Abstract
Freezing phenomena of carbon-nano-fiber (CNF) mixed water are investigated experimentally. The test fluid, whose CNF concentration is varied at 0.86-2.53wt%, is filled in a vessel and is frozen until the vessel is filled with ice. It is shown that a little of CNF is swept out at ice-water interface with freezing and that the swept-out CNF is piled up at the interface. Ice growth rate accelerates due to high thermal conductivity of CNF included in the ice. However, the piled up CNF prevents water supply to the ice-water interface, which results in suppression of ice growth. Analytical results obtained under quasi-steady state assumption give more understandings for freezing characteristics of CNF mixed water.
