S0805-1-2 Studies on frost layer growth and its structure on cooling surface

Abstract

The frost surface plays an important role as an interface of heat and mass transfer between air-flow and ice-air composite solid layer. The water vapor in the humid atmosphere reaches the cooling surface and changes the supercooled water droplet. And then it freezes and the frost grows by sublimation. The frost layer surface consists of ice and air. It is rough and any specific definition of the frost layer thickness is not found. The frost layer thickness is usually measured by observation. But measured values may be different by observers. So this study proposes how to measure the frost layer height by using a Laser Focus Displacement Meter and reports about frost layer growth and its structure.