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2021 Vol.15, Issue 5 Preview Page

Research Article

Development of Control Algorithm for Cooling Tower Low-Approach Temperature

냉각탑의 어프로치 온도 감소를 위한 제어알고리즘 개발

Ju-Wan Ha1
,
Yu-Jin Kim1
,
Hwan-Yong Kim2
,
Young-Hak Song2*
하 주완1
,
김 유진1
,
김 환용2
,
송 영학2*
1Graduate Student, Graduate School, Department of Architectural Engineering, Gyeongsang National University, Jinju, Korea
2Associate Professor, Department of Architectural Engineering, ERI, Gyeongsang National University, Jinju, Korea
1경상대학교 대학원 건축공학과 대학원과정
2경상대학교 건축공학과 부교수
*Corresponding Author
30 October 2021. pp. 431-442
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Abstract

The chiller efficiency is an important factor for improving the efficiency of the central chilled water system. A low-condenser water temperature is required for the low cooling tower leaving water temperature, which affects the chiller efficiency. Various studies have been conducted to produce low-condenser water temperature, but an additional review is needed on a method to lower the approach temperature. This study developed a control algorithm for cooling tower low-approach temperature. The approach temperature changes within the same load, ambient conditions according to the liquid-to-gas ratio (LGR), which is the operating condition of the cooling tower system. It found that the lower the LGR, the lower the approach temperature could be secured. As the approach temperature is lowered, it is expected that the efficiency of the chiller and cooling water pump will be improved.

Keywords
Cooling tower control
Approach temperature
Low-condenser water temperature
Cooling tower leaving water temperature
Algorithm
키워드
냉각탑 제어
어프로치온도
저온 냉각수
냉각탑 출구온도
알고리즘
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Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 15
  • No :5
  • Pages :431-442
  • Received Date : 2021-07-20
  • Revised Date : 2021-09-01
  • Accepted Date : 2021-09-02
  • DOI :https://doi.org/10.22696/jkiaebs.20210037
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