Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 303684
Title Climate control of natural ventilated pig houses
Author(s) Bontsema, J.; Straten, G. van; Salomons, L.; Klooster, C.E. van 't
Source In: II IFAC/ISHS Workshop : Mathematical & Control Applications in Agriculture & Horticulture / Day, W., Young, P.C., - p. 81 - 88.
Department(s) Agricultural Engineering and Physics
Institute of Agricultural and Environmental Engineering
Publication type Contribution in proceedings
Publication year 1996
Abstract Ventilation in pig houses is important for maintaining a good climate for the welfare of animals and humans and for an optimal production. Mechanical ventilation has a good performance, since the ventilation rate can easily be controlled, but it is energy demanding, whereas natural ventilation is cheap but due to large variations in the outdoor conditions it can cause unwanted variations in the ventilation rate. To improve the performance of natural ventilation a good control scheme is necessary. Since in this case controller tuning is difficult in the practical situation, due to all influences on the climate, a dynamic model is discussed, so that the tuning can be done off-line, which means that the tuning of the controllers is done in simulations. The model of the indoor climate is validated by measurements of the temperature of the pig house. The performance of the control scheme, in which standard PID controllers are used in a cascade configuration, is shown by simulations.
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