Simplified energy prediction method accounting for part-load performance of chiller

Young Sub Kim, Kang Soo Kim

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


This paper presents a simplified correlation method accounting for part-load performance of a chiller. First of all, parametric analysis was to present the influence of each input variable on partial loads at specific time and chiller capacity. Five variables, which were found to correlate well, were selected as inputs on the regression equations. A case study was carried out to test the applicability of this method with a 20 story office building in Seoul. The results of this method show good agreement with DOE-2 and measured data. When three alternatives were assumed for a cooling plant system, the differences of life cycle costs calculated for DOE-2 and this method were within 2%. Accordingly, it is believed that this simplified correlation method can be useful for determining the most economic alternative in the initial design stage.

Original languageEnglish
Pages (from-to)507-515
Number of pages9
JournalBuilding and Environment
Issue number1
Publication statusPublished - 2007 Jan


  • Correlation method
  • Life cycle cost analysis
  • Part-load ratio
  • Regression equation

ASJC Scopus subject areas

  • Environmental Engineering
  • Civil and Structural Engineering
  • Geography, Planning and Development
  • Building and Construction


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