수평형 지중열교환기의 열전달 및 압력강하 특성에 관한 수치해석적 연구A Numerical Study on the Characteristics of Heat Transfer and Pressure Drop of Horizontal Ground Heat Exchangers
- Other Titles
- A Numerical Study on the Characteristics of Heat Transfer and Pressure Drop of Horizontal Ground Heat Exchangers
- Authors
- 공민석; 이경호
- Issue Date
- Oct-2019
- Publisher
- 한국기계기술학회
- Keywords
- Horizontal ground heat exchanger(수평형 지중열교환기); Heat transfer(열전달); Pressure drop(압력강하); Linear type(직선형); Wavy type(웨이비형); Horizontal slinky type(수평슬린키형)
- Citation
- 한국기계기술학회지, v.21, no.5, pp.916 - 922
- Journal Title
- 한국기계기술학회지
- Volume
- 21
- Number
- 5
- Start Page
- 916
- End Page
- 922
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/78536
- DOI
- 10.17958/ksmt.21.5.201910.916
- ISSN
- 1229-604X
- Abstract
- Heat transfer and pressure drop of horizontal heat exchangers with different configurations and installations numerically characterized. Three different heat exchangers were used and shaped as linear, wavy, and horizontal slinky, respectively. Installation depth was set from 0.5m to 3.0m and pipe spacing was ranged from 0.3m to 2.1m. The results showed that heat transfer rate and pressure drop were increased with the increase in the installation depth and the pipe spacing. The horizontal slinky heat exchanger carried more heat compared to others due to the greater effective heat transfer surface area per installation area. In terms of a ratio of heat transfer rate to pressure drop indicating the system efficiency, the linear heat exchanger performed better than others. On the other hand, the horizontal slinky heat exchanger was the most effective with respect to a ratio of heat transfer rate to installation cost.
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