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Ventilation des pommes de terre dans des caisses.

Ventilation of potatoes in storage boxes.

Auteurs : HOFFMANN T., MALY P., FÜRLL C.

Type d'article : Article

Résumé

If foreign material cannot be avoided when potatoes are taken into storage, then at least uniform distribution of the foreign material is to be targeted. By filling the boxes on the harvesting machine, foreign material is distributed uniformly and as a result the boxes are filled in a manner favourable for ventilation. In agreement with the measurements of the flow profile, the pictures taken with the infrared thermography camera show that if foreign material is distributed unevenly, the middle of the box is hardly ventilated at all. As the measurements on the storage box with the measuring hopper have shown, the air velocity in free convection ventilation rarely reaches values above 0.01 m/s. During the long-term storage, the tubers were on average 0.26°C cooler than the air in the storage hall. This low temperature difference leads to an airflow rate of about 35 m3/t.h and is sufficient for storing the tubers. The tuber temperature that is on average about 0.3°C lower in the case of direct box filling than in indirect filling does not lead to any difference in the quality of the potatoes. A higher foreign material component would presumably cause greater temperature differences.

Détails

  • Titre original : Ventilation of potatoes in storage boxes.
  • Identifiant de la fiche : 2008-2567
  • Langues : Anglais
  • Source : Agric. Eng. Int., CIGR E-J. - vol. 9 - n. FP 06 014
  • Date d'édition : 05/2007

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