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Increasing heat transfer in the drying cylinder

ThermoBars increase the condensate film turbulence in the drying cylinder. The heat transfer in the drying cylinder is improved and drying performance increased.

Starting at a production speed of about 500 m/min, the condensate forms a laminar ring in the drying cylinder, which reduces the relative heat transfer of the steam to the interior wall of the cylinder. ThermoBars break up this ring by creating turbulence and thus increasing the heat transfer. Drying performance can also be substantially increased. In addition, ThermoBars ensure a consistent condensate thickness over the width, improving moisture cross profile.

ThermoBars are installed in drying cylinders to improve heat transfer. Mini-ThermoBars for the edge area of the cylinder prevent moist streaks at the edge of the paper web.