Méthodologie pour la conception optimisée des réseaux de chaleur et de froid urbains intégrés

Abstract : This thesis presents a mathematical optimization model and a methodology for the optimal design of district heating and cooling networks. The various constraints in energy balances, costs and environmental criteria can be considered in order to propose structures of flexible and innovative networks.The model allows the consideration of heating (or cooling) networks at different temperature levels, as well as different production sites and heat demands. The network’s layout as well as the optimal architecture of the heat production systems are achieved by minimizing either the total exergy consumed or the total cost for the investment and operation of the systems.The developed mathematical model is formulated into a multi-period MINLP problem. The constraints of the model are presented in nested models. The first model M1 considers the multi-period aspect and includes the constraints related to the heat exchanges between production/demand streams with the network and a thermal storage. The second model, called M2, contains the entire model M1 as well as new constraints for sizing heat pumps with variable COP. The model M3 includes the model M2 as well as new constraints for the geographical layout of the networks and the consideration of electricity balance in the problem.A methodology is also presented making it possible, using the model M3, to deal with complex and realistic case studies. The methodology proposes a decomposition of the problem following three consecutive steps. This methodology is then used for the optimization of a new district, considering heat pumps, seasonal heat storage and PV production.
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Matthildi Apostolou. Méthodologie pour la conception optimisée des réseaux de chaleur et de froid urbains intégrés. Thermique [physics.class-ph]. PSL Research University, 2018. Français. ⟨NNT : 2018PSLEM072⟩. ⟨tel-02274400⟩

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