Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Characteristics of Temperature Control by Hot-gas Bypass Flow Rate on Industrial Water Cooler

핫가스 바이패스 유량에 따른 산업용 냉각기의 온도제어 특성

  • Published : 2009.11.30
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Abstract

The paper presents the performance characteristics for a cooling system using EEV. The water cooler was used to reduce thermal deformation and contraction due to high speed of machine tools and the EEV was used for capacity control for water cooler. The apparatus was designed for hot-gas bypass system which a hot-gas can flows from outlet of compressor to the inlet of evaporator. This experiment is the intermediary study for precise temperature control through PID control. The results show that the evaporator pressure increased and refrigeration capacity decreased as the EEV opening step of hot-gas bypass increased. These results can be used as basic data for the design of effective water cooler.

본 논문은 EEV를 이용한 냉각시스템의 성능특성에 관한 논문이다. 산업용냉각기는 고속으로 운전하는 공작기기의 열 변형을 줄이기 위해 사용되었으며, EEV는 냉각기의 용량조절을 위해 사용되었다. 본 장치는 압축기 출구에서 나온 핫가스를 증발기 입구로 보내는 핫가스 바이패스 시스템을 위해 설계되었다. 본 실험은 PID제어를 통한 고정도 온도제어 연구의 중간결과물이다. 실험의 결과로 핫가스 바이패스의 EEV스텝 조절을 통하여 증발압력의 상승과 냉동능력의 감소를 알 수 있었다. 본 실험의 결과를 통하여 효율적인 냉각기의 설계에 있어 기초 자료로 이용할 예정이다.

Keywords

References

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