Paper Machine Drying hood

A closed dryer hood in poor condition will not only create problems for the production but can also have negative impact on the building constructions, due to humidity loads being spread uncontrolled.

A closed hood designed for a high humidity dew point will allow the dimensioning of the dryer section exhaust and supply air systems at reduced air flows, meaning less investment costs into these equipment, more suitable applications especially when talking about space limited rebuild projects and more efficient overall heat recovery solutions.

The closed hood design is user friendly, with attention paid to the overall accessibility and possible service needs in the paper machine. Special lifting door arrangements, easily dismantled roof panels and wall service doors are included, taking into account any specific customer need.

Operation at high humidity is ensured by a design where any risk for cold bridges causing condensation has been eliminated. The design including proper sealing materials will also cut off any possible air flows from the upper part of the closed hood into the machine hall.

A tight overall construction also gives the paper maker an excellent tool to control the so called 0-level of the dryer section and thus minimize any disturbing air flows either coming from the hood or going into the hood, including the basement area under the machine.