 @@
     # Get the cooling fuels for all supply components
     # on this plant loop.
     plant_loop.supplyComponents.each do |component|
        # Get the object type
       obj_type = component.iddObjectType.valueName.to_s
-      case obj_type  
+      case obj_type
       when 'OS_Chiller_Absorption'
         fuels << 'NaturalGas'
         OpenStudio::logFree(OpenStudio::Warn, 'openstudio.sizing.Model', "Assuming NaturalGas as fuel for absorption chiller.")
       when 'OS_Chiller_Absorption_Indirect'
         fuels << 'NaturalGas'
@@ -117,19 +116,26 @@
         fuels << 'Electricity'
       when 'OS_FluidCooler_SingleSpeed'
         fuels << 'Electricity'
       when 'OS_FluidCooler_TwoSpeed'
         fuels << 'Electricity'
+      when 'OS_HeatExchanger_FluidToFluid'
+        hx = component.to_HeatExchangerFluidToFluid.get
+        cooling_hx_control_types = ['CoolingSetpointModulated', 'CoolingSetpointOnOff', 'CoolingDifferentialOnOff', 'CoolingSetpointOnOffWithComponentOverride']
+        cooling_hx_control_types.each {|x| x.downcase!}
+        if cooling_hx_control_types.include?(hx.controlType.downcase) && hx.secondaryPlantLoop.is_initialized
+          fuels += self.plant_loop_cooling_fuels(hx.secondaryPlantLoop.get)
+        end
       when 'OS_Node', 'OS_Pump_ConstantSpeed', 'OS_Pump_VariableSpeed', 'OS_Connector_Splitter', 'OS_Connector_Mixer', 'OS_Pipe_Adiabatic'
-        # To avoid extraneous debug messages  
+        # To avoid extraneous debug messages
       else
         #OpenStudio::logFree(OpenStudio::Debug, 'openstudio.sizing.Model', "No cooling fuel types found for #{obj_type}")
       end
     end
-    
+
     return fuels.uniq.sort
-    
+
   end
 
   # Get the heating fuel type of a heating coil
   def coil_heating_fuels(heating_coil)
     fuels = []
@@ -159,11 +165,11 @@
       end
     when 'OS_Coil_Heating_Water_BaseboardRadiant'
       heating_coil = heating_coil.to_CoilHeatingWaterBaseboardRadiant.get
         if heating_coil.plantLoop.is_initialized
         fuels += self.plant_loop_heating_fuels(heating_coil.plantLoop.get)
-      end  
+      end
     when 'OS_Coil_Heating_WaterToAirHeatPump_EquationFit'
       fuels << 'Electricity'
       heating_coil = heating_coil.to_CoilHeatingWaterToAirHeatPumpEquationFit.get
       if heating_coil.plantLoop.is_initialized
         fuels += self.plant_loop_heating_fuels(heating_coil.plantLoop.get)
@@ -190,17 +196,17 @@
       fuels << 'Electricity'
     else
       OpenStudio::logFree(OpenStudio::Debug, 'openstudio.sizing.Model', "No heating fuel types found for #{obj_type}")
     end
 
-    return fuels.uniq.sort 
+    return fuels.uniq.sort
 
   end
 
   # Get type of heat for coil for Appendix G system type selections
-  # 
-  # @param heating_coil [object] 
+  #
+  # @param heating_coil [object]
   # @return string description of heat type: Fuel, Electric, District, HeatPump, Solar, Mixed
   def coil_heat_type(heating_coil)
     fuels = []
     heat_type = ''
     # Get the object type
@@ -229,11 +235,11 @@
       end
     when 'OS_Coil_Heating_Water_BaseboardRadiant'
       heating_coil = heating_coil.to_CoilHeatingWaterBaseboardRadiant.get
         if heating_coil.plantLoop.is_initialized
         fuels += self.plant_loop_heating_fuels(heating_coil.plantLoop.get)
-      end  
+      end
     when 'OS_Coil_Heating_WaterToAirHeatPump_EquationFit'
       fuels << 'Electricity'
       heating_coil = heating_coil.to_CoilHeatingWaterToAirHeatPumpEquationFit.get
       if heating_coil.plantLoop.is_initialized
         fuels += self.plant_loop_heating_fuels(heating_coil.plantLoop.get)
@@ -281,11 +287,11 @@
         when 'FuelOilNo1', 'FuelOilNo2'
           has_fuel = true
         end
       end
     end
-    
+
     # Choose only one heat type, or Mixed if there are multiple
     if heat_type == ''
       if has_fuel == true
         heat_type = 'Fuel'
       end
@@ -321,12 +327,12 @@
 
     return heat_type
   end
 
   # Get primary type of heat for one air loop for Appendix G system type selections
-  # 
-  # @param air_loop [object] 
+  #
+  # @param air_loop [object]
   # @return string description of heat type: Fuel, Electric, District, HeatPump, Solar, Mixed
   def airloop_primary_heat_type(air_loop)
 
     heat_types = []
     air_loop.supplyComponents.each do |component|
@@ -360,25 +366,25 @@
       when 'OS_Coil_Heating_Gas'
         heat_types << self.coil_heat_type(component)
       when 'OS_Coil_Heating_Gas_MultiStage'
         heat_types << self.coil_heat_type(component)
       when 'OS_Coil_Heating_Water'
-        heat_types << self.coil_heat_type(component)  
+        heat_types << self.coil_heat_type(component)
       when 'OS_Coil_Heating_WaterToAirHeatPump_EquationFit'
         heat_types << self.coil_heat_type(component)
       when 'OS_Coil_Heating_WaterToAirHeatPump_VariableSpeed_EquationFit'
         heat_types << self.coil_heat_type(component)
       when 'OS_Coil_WaterHeating_AirToWaterHeatPump'
         heat_types << self.coil_heat_type(component)
       when 'OS_Coil_WaterHeating_Desuperheater'
         heat_types << self.coil_heat_type(component)
       when 'OS_Node', 'OS_Fan_ConstantVolume', 'OS_Fan_VariableVolume', 'OS_AirLoopHVAC_OutdoorAirSystem'
-        # To avoid extraneous debug messages  
+        # To avoid extraneous debug messages
       else
         #OpenStudio::logFree(OpenStudio::Debug, 'openstudio.sizing.Model', "No heating fuel types found for #{obj_type}")
       end
-    end    
+    end
 
     has_electric = false
     has_fuel = false
     has_district = false
     has_solar = false
@@ -446,12 +452,12 @@
     return heat_type
 
   end
 
   # Get primary type of heat for one air loop for Appendix G system type selections
-  # 
-  # @param air_loop [object] 
+  #
+  # @param air_loop [object]
   # @return string description of heat type: Fuel, Electric, District, HeatPump, Solar, Mixed
   def zone_equipment_heat_type(zone)
     fuels = []
     heat_type = ''
     # Get the heating fuels for all zone HVAC equipment
@@ -462,48 +468,48 @@
       when 'OS_AirTerminal_SingleDuct_ConstantVolume_FourPipeInduction'
         equipment = equipment.to_AirTerminalSingleDuctConstantVolumeFourPipeInduction.get
         heat_type = self.coil_heat_type(equipment.heatingCoil)
       when 'OS_AirTerminal_SingleDuct_ConstantVolume_Reheat'
         equipment = equipment.to_AirTerminalSingleDuctConstantVolumeReheat.get
-        heat_type = self.coil_heat_type(equipment.reheatCoil)  
+        heat_type = self.coil_heat_type(equipment.reheatCoil)
       when 'OS_AirTerminal_SingleDuct_InletSideMixer'
         # TODO
       when 'OS_AirTerminal_SingleDuct_ParallelPIU_Reheat'
         equipment = equipment.to_AirTerminalSingleDuctParallelPIUReheat.get
-        heat_type = self.coil_heat_type(equipment.reheatCoil) 
+        heat_type = self.coil_heat_type(equipment.reheatCoil)
       when 'OS_AirTerminal_SingleDuct_SeriesPIU_Reheat'
         equipment = equipment.to_AirTerminalSingleDuctSeriesPIUReheat.get
-        heat_type = self.coil_heat_type(equipment.reheatCoil) 
+        heat_type = self.coil_heat_type(equipment.reheatCoil)
       when 'OS_AirTerminal_SingleDuct_VAVHeatAndCool_Reheat'
         equipment = equipment.to_AirTerminalSingleDuctVAVHeatAndCoolReheat.get
-        heat_type = self.coil_heat_type(equipment.reheatCoil) 
+        heat_type = self.coil_heat_type(equipment.reheatCoil)
       when 'OS_AirTerminal_SingleDuct_VAV_Reheat'
         equipment = equipment.to_AirTerminalSingleDuctVAVReheat.get
         heat_type = self.coil_heat_type(equipment.reheatCoil)
       when 'OS_ZoneHVAC_Baseboard_Convective_Water'
         equipment = equipment.to_ZoneHVACBaseboardConvectiveWater.get
-        heat_type = self.coil_heat_type(equipment.heatingCoil) 
+        heat_type = self.coil_heat_type(equipment.heatingCoil)
       when 'OS_ZoneHVAC_Baseboard_RadiantConvective_Water'
         equipment = equipment.to_ZoneHVACBaseboardRadiantConvectiveWater.get
-        heat_type = self.coil_heat_type(equipment.heatingCoil) 
+        heat_type = self.coil_heat_type(equipment.heatingCoil)
       when 'OS_ZoneHVAC_FourPipeFanCoil'
         equipment = equipment.to_ZoneHVACFourPipeFanCoil.get
-        heat_type = self.coil_heat_type(equipment.heatingCoil) 
+        heat_type = self.coil_heat_type(equipment.heatingCoil)
       when 'OS_ZoneHVAC_LowTemperatureRadiant_ConstantFlow'
         equipment = equipment.to_ZoneHVACLowTempRadiantConstFlow.get
-        heat_type = self.coil_heat_type(equipment.heatingCoil) 
+        heat_type = self.coil_heat_type(equipment.heatingCoil)
       when 'OS_ZoneHVAC_LowTemperatureRadiant_VariableFlow'
         equipment = equipment.to_ZoneHVACLowTempRadiantVarFlow.get
-        heat_type = self.coil_heat_type(equipment.heatingCoil) 
+        heat_type = self.coil_heat_type(equipment.heatingCoil)
       when 'OS_ZoneHVAC_UnitHeater'
         equipment = equipment.to_ZoneHVACUnitHeater.get
-        heat_type = self.coil_heat_type(equipment.heatingCoil) 
+        heat_type = self.coil_heat_type(equipment.heatingCoil)
       when 'OS_ZoneHVAC_UnitVentilator'
         equipment = equipment.to_ZoneHVACUnitVentilator.get
         if equipment.heatingCoil.is_initialized
-          heat_type = self.coil_heat_type(equipment.heatingCoil.get) 
-        end 
+          heat_type = self.coil_heat_type(equipment.heatingCoil.get)
+        end
       when 'OS_ZoneHVAC_Baseboard_Convective_Electric'
         heat_type = 'Electric'
       when 'OS_ZoneHVAC_Baseboard_RadiantConvective_Electric'
         heat_type = 'Electric'
       when 'OS_ZoneHVAC_HighTemperatureRadiant'
@@ -540,13 +546,13 @@
         equipment = equipment.to_ZoneHVACWaterToAirHeatPump.get
         heat_type = self.coil_heat_type(equipment.heatingCoil)
       else
         OpenStudio::logFree(OpenStudio::Debug, 'openstudio.sizing.Model', "No heat type found for #{obj_type}")      end
     end
-    
+
     return heat_type
-    
+
   end
 
 
   # Get the cooling fuel type of a cooling coil
   def coil_cooling_fuels(cooling_coil)
@@ -591,21 +597,21 @@
     when 'OS_Coil_Cooling_LowTemperatureRadiant_VariableFlow'
       cooling_coil = cooling_coil.to_CoilCoolingLowTempRadiantVarFlow.get
       if cooling_coil.plantLoop.is_initialized
         fuels += self.plant_loop_cooling_fuels(cooling_coil.plantLoop.get)
       end
-    when 'OS_Coil_Cooling_Water'  
+    when 'OS_Coil_Cooling_Water'
       cooling_coil = cooling_coil.to_CoilCoolingWater.get
       if cooling_coil.plantLoop.is_initialized
         fuels += self.plant_loop_cooling_fuels(cooling_coil.plantLoop.get)
-      end    
+      end
     else
       OpenStudio::logFree(OpenStudio::Debug, 'openstudio.sizing.Model', "No cooling fuel types found for #{obj_type}")
     end
 
     return fuels.uniq.sort
-    
+
   end
 
   # Get the heating fuels for a zone
   # @ return [Array<String>] an array of fuels
   def zone_equipment_heating_fuels(zone)
@@ -613,47 +619,47 @@
     # Get the heating fuels for all zone HVAC equipment
     zone.equipment.each do |equipment|
       # Get the object type
       obj_type = equipment.iddObjectType.valueName.to_s
       case obj_type
-      when 'OS_AirLooHVAC_UnitarySystem'
+      when 'OS_AirLoopHVAC_UnitarySystem'
         equipment = equipment.to_AirLoopHVACUnitarySystem.get
         if equipment.heatingCoil.is_initialized
           fuels += self.coil_heating_fuels(equipment.heatingCoil.get)
         end
       when 'OS_AirTerminal_SingleDuct_ConstantVolume_FourPipeInduction'
         equipment = equipment.to_AirTerminalSingleDuctConstantVolumeFourPipeInduction.get
         fuels += self.coil_heating_fuels(equipment.heatingCoil)
       when 'OS_AirTerminal_SingleDuct_ConstantVolume_Reheat'
         equipment = equipment.to_AirTerminalSingleDuctConstantVolumeReheat.get
-        fuels += self.coil_heating_fuels(equipment.reheatCoil)  
+        fuels += self.coil_heating_fuels(equipment.reheatCoil)
       when 'OS_AirTerminal_SingleDuct_InletSideMixer'
         # @todo complete method
       when 'OS_AirTerminal_SingleDuct_ParallelPIU_Reheat'
         equipment = equipment.to_AirTerminalSingleDuctParallelPIUReheat.get
-        fuels += self.coil_heating_fuels(equipment.reheatCoil) 
+        fuels += self.coil_heating_fuels(equipment.reheatCoil)
       when 'OS_AirTerminal_SingleDuct_SeriesPIU_Reheat'
         equipment = equipment.to_AirTerminalSingleDuctSeriesPIUReheat.get
-        fuels += self.coil_heating_fuels(equipment.reheatCoil) 
+        fuels += self.coil_heating_fuels(equipment.reheatCoil)
       when 'OS_AirTerminal_SingleDuct_VAVHeatAndCool_Reheat'
         equipment = equipment.to_AirTerminalSingleDuctVAVHeatAndCoolReheat.get
-        fuels += self.coil_heating_fuels(equipment.reheatCoil) 
+        fuels += self.coil_heating_fuels(equipment.reheatCoil)
       when 'OS_AirTerminal_SingleDuct_VAV_Reheat'
         equipment = equipment.to_AirTerminalSingleDuctVAVReheat.get
         fuels += self.coil_heating_fuels(equipment.reheatCoil)
       when 'OS_ZoneHVAC_Baseboard_Convective_Water'
         equipment = equipment.to_ZoneHVACBaseboardConvectiveWater.get
-        fuels += self.coil_heating_fuels(equipment.heatingCoil) 
+        fuels += self.coil_heating_fuels(equipment.heatingCoil)
       when 'OS_ZoneHVAC_Baseboard_RadiantConvective_Water'
         equipment = equipment.to_ZoneHVACBaseboardRadiantConvectiveWater.get
-        fuels += self.coil_heating_fuels(equipment.heatingCoil) 
+        fuels += self.coil_heating_fuels(equipment.heatingCoil)
       when 'OS_ZoneHVAC_FourPipeFanCoil'
         equipment = equipment.to_ZoneHVACFourPipeFanCoil.get
-        fuels += self.coil_heating_fuels(equipment.heatingCoil) 
+        fuels += self.coil_heating_fuels(equipment.heatingCoil)
       when 'OS_ZoneHVAC_LowTemperatureRadiant_ConstantFlow'
         equipment = equipment.to_ZoneHVACLowTempRadiantConstFlow.get
-        fuels += self.coil_heating_fuels(equipment.heatingCoil) 
+        fuels += self.coil_heating_fuels(equipment.heatingCoil)
       when 'OS_ZoneHVAC_LowTemperatureRadiant_VariableFlow'
         equipment = equipment.to_ZoneHVACLowTempRadiantVarFlow.get
         if equipment.model.version < OpenStudio::VersionString.new('3.2.0')
           fuels += self.coil_heating_fuels(equipment.heatingCoil)
         else
@@ -661,16 +667,16 @@
             fuels += self.coil_heating_fuels(equipment.heatingCoil.get)
           end
         end
       when 'OS_ZoneHVAC_UnitHeater'
         equipment = equipment.to_ZoneHVACUnitHeater.get
-        fuels += self.coil_heating_fuels(equipment.heatingCoil) 
+        fuels += self.coil_heating_fuels(equipment.heatingCoil)
       when 'OS_ZoneHVAC_UnitVentilator'
         equipment = equipment.to_ZoneHVACUnitVentilator.get
         if equipment.heatingCoil.is_initialized
-          fuels += self.coil_heating_fuels(equipment.heatingCoil.get) 
-        end 
+          fuels += self.coil_heating_fuels(equipment.heatingCoil.get)
+        end
       when 'OS_ZoneHVAC_Baseboard_Convective_Electric'
         fuels << 'Electricity'
       when 'OS_ZoneHVAC_Baseboard_RadiantConvective_Electric'
         fuels << 'Electricity'
       when 'OS_ZoneHVAC_HighTemperatureRadiant'
@@ -693,13 +699,13 @@
         fuels += self.coil_heating_fuels(equipment.heatingCoil)
       else
         OpenStudio::logFree(OpenStudio::Debug, 'openstudio.sizing.Model', "No heating fuel types found for #{obj_type}")
       end
     end
-    
+
     return fuels.uniq.sort
-    
+
   end
 
   # Get the cooling fuels for a zone
   def zone_equipment_cooling_fuels(zone)
     fuels = []
@@ -714,14 +720,14 @@
           fuels += self.coil_cooling_fuels(equipment.coolingCoil.get)
         end
       when 'OS_AirTerminal_SingleDuct_ConstantVolume_CooledBeam'
         equipment = equipment.to_AirTerminalSingleDuctConstantVolumeCooledBeam.get
         fuels += self.coil_cooling_fuels(equipment.coilCoolingCooledBeam)
-      when 'OS_AirTerminal_SingleDuct_ConstantVolume_FourPipeInduction'      
+      when 'OS_AirTerminal_SingleDuct_ConstantVolume_FourPipeInduction'
         equipment = equipment.to_AirTerminalSingleDuctConstantVolumeFourPipeInduction.get
         if equipment.coolingCoil.is_initialized
-          fuels += self.coil_cooling_fuels(equipment.coolingCoil.get) 
+          fuels += self.coil_cooling_fuels(equipment.coolingCoil.get)
         end
       when 'OS_ZoneHVAC_FourPipeFanCoil'
         equipment = equipment.to_ZoneHVACFourPipeFanCoil.get
         fuels += self.coil_cooling_fuels(equipment.coolingCoil)
       when 'OS_ZoneHVAC_LowTemperatureRadiant_ConstantFlow'
@@ -750,11 +756,11 @@
         OpenStudio::logFree(OpenStudio::Debug, 'openstudio.sizing.Model', "No cooling fuel types found for #{obj_type}")
       end
     end
 
     return fuels.uniq.sort
-    
+
   end
 
   # Get the heating fuels for a zones airloop
   def zone_airloop_heating_fuels(zone)
     fuels = []
@@ -762,11 +768,11 @@
     air_loop = zone.airLoopHVAC
     if air_loop.empty?
       return fuels
     end
     air_loop = air_loop.get
-    
+
     # Find fuel types of all equipment
     # on the supply side of this airloop.
     air_loop.supplyComponents.each do |component|
        # Get the object type
       obj_type = component.iddObjectType.valueName.to_s
@@ -798,28 +804,28 @@
       when 'OS_Coil_Heating_Gas'
         fuels += self.coil_heating_fuels(component)
       when 'OS_Coil_Heating_Gas_MultiStage'
         fuels += self.coil_heating_fuels(component)
       when 'OS_Coil_Heating_Water'
-        fuels += self.coil_heating_fuels(component)  
+        fuels += self.coil_heating_fuels(component)
       when 'OS_Coil_Heating_WaterToAirHeatPump_EquationFit'
         fuels += self.coil_heating_fuels(component)
       when 'OS_Coil_Heating_WaterToAirHeatPump_VariableSpeed_EquationFit'
         fuels += self.coil_heating_fuels(component)
       when 'OS_Coil_WaterHeating_AirToWaterHeatPump'
         fuels += self.coil_heating_fuels(component)
       when 'OS_Coil_WaterHeating_Desuperheater'
         fuels += self.coil_heating_fuels(component)
       when 'OS_Node', 'OS_Fan_ConstantVolume', 'OS_Fan_VariableVolume', 'OS_AirLoopHVAC_OutdoorAirSystem'
-        # To avoid extraneous debug messages  
+        # To avoid extraneous debug messages
       else
         #OpenStudio::logFree(OpenStudio::Debug, 'openstudio.sizing.Model', "No heating fuel types found for #{obj_type}")
       end
-    end    
- 
+    end
+
     return fuels.uniq.sort
-    
+
   end
 
   # Get the cooling fuels for a zones airloop
   def zone_airloop_cooling_fuels(zone)
     fuels = []
@@ -827,11 +833,11 @@
     air_loop = zone.airLoopHVAC
     if air_loop.empty?
       return fuels
     end
     air_loop = air_loop.get
-    
+
     # Find fuel types of all equipment
     # on the supply side of this airloop.
     air_loop.supplyComponents.each do |component|
        # Get the object type
       obj_type = component.iddObjectType.valueName.to_s
@@ -851,11 +857,11 @@
           fuels += self.coil_cooling_fuels(component.coolingCoil.get)
         end
       when 'OS_EvaporativeCooler_Direct_ResearchSpecial'
         fuels << 'Electricity'
       when 'OS_EvaporativeCooler_Indirect_ResearchSpecial'
-        fuels << 'Electricity'  
+        fuels << 'Electricity'
       when 'OS_Coil_Cooling_DX_MultiSpeed'
         fuels += self.coil_cooling_fuels(component)
       when 'OS_Coil_Cooling_DX_SingleSpeed'
         fuels += self.coil_cooling_fuels(component)
       when 'OS_Coil_Cooling_DX_TwoSpeed'
@@ -872,21 +878,21 @@
         fuels += self.coil_cooling_fuels(component)
       when 'OS_CoilSystem_Cooling_DX_HeatExchangerAssisted'
         fuels += self.coil_cooling_fuels(component)
       when 'OS_CoilSystem_Cooling_Water_HeatExchangerAssisted'
         fuels += self.coil_cooling_fuels(component)
-      when 'OS_Coil_Cooling_Water'      
-        fuels += self.coil_cooling_fuels(component)  
+      when 'OS_Coil_Cooling_Water'
+        fuels += self.coil_cooling_fuels(component)
       when 'OS_HeatPump_WaterToWater_EquationFit_Cooling'
         fuels += self.coil_cooling_fuels(component)
       when 'OS_Node', 'OS_Fan_ConstantVolume', 'OS_Fan_VariableVolume', 'OS_AirLoopHVAC_OutdoorAirSystem'
-        # To avoid extraneous debug messages  
+        # To avoid extraneous debug messages
       else
         #OpenStudio::logFree(OpenStudio::Debug, 'openstudio.sizing.Model', "No heating fuel types found for #{obj_type}")
       end
-    end    
- 
+    end
+
     return fuels.uniq.sort
-    
-  end     
-  
+
+  end
+
 end