UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

SUBMIT
Already a GlobalSpec user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your GlobalSpec Experience

Finish!
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

- Trained on our vast library of engineering resources.

ASHRAE - 4759

Control Optimization for Chilled Water Thermal Storage System Under Complicated Time-of-Use Electricity Rate Schedule

active, Most Current
Organization: ASHRAE
Publication Date: 1 January 2005
Status: active
Page Count: 12
scope:

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. While significant operational savings can be expected, the complication in the rate structure also requires more sophisticated control over the charging and discharging processes of the thermal storage tank.

A chiller start-stop optimization program was developed and implemented into the energy management and control system (EMCS) 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 und 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

Document History

4759
January 1, 2005
Control Optimization for Chilled Water Thermal Storage System Under Complicated Time-of-Use Electricity Rate Schedule
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...

References

Advertisement