A mathematical approach for the optimal planning of drying operation
Lumber drying is an important stage in sawmills since lumber charateristics required by the market are achieved through this operation. Generally, it is a batch process that is carried out in drying kilns that operate in parallel out of phase. This work presents a mixed integer linear programming mo...
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| Autores principales: | , , |
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| Formato: | Objeto de conferencia |
| Lenguaje: | Inglés |
| Publicado: |
2020
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/116730 http://49jaiio.sadio.org.ar/pdfs/siiio/SIIIO-05.pdf |
| Aporte de: |
| Sumario: | Lumber drying is an important stage in sawmills since lumber charateristics required by the market are achieved through this operation. Generally, it is a batch process that is carried out in drying kilns that operate in parallel out of phase. This work presents a mixed integer linear programming model (MILP) for the optimal planning of this process stage. The model determines how board packages are processed in dryers and the start and end times of each drying cycle in each kiln. This approach combines concepts of both multidimensional bin packing ‒to plan the load of kilns‒ and parallel machine scheduling ‒to sequence drying cycles. The model is tested with different objective functions that represent different work criteria related to sawmills. |
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