| Title |
A Case Study for Identifying Energy Savings Potential by Optimizing HVAC System Operation through EMCS |
| Abstract |
This paper summarizes the results of energy management retrofit study in a large building, Washington, DC which was evaluated on a case study basis to determine the extent of potential benefits from controls retrofit. Two approaches were used for this purpose:field energy monitoring and computer simulation. DOE-2.1D simulation models were developed and validated based on field test data, and the simulation techniques were used for analysis on benefits from controls retrofit. The simulation demonstrates that time-of-day control saves 1,624MWh(about 26% energy reduction) and 582(14.2% operating cost savings) over standard temperature control throughout the year. Most of the savings are achieved during the unoccupied hours. The largest savings are obtained during Sundays and the least savings are obtained during Mondays which are following after the setback during weekends. From an electrical peak demand perspective, standard temperature control demonstrates better performance than does time-of-day control. |