doe ii 建築節能模擬軟體介紹 - 空調節能設計篇

DOE II 建築節能模擬軟體介紹- 空調節能設計篇

工研院能環所

李浩銓

August 29, 2007

Architectural Energy Corporation

3Copyright 2007 ITRI 工業技術研究院

CVisualDOE 建築節能模擬軟體簡介


節能方案


Institutional buildingNew Construction

20000 m2 juvenile detention facility

Base case constructions and efficiencies are based on California’s Title-24 standards.


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


Four-Pipe Fan Coil

2.1A Reference Manual, p. IV-160


Variable Air Volume System

2.1A Reference Manual, p. IV-172


CVisualdoe – 專案頁面


CVisualdoe – 區塊頁面


標準區塊


自定區塊

A floor plan of Four Times Square green office tower in New York


CVisualdoe – 房間頁面


CVisualdoe – 外牆頁面


CVisualdoe – 空調送風系統頁面


CVisualdoe – 區域頁面


CVisualdoe - 3D 視圖


CVisualdoe – 空調系統編輯頁


CVisualdoe – 主機房編輯頁


CVisualdoe – 編輯器


CVisualdoe – 建築外牆結構編輯


CVisualdoe – 時程編輯


CVisualdoe – 節能方案編輯


CVisualdoe – 檢查模組定義


CVisualdoe – 空調區域診斷系統


CVisualdoe – 模擬結果 ( 使用電力 )


CVisualdoe – 結果 ( 耗能成本 )


CVisualdoe – 報告 ( 空調系統 )


CVisualdoe – 報告 ( 以綠建築 leed 報告型態輸出 )


CVisualdoe – 耗能結構分析圖


CVisualdoe – 耗能結構分析圖 2


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


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!


熱泵 Heat Pump 編輯頁面


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


Default OA Schedule


DCV OA Schedule


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


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.


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)


案例分析 - 模擬軟體應用介紹


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


Plan Views

Basement Floor First Floor Second Floor

Third Floor Fourth Floor


3D View


案例模擬結果 - 耗能結構圖


案例 – 模組校準結果


節能方案說明


節能方案模擬結果


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.


評估台電各種費率


時間電費編輯


最佳費率選擇

Questions

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