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

Young Sub Kim; Kang Soo Kim

doi:10.1016/j.buildenv.2005.09.001

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

Young Sub Kim, Kang Soo Kim

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	507-515
Number of pages	9
Journal	Building and Environment
Volume	42
Issue number	1
DOIs	https://doi.org/10.1016/j.buildenv.2005.09.001
Publication status	Published - 2007 Jan

Keywords

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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10.1016/j.buildenv.2005.09.001

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abstract = "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.",

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AB - 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.

KW - Correlation method

KW - Life cycle cost analysis

KW - Part-load ratio

KW - Regression equation

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EP - 515

JO - Building and Environment

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

Abstract

Keywords

ASJC Scopus subject areas

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