自然対流下における銅球面への着霜を伴う熱および物質移動

抄録

The boiling-cooling technology has been gaining attention in the fields of hardening of metals, nuclear reactors or superconducting coils. The boiling phenomena have high heat conductance because they involve latent heat transport due to gas-liquid phase transition. The purpose of this on going study is to elucidate the effects of frost layer covered surface on the boiling cooling transfer. The kind of coating material, the thickness and the surface inclination are important factors in these experiments.

We are currently investigating the boiling heat transfer characteristic in the copper ball of diameter 25mm.