Direct chiller power limiting for peak demand limiting control in buildings—Methodology and on-site validation

Kui Shan, Shengwei Wang, Rui Tang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)

Abstract

Large electricity consumers are often charged of a high price for their peak demand for the purpose of reducing the capacity and cost, as well as the operation reliability of electricity transmission facilities. As a result, even one spike in the monthly demand profile would result in a significant increase in electricity bill. Peak demand limiting techniques provide an effective and efficient means to reduce such cost. For instance, the methods to utilize cooling/heating stored in building thermal mass by resetting space air temperature set-point have been proofed effective in many studies. This study proposes a direct chiller power limiting control strategy for peak demand limiting control in buildings, particularly during the period of chiller starting when the peak demand occurs mostly. Validation tests were conducted on-site in a super high rise building and on a dynamic simulation platform. Results showed the strategy was effective in reducing the peak demand during chiller starting periods.

Original languageEnglish
Pages (from-to)333-343
Number of pages11
JournalAutomation in Construction
Volume85
DOIs
Publication statusPublished - 1 Jan 2018

Keywords

  • Building thermal mass
  • Chiller power limiting
  • Demand response
  • Model predictive control
  • Peak demand limiting

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Civil and Structural Engineering
  • Building and Construction

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