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1 Bulletin of the Polish Academy of Sciences. Technical Sciences

1 2000

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The Economics of the Optimisation of Hardwood Timber Drying Schedules (short communication)

Langrish T., Pordage L.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2000

Vol. 48, nr 3

333-337

The economic basis of the optimisation of timber drying schedules for hardwood timber has been studied, in which costs due to leakage, humidification, venting, fan power, heat loses from the shell, drying, and heating of the wood and air have been considered. Heat losses and other energy-related losses are a small component of the costs compared with the added value of the timber, so the use of higher temperatures to give higher drying rates dominates heat losses from the kiln shell. For the optimisation of hardwood timber drying schedules, an objective function that maximises the change in moisture content over a fixed time interval and hence the productivity is effectively one that also maximises the profit.