판형열교환기 핀 홀의 위치 및 유속에 따른 누수율 및 내부 유동 특성에 관한 실험적 연구Experimental Study on Leak Flow Rate and Inner Flow Characteristics of Plate Heat Exchangers with Pin-hole Location and Mass Flux
- Other Titles
- Experimental Study on Leak Flow Rate and Inner Flow Characteristics of Plate Heat Exchangers with Pin-hole Location and Mass Flux
- Authors
- 송강섭; 백창현; 김성우; 김용찬
- Issue Date
- 2016
- Publisher
- 대한설비공학회
- Keywords
- Plate heat exchangers(판형열교환기); Leak rate(누수율); Flow characteristics(유동특성); Downflow(하향 유동); Upflow(상향 유동); Re(레이놀즈 수)
- Citation
- 설비공학 논문집, v.28, no.5, pp.171 - 177
- Indexed
- KCI
- Journal Title
- 설비공학 논문집
- Volume
- 28
- Number
- 5
- Start Page
- 171
- End Page
- 177
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/90841
- DOI
- 10.6110/KJACR.2016.28.5.171
- ISSN
- 1229-6422
- Abstract
- Plate heat exchangers have been widely used in various fields because of their high heat transfer coefficients, small area of installation, and ease of maintenance compared to other heat exchangers. However, when plate heat exchanger is used for a long time, leak can occur due to inner crack. Therefore, it is important to understand the inner flow characteristics in plate heat exchangers. In this study, the inner flow characteristics and flow rate of plate heat exchanger were evaluated using various flow directions, pin-hole sizes, and Reynolds numbers. In downflow, initially most water flowed to the opposite of the inlet due to distribution region. Then it gradually had a uniform distribution due to chevron configuration. In upflow, it had a uniform flow consistently due to the dominant gravity effect. As the Reynolds number increased, the leak rate was decreased due to the inertia effect regardless of the flow direction.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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