Ultra High Critical Heat Flux During Forced Flow Boilling Heat Transfer With An Impinging Jet  

Oleh:

Monde, Masanori ; Mitsutake, Yuichi

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 125 no. 6 (Dec. 2003), page 1038-1045.
Topik: uniform wall heat flux; ultra high; critical heat flux; boiling heat transfer; impinging jet

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.7 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

An ultra high critical heat flux (CHF) was attempted using a highly subcooled liquid jet impinging on a small rectangular heated surface of length 5 ~ 10 mm and width 4 mm. Experiments were carried out at jet velocities of 5 ~ 60 m/s, a jet temperature of 20° C and system pressures of 0.1 ~ 1.3 MPa. The degree of subcooling was varied from 80 to 170 K with increasing system pressure. The general correlation for CHF is shown to be applicable for such a small heated surface under a certain range of conditions. The maximum CHF achieved in these experiments was 211.9 MW / m(2), recorded at system pressure of 0.7 MPa, jet velocity of 35 m / s and jet subcooling of 151 K, and corresponds to 48 % of the theoretical maximum heat flux proposed by Gambill and Lienhard.

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