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

CVisualDOE建築節能模擬軟體簡介

節能方案

Institutional building New 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

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 loads 1ft x 1ft x 1ft, no plenum Assign adiabatic walls, roofs and floors to the dummy zone Set LPD, EPD, infiltration, and number of people to 0 Use Advanced Edit to set floor weight to 10 (light-weight construction) Create a 100% OA system (DOAS) serving the dummy zone Use the DOE-2 keyword OA-FROM-SYSTEM to assign the DOAS for other systems Make 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) System Ground Temperature Cannot have supplement boilers or cooling towers!

熱泵Heat Pump 編輯頁面

Demand Control Ventilation DOE-2 defaults OA as constant volume DCV – outside air volume depending on number of occupants Use the outside air schedule. The hourly ratio represents OA volume as a percentage of DESIGN supply air volume

Default OA Schedule

DCV OA Schedule

Average monthly error > Annual error 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 error Monitored data can cut the error in half

模組誤差可能來源 Unfamiliar with modeling tool No clear objective Poor data and model setup Equipment control (part-load performance) Operating schedules Equipment sizing Ventilation Building envelope Internal 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 occupants Weather data Operating schedules Equipment operating performance Utility 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 7300m² An office building built in 1985 Concrete structure Double-pane windows with ext. shading, WWR 18% Each floor served by a CAV and a VAV systems with DOAS. Basement by a fan-coil unit Central plant – 2 chillers, 2 cooling towers, 2 CHW and 2 CW pumps Avg. LPD 14 W/m², avg. EPD 6.8 W/m²

Plan Views

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 building Explore 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