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ISHS Acta Horticulturae 691: International Conference on Sustainable Greenhouse Systems - Greensys2004

HOW TO SIMULATE THERMAL AND FLUID DYNAMICAL PROCESSES IN CLOSED GREENHOUSES INCLUDING WATER INTERACTIONS BETWEEN PLANTS AND AIR

Authors:   P. Jochum, M. Buchholz
Keywords:   CFD, closed greenhouse, natural ventilation, simulation, Smile, thermal and pressure node model, water treatment
Abstract:
A new type of greenhouse is presented. It is a closed system using buoyancy as driving force for ventilation. The greenhouse is equipped with a tower in which the air is cooled or heated to maintain the inner temperatures in the required band and then conducted back to the plants. During the cooling process the water in the humid air condenses and can be reused. The subject of this article is the way of prediction of the thermal behaviour of closed greenhouses by means of dynamic simulations. Several model approaches are discussed. The simulation environment Smile is presented as a flexible program for this purpose.

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