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| Research on Air Flow and Heat Transfer Characteristics of Hot Air Box in Air Cushion Drying System |
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| DOI：10.11980/j.issn.0254-508X.2012.09.006 |
| Key Words:air cushion pulp-sheet drier hot air box heat-transfer characteristics static pressure |
| Fund Project:南京工程学院青年资金项目（QKJA2011007）。 |
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| Abstract:This paper investigated some parameters affecting static pressure distribution and heat transfer coefficient of hot air box in air cushion drying system for pulp sheet production such as the shape and configuration of the holes, inlet velocity, gas temperature and percentage of opening. The results showed that the static pressure increases linearly with the flow direction but decrease with the percentage of opening. The round holes creat the highest surface heat transfer coefficient and the triangular holes creat the lowest. The optimal parameters of hot air box are the followings: inlet air temperature 75℃, inlet velocity 12 m/s, mixed arrangement of circular and triangle holes and the percentage of opening 7.42%. |
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