Pseudo bond graph tunnel greenhouse model with accurate longwave/shortwave radiations model

M. Abbes, A. Farhat and A. Mami

Mathematical and Computer Modelling of Dynamical Systems, 2019, vol. 25, issue 1, 90-114

Abstract: This research work is focused on the construction of an accurate longwave/shortwave radiation model on a tunnel greenhouse pseudo-bond graph model, widely used in Tunisia. This model includes sun position, useful incoming solar radiation model, sky longwave radiation model, inside longwave and shortwave radiation model. The key idea is to use bond graphs allowing a lumped modelling approach which is suitable for control applications. Furthermore, an evaluation of some longwave radiative model components was made, noting that these components are particularly sensitive regarding to the thermal behaviour of the model.Experimental tunnel greenhouse data are used as validation elements for the present model with globally good results. A comparative study was also performed between the present model and a previous bond graph model containing a simplistic radiative model. Practical simulation results show a clear improvement compared with the previous model.

Date: 2019
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DOI: 10.1080/13873954.2018.1555172

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