The cylinder dryer operates in an interactive relationship to surrounding area and hall ambient. In most cases the evaporated water is extracted with a simple steam extraction hood. The air extraction speed underneath the hood has to be chosen relatively high in order to avoid steam escaping to the surrounding area. Also it has to be taken care that the relative air humidity does not reach the saturation limit so that condensation of steam within the cylinder dryer or in the hood area would cause drop spots on the fabric. In an open installation of a cylinder dryer energy loss is caused by radiation and convection. The side plates of cylinders, non covered cylinder surfaces and non isolated piping emit heat to the surrounding area.
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