2008年
Forced convection heat transfer of subcooled liquid nitrogen in horizontal tube
AIP Conference Proceedings
- ,
- ,
- ,
- ,
- 巻
- 985
- 号
- 開始ページ
- 665
- 終了ページ
- 672
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1063/1.2908652
The knowledge of forced convection heat transfer of liquid hydrogen is important for the cooling design of a HTS superconducting magnet and a cold neutron moderator material. An experimental apparatus that could obtain forced flow without a pump was developed. As a first step of the study, the forced flow heat transfer of subcooled liquid nitrogen in a horizontal tube, instead of liquid hydrogen, was measured for the pressures ranging from 0.3 to 2.5 MPa. The inlet temperature was varied from 78 K to around its saturation temperature. The flow velocities were varied from 0.1 to 7 m/s. The heat transfer coefficients in the non-boiling region and the departure from nucleate boiling (DNB) heat fluxes were higher for higher flow velocity and higher subcooling. The measured values of Nu/Pr0.4 in the non-boiling region were proportional to Reynolds number (Re) to the power of 0.8. With a decrease in Re, Nu/Pr0.4 approached a constant value corresponding to that in a pool of liquid nitrogen. The correlation of DNB heat flux was derived that can describe the experimental data within ±15% difference. © 2008 American Institute of Physics.
- リンク情報
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- DOI
- https://doi.org/10.1063/1.2908652
- J-GLOBAL
- https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201002294867620806
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=42449100712&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=42449100712&origin=inward
- URL
- http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=42449100712&origin=inward
- ID情報
-
- DOI : 10.1063/1.2908652
- ISSN : 0094-243X
- eISSN : 1551-7616
- J-Global ID : 201002294867620806
- SCOPUS ID : 42449100712