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ISSN Online: 2377-424X

ISBN Print: 0-89116-130-9

International Heat Transfer Conference 6
August, 7-11, 1978, Toronto, Canada

BLOCKAGE OF FLOW RESULTING FROM FREEZING OF LIQUID INTRODUCED INTO CIRCULAR TUBES LOCATED IN LOW-TEMPERATURE ENVIRONMENTS

Get access (open in a dialog) DOI: 10.1615/IHTC6.530
pages 37-42

Abstract

This paper presents an approach to dealing with the problem of establishing liquid flow in a circular tube, without blockage due to freezing, when the tube is located in an environment at a constant temperature well below the freezing temperature of the liquid. The approach utilizes freezing curves drawn on a coordinate system having a dimensionless freezing variable on the ordinate and a dimensionless axial position variable on the abscissa. The curves, representing different values of the overall heat transfer coefficient between the inside of the tube wall and the environment, divide the field into freezing and non-freezing regions. An analytically-determined curve, indicative of the nature of the desired empirically-determined curves, is presented. Experimental data have been obtained for water as the liquid introduced into high density polyethylene tubes. The resulting freezing curve is consistent,-in trend, with the analytical curve. Examples of application of the analytical curve, and the more appropriate experimentally-determined curve, are included.