Soumei Babaa,*, Nobuo Ohtania, Osamu Kawanamib, Koichi Inouec, Haruhiko Ohtaa
Frontiers in Heat and Mass Transfer, Vol.3, No.4, pp. 1-8, 2012, DOI:10.5098/hmt.v3.4.3002
Abstract Effects of tube orientation on flow boiling heat transfer coefficients were investigated for FC72 flowing in single mini-tubes with tube diameters of
0.13 and 0.51 mm to define boundaries on a dominant force regime map. For the tube diameter of 0.51 mm, when mass velocity and vapor quality
was varied, heat transfer coefficients were influenced by tube orientation at Froude number Fr < 4, while the effect of tube orientation on heat
transfer coefficients disappears at Fr > 4. The results indicated that the boundary between the body force dominated and the inertia dominated
regimes was given by Fr ≈… More >
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