HEATING SYSTEM FOR COMPRESSIVE SHRINKAGE MACHINES

摘要

A heating system (40, 41) for a mechanical compressive shrinkage apparatus(10) in which a continuously flowing liquid heat exchange medium is caused to flow in series through each of the components (11, 15, 25) required to be heated. Heat is transferred to the flowing medium in accordance with the temperature of one of the components to be heated, preferably the first in the series. Uniformity and constancy of both absolute and relative temperatures of the series-connected components is achieved. A mixture of water and propylene glycol alcohol is the preferred heat exchange medium whereby it allows operation at a lower pressure without the maintenance problems of a system using, for example, oil as the exchange medium.