Modelling the Evaporation Rate in an Impingement Jet Dryer with Multiple Nozzles
Impinging jets are often used in industry to dry, cool, or heat items. In this work, a two-dimensional Computational Fluid Dynamics model is created to model an impingement jet dryer with a total of 9 pairs of nozzles that dries sheets of metal. Different methods to model the evaporation rate are st...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/5784627 |
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| author | Anna-Lena Ljung L. Robin Andersson Anders G. Andersson T. Staffan Lundström Mats Eriksson |
| author_facet | Anna-Lena Ljung L. Robin Andersson Anders G. Andersson T. Staffan Lundström Mats Eriksson |
| author_sort | Anna-Lena Ljung |
| collection | DOAJ |
| description | Impinging jets are often used in industry to dry, cool, or heat items. In this work, a two-dimensional Computational Fluid Dynamics model is created to model an impingement jet dryer with a total of 9 pairs of nozzles that dries sheets of metal. Different methods to model the evaporation rate are studied, as well as the influence of recirculating the outlet air. For the studied conditions, the simulations show that the difference in evaporation rate between single- and two-component treatment of moist air is only around 5%, hence indicating that drying can be predicted with a simplified model where vapor is included as a nonreacting scalar. Furthermore, the humidity of the inlet air, as determined from the degree of recirculating outlet air, has a strong effect on the water evaporation rate. Results show that the metal sheet is dry at the exit if 85% of the air is recirculated, while approximately only 60% of the water has evaporated at a recirculation of 92,5%. |
| format | Article |
| id | doaj-art-38af8b41d1d54c93be16bb992edd9dee |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-38af8b41d1d54c93be16bb992edd9dee2025-02-03T01:06:21ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782017-01-01201710.1155/2017/57846275784627Modelling the Evaporation Rate in an Impingement Jet Dryer with Multiple NozzlesAnna-Lena Ljung0L. Robin Andersson1Anders G. Andersson2T. Staffan Lundström3Mats Eriksson4Division of Fluid and Experimental Mechanics, Department of Engineering Science and Mathematics, Luleå University of Technology, 971 87 Luleå, SwedenDivision of Fluid and Experimental Mechanics, Department of Engineering Science and Mathematics, Luleå University of Technology, 971 87 Luleå, SwedenDivision of Fluid and Experimental Mechanics, Department of Engineering Science and Mathematics, Luleå University of Technology, 971 87 Luleå, SwedenDivision of Fluid and Experimental Mechanics, Department of Engineering Science and Mathematics, Luleå University of Technology, 971 87 Luleå, SwedenRelitor Engineering AB, Företagsvägen 9, 954 33 Gammelstad, SwedenImpinging jets are often used in industry to dry, cool, or heat items. In this work, a two-dimensional Computational Fluid Dynamics model is created to model an impingement jet dryer with a total of 9 pairs of nozzles that dries sheets of metal. Different methods to model the evaporation rate are studied, as well as the influence of recirculating the outlet air. For the studied conditions, the simulations show that the difference in evaporation rate between single- and two-component treatment of moist air is only around 5%, hence indicating that drying can be predicted with a simplified model where vapor is included as a nonreacting scalar. Furthermore, the humidity of the inlet air, as determined from the degree of recirculating outlet air, has a strong effect on the water evaporation rate. Results show that the metal sheet is dry at the exit if 85% of the air is recirculated, while approximately only 60% of the water has evaporated at a recirculation of 92,5%.http://dx.doi.org/10.1155/2017/5784627 |
| spellingShingle | Anna-Lena Ljung L. Robin Andersson Anders G. Andersson T. Staffan Lundström Mats Eriksson Modelling the Evaporation Rate in an Impingement Jet Dryer with Multiple Nozzles International Journal of Chemical Engineering |
| title | Modelling the Evaporation Rate in an Impingement Jet Dryer with Multiple Nozzles |
| title_full | Modelling the Evaporation Rate in an Impingement Jet Dryer with Multiple Nozzles |
| title_fullStr | Modelling the Evaporation Rate in an Impingement Jet Dryer with Multiple Nozzles |
| title_full_unstemmed | Modelling the Evaporation Rate in an Impingement Jet Dryer with Multiple Nozzles |
| title_short | Modelling the Evaporation Rate in an Impingement Jet Dryer with Multiple Nozzles |
| title_sort | modelling the evaporation rate in an impingement jet dryer with multiple nozzles |
| url | http://dx.doi.org/10.1155/2017/5784627 |
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