Freezing Characteristics of Ethylene-Glycol Solution on the Vertical Cooled Plate

Abstract

An experimental study has been performed to investigate the effect of a number of parameters on the characteristics of the frozen layer of solution which formed on the vertical cooled plate being immersed in the forced convection flow. A transparent lucite channel, which has a cross sectional area of 50 mm x 70 mm, and has a length of 500 mm, was utilized for the test section. One side of the test section was made of copper plate as a cooled surface. Ethylene-glycol solution was adopted as a testing liquid. Measurements and visual observations were extensively carried out under a variety of initial concentration, initial temperature, flow velocity of solution, and cooling temperature as parameters. It was found that the characteristics of the frozen layer at the onset and steady state were well classified by both Reynolds Number and the cooling temperature ratio. The correlation equation of the averaged frozen layer thickness was determined.