Abstract
Experimental and analytical studies for freezing phenomena of ethylene glycol solution around a vertical cooled polyvinyl-chloride cylinder have been performed. It is found that the crystal ice formed around the vertical cylinder is removed from the cylinder surface due to a buoyancy force acting on the crystal ice. The crystal ice slides along the cylinder surface due to buoyancy force and grows in the shape of a tube by joining with the neighboring ice. It is shown that the onset of ice removal condition is related to the heat flux ratio, ‘from the cylinder surface into the cylinder’ to ‘from the cylinder surface into the solution’. The ice removal occurs more easily for short cylinders than for long ones.
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