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Experimental measurement of temperature profiles of molten flowing polymers in a heat exchanger
Author(s) -
Forsyth T. H.,
Murphy N. F.
Publication year - 1969
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760090104
Subject(s) - materials science , isothermal process , thermocouple , heat exchanger , polystyrene , polypropylene , polyethylene , polymer , composite material , thermodynamics , flow (mathematics) , mechanics , physics
Molten polymer was pumped through an isothermal‐wall heat exchanger and the temperature at four radial positions was measured with a hypodermic thermocouple. Temperature profiles were obtained for heating, cooling, and isothermal flow of polyethylene, polystyrene and polypropylene at Graetz numbers from 1.7 to 9.2. The results show large viscous heating effects, particularly for cooling.