Class: AedgOfficeSwh

Inherits:
OpenStudio::Measure::ModelMeasure
  • Object
show all
Defined in:
lib/measures/AedgOfficeSwh/measure.rb

Overview

start the measure

Instance Method Summary collapse

Instance Method Details

#arguments(model) ⇒ Object

define the arguments that the user will input



33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
 
# File 'lib/measures/AedgOfficeSwh/measure.rb', line 33

def arguments(model)
  args = OpenStudio::Measure::OSArgumentVector.new

  # make an argument for material and installation cost
  costTotalSwhSystem = OpenStudio::Measure::OSArgument.makeDoubleArgument('costTotalSwhSystem', true)
  costTotalSwhSystem.setDisplayName('Total Cost for SWH System ($).')
  costTotalSwhSystem.setDefaultValue(0.0)
  args << costTotalSwhSystem

  # make an argument number of students
  numberOfEmployees = OpenStudio::Measure::OSArgument.makeIntegerArgument('numberOfEmployees', true)
  numberOfEmployees.setDisplayName('Total Number of Employees.')
  # calculate default value
  # get total number of students
  employeeCount = 0
  model.getThermalZones.each do |zone|
    zoneMultiplier = zone.multiplier
    zone.spaces.each do |space|
      if space.spaceType.is_initialized
        if space.spaceType.get.standardsSpaceType.is_initialized
          if space.spaceType.get.standardsBuildingType.is_initialized
            if space.spaceType.get.standardsSpaceType.get.include?('Office') || ((space.spaceType.get.standardsSpaceType.get == 'WholeBuilding') && space.spaceType.get.standardsBuildingType.get.include?('Office'))
              # add up number of people from each classroom space
              employeeCount += space.numberOfPeople * zoneMultiplier
            end
          end
        end
      end
    end
  end
  if employeeCount.to_i > 0
    numberOfEmployees.setDefaultValue(employeeCount.to_i)
  end
  args << numberOfEmployees
  return args
end

#name ⇒ Object

define the name that a user will see, this method may be deprecated as the display name in PAT comes from the name field in measure.xml



28
29
30
 
# File 'lib/measures/AedgOfficeSwh/measure.rb', line 28

def name
  return 'AedgOfficeSwh'
end

#run(model, runner, user_arguments) ⇒ Object

define what happens when the measure is run



71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
 
# File 'lib/measures/AedgOfficeSwh/measure.rb', line 71

def run(model, runner, user_arguments)
  super(model, runner, user_arguments)

  # use the built-in error checking
  if !runner.validateUserArguments(arguments(model), user_arguments)
    return false
  end

  ### START INPUTS
  # assign the user inputs to variables
  costTotalSwhSystem = runner.getDoubleArgumentValue('costTotalSwhSystem', user_arguments)
  numberOfEmployees = runner.getIntegerArgumentValue('numberOfEmployees', user_arguments)
  # default building/space types
  standardBuildingTypeTest = ['Office']
  primarySpaceType = 'Office'
  swhSpaceType = 'Restroom'
  # water use equipment inputs
  waterUsePerEmployee = 0.00000025957074 # m3/s*employee
  ### END INPUTS

  ### START DETERMINE BUILDING TYPE
  standardBuildingType = false
  if model.building.is_initialized
    if model.building.get.standardsBuildingType.is_initialized
      standardBuildingType = model.building.get.standardsBuildingType.get
    end
  end
  unless standardBuildingType
    # search primary space type for standardsBuildingType
    model.getSpaces.each do |space|
      next if standardBuildingType
      if space.spaceType.is_initialized
        if space.spaceType.get.standardsSpaceType.is_initialized
          if space.spaceType.get.standardsBuildingType.is_initialized
            if space.spaceType.get.standardsSpaceType.get.include?(primarySpaceType) || ((space.spaceType.get.standardsSpaceType.get == 'WholeBuilding') && space.spaceType.get.standardsBuildingType.get.include?(primarySpaceType))
              standardBuildingType = space.spaceType.get.standardsBuildingType.get
            end
          end
        end
      end
    end
  end
  building_type = false
  standardBuildingTypeTest.each do |building_type_test|
    if standardBuildingType.include? building_type_test
      building_type = building_type_test
    end
  end
  unless building_type
    # building type not specified or not appropriate for this measure
    runner.registerInfo("Building type is not specified or not supported.  Measure will proceed assuming type is #{standardBuildingTypeTest}.")
    building_type = standardBuildingTypeTest
  end
  ### END DETERMINE BUILDING TYPE

  ### START FIND SWH SPACES
  # for restroom, water use will be applied to each restroom
  numberOfRestrooms = 0
  restroomSpaces = []
  # get all restroom spaces
  model.getSpaces.each do |space|
    if space.spaceType.is_initialized
      if space.spaceType.get.standardsSpaceType.is_initialized
        if space.spaceType.get.standardsSpaceType.get.include? swhSpaceType
          restroomSpaces << space
          numberOfRestrooms += 1
        end
      end
    end
  end
  unless numberOfRestrooms > 0
    runner.registerAsNotApplicable("Model does not have any #{swhSpaceType} spaces.  Measure will not apply #{swhSpaceType} recommendations.")
    return true
  end
  ### END FIND SWH SPACES

  ### START REPORT INITIAL CONDITIONS
  OsLib_HVAC.reportConditions(model, runner, 'initial')
  ### END REPORT INITIAL CONDITIONS

  ### START DELETE EXISTING EQUIPMENT
  # remove plant loops for SWH
  model.getPlantLoops.each do |plantLoop|
    usedForSHW = false
    plantLoop.demandComponents.each do |comp|
      if comp.to_WaterUseConnections.is_initialized
        usedForSHW = true
      end
    end
    if usedForSHW
      plantLoop.remove
      runner.registerWarning("#{plantLoop.name} for service water heating will be deleted so that AEDG recommendations can be applied.")
    end
  end
  ### END DELETE EXISTING EQUIPMENT

  ### START APPLY SWH RECOMMENDATIONS
  # create swh water plant
  swhPlant = OpenStudio::Model::PlantLoop.new(model)
  swhPlant.setName('AEDG SWH Loop')
  swhPlant.setMaximumLoopTemperature(60)
  swhPlant.setMinimumLoopTemperature(10)
  loopSizing = swhPlant.sizingPlant
  loopSizing.setLoopType('Heating')
  loopSizing.setDesignLoopExitTemperature(60) # ML follows convention of sizing temp being larger than supply temp
  loopSizing.setLoopDesignTemperatureDifference(5)
  # create a pump
  pump = OpenStudio::Model::PumpVariableSpeed.new(model)
  pump.setRatedPumpHead(1) # Pa
  pump.setMotorEfficiency(1.0)
  pump.setCoefficient1ofthePartLoadPerformanceCurve(0)
  pump.setCoefficient2ofthePartLoadPerformanceCurve(1)
  pump.setCoefficient3ofthePartLoadPerformanceCurve(0)
  pump.setCoefficient4ofthePartLoadPerformanceCurve(0)
  # supply components
  # create a water heater
  waterHeater = OpenStudio::Model::WaterHeaterMixed.new(model)
  waterHeater.setTankVolume(1) # ML volume is arbitrary; just needs to be big enough to serve building
  waterHeater.setHeaterThermalEfficiency(0.9)
  waterHeater.setOffCycleParasiticHeatFractiontoTank(0.9)
  waterHeater.setAmbientTemperatureIndicator('Schedule')
  # setpoint temperature schedule
  waterHeaterSetpointSchedule = OsLib_Schedules.createComplexSchedule(model, 'name' => 'AEDG Water-Heater-Temp-Schedule',
                                                                             'default_day' => ['All Days', [24, 60.0]])
  waterHeater.setSetpointTemperatureSchedule(waterHeaterSetpointSchedule)
  # ambient temperature schedule
  waterHeaterAmbientTemperatureSchedule = OsLib_Schedules.createComplexSchedule(model, 'name' => 'AEDG Water-Heater-Ambient-Temp-Schedule',
                                                                                       'default_day' => ['All Days', [24, 22.0]])
  waterHeater.setAmbientTemperatureSchedule(waterHeaterAmbientTemperatureSchedule)
  # create a scheduled setpoint manager
  swhSetpointSchedule = OsLib_Schedules.createComplexSchedule(model, 'name' => 'AEDG SWH-Loop-Temp-Schedule',
                                                                     'default_day' => ['All Days', [24, 60.0]])
  setpointManagerScheduled = OpenStudio::Model::SetpointManagerScheduled.new(model, swhSetpointSchedule)
  # create a supply bypass pipe
  pipeSupplyBypass = OpenStudio::Model::PipeAdiabatic.new(model)
  # create a supply outlet pipe
  pipeSupplyOutlet = OpenStudio::Model::PipeAdiabatic.new(model)
  # demand components
  waterUseConnections = []
  # building swh flow fraction schedule
  ruleset_name = 'AEDG SWH-Flow-Fraction-Schedule'
  winter_design_day = [[24, 0]]
  summer_design_day = [[24, 1]]
  default_day = ['Weekday', [7, 0.05], [8, 0.10], [9, 0.34], [10, 0.60], [11, 0.63], [12, 0.72], [13, 0.79], [14, 0.83], [15, 0.61], [16, 0.65], [18, 0.10], [19, 0.19], [20, 0.25], [22, 0.22], [23, 0.12], [24, 0.09]]
  rules = []
  rules << ['Weekend', '1/1-12/31', 'Sat/Sun', [8, 0.03], [14, 0.05], [24, 0.03]]
  rules << ['Summer Weekday', '7/1-8/31', 'Mon/Tue/Wed/Thu/Fri', [7, 0.05], [18, 0.10], [19, 0.19], [20, 0.25], [22, 0.22], [23, 0.12], [24, 0.09]]
  optionsFlowFraction = { 'name' => ruleset_name,
                          'winter_design_day' => winter_design_day,
                          'summer_design_day' => summer_design_day,
                          'default_day' => default_day,
                          'rules' => rules }
  flowFractionSchedule = OsLib_Schedules.createComplexSchedule(model, optionsFlowFraction)
  # target temperature schedule
  targetTemperatureSchedule = OsLib_Schedules.createComplexSchedule(model, 'name' => 'AEDG SWH-Target-Temperature-Schedule',
                                                                           'default_day' => ['All Days', [24, 40]])
  # sensible fraction schedule name
  sensibleFractionSchedule = OsLib_Schedules.createComplexSchedule(model, 'name' => 'AEDG SWH-Sensible-Fraction-Schedule',
                                                                          'default_day' => ['All Days', [24, 0.2]])
  # latent fraction schedule name
  latentFractionSchedule = OsLib_Schedules.createComplexSchedule(model, 'name' => 'AEDG SWH-Latent-Fraction-Schedule',
                                                                        'default_day' => ['All Days', [24, 0.05]])
  # hot water supply temperature schedule
  hotWaterSupplyTemperatureSchedule = OsLib_Schedules.createComplexSchedule(model, 'name' => 'AEDG SWH-Hot-Supply-Temperature-Schedule',
                                                                                   'default_day' => ['All Days', [24, 55]])
  # create water use equipment definitions, equipment, and connections
  waterUsePerRestroom = waterUsePerEmployee * numberOfEmployees / numberOfRestrooms
  # create water use equipment definition for restrooms
  waterUseEquipmentDefinition = OpenStudio::Model::WaterUseEquipmentDefinition.new(model)
  waterUseEquipmentDefinition.setName("AEDG #{swhSpaceType} Water Use")
  waterUseEquipmentDefinition.setPeakFlowRate(waterUsePerRestroom)
  waterUseEquipmentDefinition.setTargetTemperatureSchedule(targetTemperatureSchedule)
  waterUseEquipmentDefinition.setSensibleFractionSchedule(sensibleFractionSchedule)
  waterUseEquipmentDefinition.setLatentFractionSchedule(latentFractionSchedule)
  runner.registerInfo("Adding SWH to #{restroomSpaces.size} restrooms.")
  restroomSpaces.each do |restroomSpace|
    # water use equipment
    waterUseEquipment = OpenStudio::Model::WaterUseEquipment.new(waterUseEquipmentDefinition)
    waterUseEquipment.setSpace(restroomSpace)
    waterUseEquipment.setFlowRateFractionSchedule(flowFractionSchedule)
    # water use connection
    waterUseConnection = OpenStudio::Model::WaterUseConnections.new(model)
    waterUseConnection.addWaterUseEquipment(waterUseEquipment)
    waterUseConnection.setHotWaterSupplyTemperatureSchedule(hotWaterSupplyTemperatureSchedule)
    waterUseConnections << waterUseConnection
  end
  # create a demand bypass pipe
  pipeDemandBypass = OpenStudio::Model::PipeAdiabatic.new(model)
  # create a demand inlet pipe
  pipeDemandInlet = OpenStudio::Model::PipeAdiabatic.new(model)
  # create a demand outlet pipe
  pipeDemandOutlet = OpenStudio::Model::PipeAdiabatic.new(model)
  # connect components to plant loop
  # supply side components
  swhPlant.addSupplyBranchForComponent(waterHeater)
  swhPlant.addSupplyBranchForComponent(pipeSupplyBypass)
  pump.addToNode(swhPlant.supplyInletNode)
  pipeSupplyOutlet.addToNode(swhPlant.supplyOutletNode)
  setpointManagerScheduled.addToNode(swhPlant.supplyOutletNode)
  # demand side components (water coils are added as they are added to airloops and zoneHVAC)
  waterUseConnections.each do |waterUseConnection|
    swhPlant.addDemandBranchForComponent(waterUseConnection)
  end
  swhPlant.addDemandBranchForComponent(pipeDemandBypass)
  pipeDemandInlet.addToNode(swhPlant.demandInletNode)
  pipeDemandOutlet.addToNode(swhPlant.demandOutletNode)
  ### END APPLY SWH RECOMMENDATIONS

  # TODO: - add in lifecycle costs
  expected_life = 25
  years_until_costs_start = 0
  costSwh = costTotalSwhSystem
  lcc_mat = OpenStudio::Model::LifeCycleCost.createLifeCycleCost('Refrigeration System', model.getBuilding, costSwh, 'CostPerEach', 'Construction', expected_life, years_until_costs_start).get

  # add AEDG tips
  aedgTips = ['WH01', 'WH02', 'WH03', 'WH04', 'WH05', 'WH06']

  # populate how to tip messages
  aedgTipsLong = OsLib_AedgMeasures.getLongHowToTips('SmMdOff', aedgTips.uniq.sort, runner)
  if !aedgTipsLong
    return false # this should only happen if measure writer passes bad values to getLongHowToTips
  end

  ### START REPORT FINAL CONDITIONS
  OsLib_HVAC.reportConditions(model, runner, 'final', aedgTipsLong)
  ### END REPORT FINAL CONDITIONS

  return true
end