- Author
- Park, C.
- Title
- Optimum Start/Stop Control Algorithm for Heating and Cooling Systems in Buildings.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- Department of Energy, Washington, DC Naval Civil Engineering Laboratory, Fort Hueneme, CA
- Report
- NBSIR 83-2720, June 1983,
- Distribution
- Available from National Technical Information Service
- Keywords
- buildings; heating; cooling; optimization; algorithms; control theory; computer programs
- Abstract
- When a building structure is occupied intermittently, energy savings can be realized from the optimal start-up and shut-down of the heating or cooling system. This strategy, known as optimum start/stop control, reduces energy consumption by delaying the start-up of the space conditioning system until the last moment and then initiating shut-down as early as possible, while maintaining a present level of comfort during the period of building occupancy. Based on the bang-bang control theory, a simple optimum start/stop control algorithm is developed for computerized control systems in buildings. The optimum start time is obtained by finding the intersection of cool-down and heat-up curves that are approximated by exponential fitting of the previous and current day's data.