Toward an optimal control strategy for sweet pepper production 2. optimization of the yield pattern and energy efficiency

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

Sweet pepper production is characterized by large fluctuations in fruit yield in time. These fluctuations have a detrimental effect on the operational planning of labor at nursery level as well as on the efficiency of the supply chain. At the same time, the dependence of temperate zone greenhouse horticulture on fossil fuel needs to be reduced for long-term viability. Growers are aware of the fact that by modifying the indoor temperature, these fluctuations can be influenced, but the dynamics involved are complex and hard to master. Therefore, in practice the degree of control achieved is limited and sometimes obtained at the cost of a higher energy consumption. In this research, using the framework of optimal control theory and employing a sweet pepper production model, alternative temperature strategies were searched for with the aim of reducing production fluctuations and using a minimum amount of energy. The results obtained in this research indicate that fluctuations in sweet pepper production can be reduced using optimized temperature strategies, either by controlling production in one compartment or by controlling production in opposite phase in two compartments. By doing so, energy savings of 10% can be obtained. In contrast with standard horticultural practice, a striking feature of the optimized temperature trajectories is their considerable variation in time.
Original languageEnglish
Title of host publicationProceedings of the Third International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation (HORTIMODEL2006)
EditorsL.F.M. Marcelis, G. van Straten, C. Stanghellini, E. Heuvelink
Place of PublicationLeuven, Belgium
PublisherISHS
Pages391-398
Volume718
ISBN (Print)9789066056091
DOIs
Publication statusPublished - 2006
EventThe Third International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation (HORTIMODEL2006), Wageningen, The Netherlands -
Duration: 29 Oct 20062 Nov 2006

Conference

ConferenceThe Third International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation (HORTIMODEL2006), Wageningen, The Netherlands
Period29/10/062/11/06

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    van Henten, E. J., Buwalda, F., de Zwart, H. F., de Gelder, A., & Hemming, J. (2006). Toward an optimal control strategy for sweet pepper production 2. optimization of the yield pattern and energy efficiency. In L. F. M. Marcelis, G. van Straten, C. Stanghellini, & E. Heuvelink (Eds.), Proceedings of the Third International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation (HORTIMODEL2006) (Vol. 718, pp. 391-398). Leuven, Belgium: ISHS. https://doi.org/10.17660/ActaHortic.2006.718.45