This paper is concerned with heat transfer from a heated surface with uniform heat flux to a two-dimensional water jet. It describes quantitatively the results on the effect of pure forced convection on heat transfer with boiling in a flow of subcooled water. Experiments were carried out in two flow fields of an impinging water jet, at the stagnation point and in the parallel flow zone. Approximation of the superposition, that is, the total heat flux at forced convective boiling consisting of pool boiling heat flux and pure convective heat flux, held fairly good up to the burn-out heat flux region.
The present paper is concerned with a high subcooling water jet boiling system at the stagnation point. The purpose of the investigation is to obtain a high heat flux and to reveal the high heat flux mechanism. Most of the discussion in this paper is based on experimental results and concerns the effect of subcooling, jet velocity, and stagnation pressure on critical heat flux and nucleate boiling in the transient region. The entire range of the boiling curve is divided into three heat transfer regions which may be hypothesized to exist in nucleate boiling.
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