Simulation-based assessment of the energy savings benefits of integrated control in office buildings

TitleSimulation-based assessment of the energy savings benefits of integrated control in office buildings
Publication TypeJournal Article
Year of Publication2009
AuthorsShen, Eric, and Tianzhen Hong
JournalBuilding Simulation
Volume2
Issue4
Pagination239-251
Date Published2009
Type of ArticleResearch Article
Keywordsdaylighting, energy conservation, energy consumption, energy efficiency, energy management systems, lighting control systems
Abstract

The purpose of this study is to use existing simulation tools to quantify the energy savings benefits of integrated control in office buildings. An EnergyPlus medium office benchmark simulation model (V1.0_3.0) developed by the Department of Energy (DOE) was used as a baseline model for this study. The baseline model was modified to examine the energy savings benefits of three possible control strategies compared to a benchmark case across 16 DOE climate zones. Two controllable subsystems were examined: (1) dimming of electric lighting, and (2) controllable window transmission. Simulation cases were run in EnergyPlus V3.0.0 for building window-to-wall ratios (WWR) of 33% and 66%. All three strategies employed electric lighting dimming resulting in lighting energy savings in building perimeter zones ranging from 64% to 84%. Integrated control of electric lighting and window transmission resulted in heating, ventilation, and air conditioning (HVAC) energy savings ranging from –1% to 40%. Control of electric lighting and window transmission with HVAC integration (seasonal schedule of window transmission control) resulted in HVAC energy
savings ranging from 3% to 43%. HVAC energy savings decreased moving from warm climates to cold climates and increased when moving from humid, to dry, to marine climates.

DOI10.1007/s12273-009-9126-z