Download - DOE II 建築節能模擬軟體介紹 - 空調節能設計篇
5Copyright 2007 ITRI 工業技術研究院
Institutional buildingNew Construction
20000 m2 juvenile detention facility
Base case constructions and efficiencies are based on California’s Title-24 standards.
6Copyright 2007 ITRI 工業技術研究院
28 種 DOE-2 HVAC 系統DOE-2 Code-Word Description Type Category
Supply Air Volume Economizer Outside Air
Natural Ventilation
Exhaust Fan
Baseboard Heater
Zone Reheat
Built in VisualDOE
RESYS Residential System Packaged Residential Constant No No Yes No Yes No Yes
RESVVTResidential Variable Volume Variable Temperature
Packaged Residential Variable No No No No Yes No Yes
VAVS Variable Air Volume SystemCentral, single duct
Single Duct Variable Yes Yes No Yes Yes Yes Yes
FPH Floor Panel HeatingRadiant Heating
Heating Only n.a. No No No No No No Yes
UHT Unit Heater Zonal Heating Only n.a. No No No No Yes No Yes
UVT Unit Ventilator Zonal Heating Only Constant No Yes No No Yes No Yes
DDS Dual-Duct SystemCentral, dual duct
Air Mixing Variable Yes Yes No Yes Yes No Yes
MZS Mulit-Zone SystemCentral, multi-duct
Air Mixing Constant Yes Yes No Yes Yes No Yes
PMZS Packaged Multi-Zone SystemPackaged, multi-duct
Air Mixing Constant Yes Yes No Yes Yes No Yes
TPFC Two Pipe Fan Coil Zonal Air Mixing Constant No Yes No Yes Yes No Yes
FPFC Four Pipe Fan Coil Zonal Air Mixing Constant No Yes No Yes Yes No Yes
TPIU Two Pipe Induction Unit Zonal Terminal Unit Constant Yes Yes No Yes Yes No Yes
FPIU Four Pipe Induction Unit Zonal Terminal Unit Constant Yes Yes No Yes Yes No Yes
HP Water Loop Heat Pump Zonal Terminal Unit Constant Yes Yes No No Yes No Yes
PTAC Packaged Terminal Air ConditionerZonal, Packaged
Terminal Unit Constant No Yes No Yes Yes No Yes
PVVTPackaged Variable Volume Variable Temperature
Packaged Single Duct Variable Yes Yes No Yes Yes No Yes
EVAP_COOL Evaporative Cooling Central Single Duct Constant Yes Yes No Yes Yes No Yes
PSZ Packaged Single Zone Packaged Single Duct Constant Yes Yes Yes Yes Yes Yes Yes
SZRH Single Zone Reheat Packaged Single Duct Constant Yes Yes No Yes Yes Yes Yes
HVSYS Heating and Ventilation System Central Heating Only Constant Yes Yes No Yes Yes Yes Yes
RHFS Constant Volume Fan Reheat Central Single Duct Constant Yes Yes No Yes Yes Yes Yes
PIU Power Induction Unit Central Single Duct Variable Yes Yes No Yes Yes No Yes
PVAVSPackaged Variable Air Volume System
Packaged Single Duct Variable Yes Yes No Yes Yes Yes Yes
CBVAV Ceiling Bypass Unit Central Single Duct Constant Yes Yes No Yes Yes Yes Yes
SZCISingle Zone Fan System with Ceiling Induction Box
Central Single Duct Constant Yes Yes No Yes Yes Yes Yes
COOL-BEAM Radiant Cooling SystemCentral, Radiant Cooling
Single Duct Constant No Yes No Yes Yes No No
PTGSD Packaged Total-Gas Solid-Desiccant Packaged Single Duct Variable Yes Yes No Yes Yes No No
RESYS2RESYS + OA + Nat. Vent + Heat Recovery
Packaged Residential Constant Yes Yes Yes Yes Yes No No
32Copyright 2007 ITRI 工業技術研究院
DOAS in CVisualDOE 4.0
Create a dummy zone with no thermal loads1ft x 1ft x 1ft, no plenumAssign adiabatic walls, roofs and floors to the dummy zoneSet LPD, EPD, infiltration, and number of people to 0Use Advanced Edit to set floor weight to 10 (light-weight construction)
Create a 100% OA system (DOAS) serving the dummy zoneUse the DOE-2 keyword OA-FROM-SYSTEM to assign the DOAS for other systemsMake sure the DOAS is a constant volume system with adequate outside air amount
33Copyright 2007 ITRI 工業技術研究院
地源式熱泵 Heat Pump 編輯頁面
Use DOE-2 WLHP (Water Loop Heat Pump) SystemGround TemperatureCannot have supplement boilers or cooling towers!
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Demand Control VentilationDOE-2 defaults OA as constant volumeDCV – outside air volume depending on number of occupantsUse the outside air schedule. The hourly ratio represents OA volume as a percentage of DESIGN supply air volume
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模擬精確度Energy
± 8 – 10% monthly energy± 3 – 5% annual energy
Demand± 10 – 12% monthly peak demand± 5 – 6% annual average peak demand
Average monthly error > Annual errorMonitored data can cut the error in half
39Copyright 2007 ITRI 工業技術研究院
模組誤差可能來源Unfamiliar with modeling toolNo clear objective Poor data and model setup
Equipment control (part-load performance)Operating schedulesEquipment sizingVentilationBuilding envelopeInternal loads (LPD, EPD, OCD)Weather data
No quality control – review, checklist, etc.
40Copyright 2007 ITRI 工業技術研究院
模組校準所需資料
Measured LPD, EPD, and number of occupantsWeather dataOperating schedulesEquipment operating performanceUtility bills (Monthly kWh, kW, and therm)
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案例說明
Building 64, ERL/ITRI. Four floors with a basement, total floor area of 7300m²An office building built in 1985Concrete structureDouble-pane windows with ext. shading, WWR 18%Each floor served by a CAV and a VAV systems with DOAS. Basement by a fan-coil unitCentral plant – 2 chillers, 2 cooling towers, 2 CHW and 2 CW pumpsAvg. LPD 14 W/m², avg. EPD 6.8 W/m²
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Plan Views
Basement Floor First Floor Second Floor
Third Floor Fourth Floor
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案例分析 – 其他應用
Evaluate utility offers – to determine which rate structure results in the lowest electricity cost for a specific buildingExplore other EEMS like VSD chillers, heat recovery, daylighting and controls, thermal energy storage, free cooling.