Throughout the Day Exercise: Primary ...



Throughout the Day Exercise: Primary SchoolPurpose: Practice basic inputs and navigationNote: We will create these short exercises throughout the day. Use the default values for any information not givenExercise 1: Rooms Exercise Open existing file Primary School Addition-1 and navigate to the Building & Site In Create Building, draw rooms and rename them based on the imported floor plan image 301 Classroom302 Classroom303 Classroom304 Classroom305 Computer LabLibraryWing 3 CorridorAdd banded windows for 35% of exterior walls at a sill height of 42” on all exterior walls.Rename rooms and assign Room Types as shown in the Room Type column in Table 1Table 1. Room assignment Room NameRoom TypePrimary School (K-12)Existing or NewWing 3 CorridorHallway/CorridorNew301 Classroom Classroom-MultiuseNew302 Classroom Classroom-MultiuseNew303 Classroom Classroom-MultiuseNew304 Classroom Classroom-MultiuseNew305 Computer Lab Computer ClassroomNewLibraryLibrary/Media CenterNewVerify that the Design Supply Airflow is auto-sized for each room in Room Properties>AirflowsEnsure the correct Ventilation Rate and Room Type has been appliedTable 2. Ventilation space type and rateRoomVentilation Space Type62.1-13 Educational Facilities (unless otherwise noted) Ventilation Rates cfm/occ cfm/ft2 Wing 3 Corridor (New)62.1-13 General-Corridors00.06301Classroom (New)Classrooms (age 9 plus)100.12302 Classroom (New)Classrooms (age 9 plus)100.12303 Classroom (New)Classrooms (age 9 plus)100.12304 Classroom (New)Classrooms (age 9 plus)100.12305 Computer Lab (New)Computer Lab100.12Library (New)Media Center100.12Verify/change proper room exhaust in Room Properties>Room ExhaustKitchen type: School-Kitchen Exhaust (3300 cfm)Restrooms changed from type: General Restroom (2 cfm/ft2) to 10 ACHAll others: NoneNavigate to Create Zones, Zone Type tab Copy Zone Type, Primary School (K-12). Rename it as Primary School Library and enter in the following properties:Cooling:72/75 (setpoint/driftpoint)Heating: 69/66 (setpoint/driftpoint)Dehumidify:45/50 (setpoint/driftpoint)Assign spaces to new zone in Zoning tabAdd Wing 3 Corridor to Entrance and halls zoneEither Auto Assign or Add Zones and individually add each room to its own zoneRename zonesTable 3. Zone assignmentRoom NameZoneZone TypeWing 3 Corridor (New)Entrance and hallsPrimary School (K-12)301 Classroom (New)Wing 3 SPrimary School (K-12)302 Classroom (New)Wing 3 SPrimary School (K-12)303 Classroom (New)Wing 3 NPrimary School (K-12)304 Classroom (New)Wing 3 NPrimary School (K-12)305 Computer Lab (New)305Primary School (K-12)Library (New)LibraryPrimary School LibraryNavigate to Create SiteAdd 100 ft. Horizontal Rotor Wind Turbine 40’ west of the southwest corner of 101 ClassroomExercise 2: Systems Exercise Purpose: Practice basic inputs and navigation.Note: Use the default values for any information not givenOpen file named Primary School Addition-2Add VAV RH (30% Min Default) (CW) for wing 3 classroomsRename to AHU-6Ensure that the heating coil is a Water Heating CoilEnsure that the cooling coil is Counterflow Chilled Water CoilUpdate static pressure to 3.5” wgAdd SZVAV for libraryRename to RTU-7Ensure that the heating coil is an Electric Heating CoilEnsure that the cooling coil is 10-25 Ton VAV Packaged CS RTUAdd humidifier immediately after the cooling coil Add humidity controller and connect it to the humidifierUpdate static pressure to 2” wgChange the RTU for the Admin zone from SZCV to SZVAVDelete RTU-2Add SZVAVName RTU-2aEnsure that the heating coil is an Electric Heating CoilEnsure that the cooling coil is 10-25 Ton VAV Packaged CS RTUUpdate static pressure to 3.5” wgAdd economizer control based the requirements for ASHRAE 90.1 climate zone 3A (see table 4 below for requirements)Assign Zones based on table 5 “Rooftops and Air Handler Units” Table 4. High-limit shutoof control settings for air economizersbControl TypeAllowed only in Climate Zone at Listed SetpointRequired High-Limit Setpoints (Economizer Off When)EquationDescriptionFixed dry-bulb temperature1b, 2b, 3b, 3c, 4b, 4c, 5b, 5c, 6b, 7,8,TOA>75°FOutdoor air temperature exceeds 75°F5a, 6aTOA>70°FOutdoor air temperature exceeds 70°F1a, 2a, 3a, 4aTOA>65°FOutdoor air temperature exceeds 65°FDifferential dry-bulb temperature1b, 2b, 3b, 3c, 4b, 4c, 5b, 5c, 6a, 6b, 7,8,TOA> TRAOutdoor temperature exceeds return air temperatureFixed enthalpy with fixed dry-bulb temperatureAllhOA>28Btu/lba or TOA>75°FOutdoor air enthalpy exceeds 28 Btu/lba of dry aira or outdoor air temperature exceeds 75°FDifferential enthalpy with fixed dry-bulb temperatureAllhOA> hRA or TOA>75°FOutdoor air enthalpy exceeds return air enthalpy or outdoor air temperature exceeds 75°FAt altitudes substantially different than sea level, the fixed enthalpy limit shall be set to the enthalpy value at 75°F and 50% RH. As an example, at approximately 6000 ft. elevation, the fixed enthalpy limit is approximately 30.7 Btu/lb.Devices with selectable rather than adjustable setpoints shall be capable of being set to within 2°F and 2 Btu/lb of the setpoint listed. Table 5. Rooftop and Air Handler UnitsRooftop and Air Handler UnitsUnitZones ServedNew or Existing System?ControlSupply FanHeating [MBh]Cooling [Ton]?CFMESPTypeCapacityCapacityNotesRTU-1Entrance and hallsExistingConstant2"AF?SZCVRTU-2AdminExistingConstant?3.5"AF??Change from CV RTU-2aAdminNewVariable?3.5"AF??To SZVAVRTU-3GymExistingConstant?1.5"AF??SZCVRTU-4KitchenExistingConstant?2"AF??SZCVRTU-5CafeteriaExistingConstant?2"AF??SZCVAHU-6Wing 3 S, Wing 3 N, 305NewVariable3.5”AFVAV RHRTU-7LibraryNewVariable?2"AF??SZVAVExercise 3: Plants Exercise Purpose: Practice loop creation/modification and addition to projectNote: Use the default values for any information not givenOpen file named Primary School Addition-3 Go into library to create loopLibrary > Equipment > AppBar > Import from TOPSSImport chiller from TOPSS .xml provided (RTWD 80 ton Std Eff AHRI Temps.xml), Hint: It will be in the Water-Cooled Chiller (Simple) libraryLibrary > Loops > Chilled WaterCreate a new Chilled Water (Water-Cooled) loop in the library2 parallel WC chillers with imported chiller for both2 VFD pumpsWater Temperature ControllerRename the loop, Hint: Add one chiller and one VFD pump, then let the program do the work for youMove Library Item to Water-Cooled Chilled Water Loops GroupDelete existing chilled water loopAdd newly created loop from Water-Cooled FolderAssign Chillers Plant to Condenser LoopAssign Systems to Chilled Water LoopExercise 4: Utility Rate Exercise Purpose: Practice basic inputs and navigationNote: Use the default values for any information not givenGo into LibraryCreate utility rate based on information belowBe sure to set demand rates to noneTable 6. Utility rates(Adapted from Georgia Power City of Atlanta Department of Watershed Management, )ElectricityMonthly Service Charge$19.00 ??Tax Rate?8%??Minimum Charge?$56.00 ??Consumption < 200 hours times Demand???$0.12 per kWh up to 3,000 kWh?$0.11 per kWh up to 10,000 kWh?$0.09 per kWh up to 100,000 kWh?$0.07 per kWh for all remaining?Consumption > 200 hours but < 400 hours times Demand?$0.0114 per kWh??Consumption > 400 hours but < 600 hours times Demand?$0.007 per kWh??Consumption > 600 hours times Demand???$0.006 per kWh??Natural GasMonthly Service Charge$8.99 ??Tax Rate?8%??Consumption?$0.59 per therm?WaterMonthly Service Charge$6.56 ??Tax Rate?0%??Consumption?????$3.45 per kgal up to 2.25 kgal??$7.13 per kgal up to 4.50 kgal??$8.23 per kgal for all remaining?Exercise 5: Economics Exercise Purpose: Practice basic inputs and navigationNote: Use the default values for any information not givenOpen file named Primary School Addition-4Delete existing utility rateAdd utility rate created in exercise 4 from unassigned folderSkip custom metersEnter life cycle parameters and costs per information below:Economic InformationLife Cycle Study Life20 yearsCostsInitial investment$160,000Yearly maintenance$2,500Equipment repair$19,000 in year 10Hint: Repair costs start in year 1Exercise 6: Alternatives ExercisePurpose: User creates new linked alternatives and edits a sections of the new alternative (Plants, Economics)Note: Use the default values for any information not givenContinue to use file named Primary School Addition-4 or Open Primary School Addition-5Create 2nd Alternative linked to Alt 1Click on ‘Project Summary’ in Navigation barCreate new Alternative by clicking Add Linked Alt button at the top of Alt 1. This creates a new linked alt that has identical information in each section as the source alternativeThe 2nd alternative is created, now the ‘links’ will be brokenClick the Linked Dropdown Menu of the Plants and Economics sections and select the option to ‘Un-link’ each of these sectionThe Linked symbol changes from Red to Black and the Plants and Economics sections are now editable Modify the equipment in the Plants sectionOpen the Plants section in Alt 2 and go to Configure PlantsDelete WCH-2 and VFDP-2 by pressing the Delete button in the tree, both pumps will be deletedAdd VFD Pump upstream of chiller. Use ASHRAE 90.1 VS/VV Chilled Water PumpChange WCH-1 to “150-300 Ton CVHS w/VFD 10dT". This is done in the Properties for the WCH-1 piece of equipmentSet the chiller capacity at 170 TonsVerify that the configuration passes the Scan for Errors. If not, resolve the errorsNavigate to Economics section to change the installed costs ($175,000). The other costs are unchangedCalculate the file and compare the energy and cost savings between the alternatives ................
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