ROLO E METODO DE TRANSFERENCIA DE CALOR

摘要

A rotary hollow shell cylindrical heat transfer roll for either chilling or heating a web has a device therein for controlling a heat transfer liquid to flow as a uniform thin layer stream in heat transfer relation to the inner cylindrical surface of the roll substantially throughout the width and limited to substantially the circumferential length of the area of the outer periphery of the roll over which the web travels. The direction of flow of the heat transfer stream is opposite to the direction of rotation of the roll.