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    The effect of materials, process settings and screw geometry on energy consumption and melt temperature in single screw extrusion

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    applied_energy_oct_2016.pdf (583.6Kb)
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    Publication date
    2016-10-15
    Author
    Abeykoon, Chamil
    Kelly, Adrian L.
    Brown, Elaine C.
    Coates, Philip D.
    Keyword
    Polymer extrusion; Process monitoring; Energy consumption; Power factor; Energy e fficiency; Melt temperature fluctuations
    Rights
    (c) 2016 Elsevier Ltd. Reproduced in accordance with the publisher's selfarchiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
    Peer-Reviewed
    Yes
    
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    Abstract
    Polymer extrusion is an energy intensive production process and process energy e ciency has become a key concern in the current industry with the pressure of reducing the global carbon footprint. Here, knowledge of the pattern of energy usage and losses of each component in the plant is highly useful in the process energy optimization. Moreover, it is essential to maintain the melt quality while improving the energy e ciency in polymer processing. In this work, an investigation was made on the total energy consumption, drive motor energy consumption, power factor and the melt temperature profile across the die melt flow (as an indication of the melt thermal quality) of an industrial scale extruder with three di erent screw geometries, three polymer types and wide range of processing conditions (altogether 135 di erent processing situations were observed). This aims to widen the knowledge on process energy and thermal behaviors while exploring possible correlation/s between energy demand and melt quality (in terms of melt temperature fluctuations across the melt flow). The results showed that the level and fluctuations of the extruder’s power factor is particularly dependent upon the material being processed. Moreover, it seems that there is a relation between the level of energy demand of the heaters and the level of melt temperature fluctuations. While the extruder specific energy consumption decreases with increasing screw speed, specific energy consumption of the drive motor may have either increasing or decreasing behavior. Overall, this study provides new insights in a wide range on process energy demand and melt thermal quality in polymer extrusion. Moreover, further research is recommended to establish strong correlation/s between process energy consumption and melt thermal quality which should help to enhance process control and hence the product quality in single screw polymer extrusion.
    URI
    http://hdl.handle.net/10454/8772
    Version
    Accepted Manuscript
    Citation
    Abeykoon C, Kelly AL, Brown EC and Coates PD (2016) The Effect of Materials, Process Settings and Screw Geometry on Energy Consumption and Melt Temperature in Single Screw Extrusion. Applied Energy. 180: 880-894.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.apenergy.2016.07.014
    Type
    Article
    Collections
    Engineering and Informatics Publications

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