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Optimising the performance of vertical aeration systems.

Author(s) : BARTLETT D., ARMITAGE D. M., HARRAL B.

Summary

Complex computational modelling of airflow from vertical aeration systems shows that if the aerator fan is set to blow rather than suck, then the volume of grain cooled is up to 20% greater and better cooling is obtained near the floor. Temperature, grain moisture content change and ventilating air pressure are measured in six commercial grain stores equipped with vertical ventilation systems. At each, the volume of air moved by the fan is up to 20% more when it is blowing than when it is sucking. A simple model, based on cooling front velocities and the pressure and flow characteristics obtained from the farm tests and trials with ducts, is developed to enable routine design of new systems in a short time. The simple model is compared with the complex model and good agreement demonstrated.

Details

  • Original title: Optimising the performance of vertical aeration systems.
  • Record ID : 2006-3016
  • Languages: English
  • Source: Advances in stored product protection. Proceedings of the 8th International Working Conference on Stored Product Protection.
  • Publication date: 2002/07/22

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