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Control optimization for chilled water thermal storage system under complicated time-of-use electricity rate schedule.

Author(s) : ZHOU J., DENG S., WEI G., et al.

Summary

The existence of a 1.4-million-gallon chilled water thermal storage tank greatly increases the operational flexibility of a campus-wide chilled water system under a four-price time-of-use electricity rate structure. A chiller start-stop optimization program was developed and implemented into the energy management and control system to determine the number of chillers that need to be brought on line and the start and stop times for each chiller every day, based on the prediction of the campus cooling load within the next 24 hours. With timely and accurate weather forecasting, the actual tank charging and discharging process closely matches the simulated process. The chiller plant's operating schedules are dynamically optimized to deliver required cooling capacity at lowest possible operating costs.

Details

  • Original title: Control optimization for chilled water thermal storage system under complicated time-of-use electricity rate schedule.
  • Record ID : 2006-2415
  • Languages: English
  • Source: ASHRAE Transactions. 2005 Winter Meeting. Volume 111, part 1 + CD-ROM.
  • Publication date: 2005

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