Critical Heat Flux During Natural Circulation Bolling of Saturated Liquid in Annulus With Uniformly Heated Outer Tube  

Oleh:

Monde, M. ; Mitsutake, Y.

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 122 no. 1 (Feb. 2000), page 74-79.
Topik: flux density; critical heat flux; natural circulation; liquid; uniformly heated; outer tube

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.1 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Critical heat flux has been measured during natural circulation boiling of water and R113 on a uniformly heated outer tube in a vertical annular tube. The experiment was carried out using water at atmospheric pressure and R113 at a pressure of 0.1 – 0.4 MPa for the annular gap width of S = 1.0 – 4.0 mm, the heated tube diameter of 9 – 17 mm, and the annular tube length of 100 – 1000 mm. The similarity of critical heat flux between annular configurations of either inner or outer heated tubes and a simple heated tube can be clearly elucidated based on the characteristics of the heated equivalent diameter. The critical heat flux measured for S = 1 mm can be predicted accurately by existing correlation for the annular tube and for clearance larger than S = 4 mm by existing correlation for the single tube. A new correlation for medium clearances from S = 1 to 4 mm has been developed to connect between both the existing correlations.

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