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Academic literature on the topic 'Procédé thermochimique à sorption de gaz'
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Dissertations / Theses on the topic "Procédé thermochimique à sorption de gaz"
Idir, Anis. "Procédé thermochimique de production/stockage de froid pour le refroidissement et la valorisation de chaleur basse température de panneaux photovoltaïques." Thesis, Perpignan, 2022. http://www.theses.fr/2022PERP0016.
Full textPhotovoltaic technology (PV) is one of the most widely used renewable electricity generation techniques. However, the photoelectric conversion process generates a large amount of heat in the solar cells, causing a significant increase in their operating temperature, which has a significant impact on the conversion efficiency. When the panels operate in areas with high solar irradiation and arid climatic conditions, the operating temperatures can reach 80°C to 100°C, which also impacts their durability. Thus, the objective of this thesis work is to improve the global solar energy conversion by limiting the operating temperature increase of PV modules through an active cooling in order to increase their electrical performance and to valorize in cold the thermal energy generated by a gas sorption thermal process. The aim is to demonstrate the technical feasibility of such a coupling and to evaluate its energy relevance. A gas sorption process exploiting a saturated solution, allowing to exploit the low temperature heat extracted from the PV panels and to valorize it in cold has thus been defined, designed, experimented and analyzed. A simulation tool has been developed to evaluate under realistic operating conditions the electrical performance a PV solar power plant and cooling performance of the thermally coupled sorption process. Such a coupling, which allows for electricity/cooling cogeneration, shows that it is possible to improve the overall energy gain by 10.5 % compared to that of standard PV panels, while resulting in a small overall energy loss of 1.3 % due to the additional conversion of heat to cold
Berthiaud, Julien. "Procédé à sorption solide/gaz pour le transport de chaleur et de froid à longue distance." Perpignan, 2007. http://www.theses.fr/2007PERP0821.
Full textNetworks of thermal energy transportation are classically based on sensible heat transport and thus they are limited to short distances. In order to realize a long-distance transport, thermochemical processes are investigated, and particularly an innovating system that couples two thermochemical dipoles. The advantages of thermochemical processes, the energetic performances and the operating cost of transport are presented. A comparison with sensible heat network is also done. An experimental study of this innovating system is also made in order to understand the main point of the system: autothermal reactor
Le, Pierrès Nolwenn. "Procédé solaire de production de froid basse température (-28°C) par sorption solide-gaz." Phd thesis, Université de Perpignan, 2005. http://tel.archives-ouvertes.fr/tel-00011253.
Full textStitou, Driss. "Transformation, Conversion, Stockage, Transport de l'énergie thermique par procédés thermochimiques et thermo-hydrauliques." Habilitation à diriger des recherches, Université de Perpignan, 2013. http://tel.archives-ouvertes.fr/tel-00841655.
Full textLahmidi, Hicham. "Stockage d'énergie solaire par procédé à sorption solide-gaz : application au chauffage et à la climatisation." Perpignan, 2005. http://www.theses.fr/2005PERP0577.
Full textThe increase of the use of solar energy closely depends on the development of efficient storage processes. In this objective, solid-gas sorption processes are promising because of their high storage capacity and their specific working mode. In this thesis, the integration of a sorption process based on the use of bromide strontium as the reactant and water as the refrigerant fluid is investigated. Combined with flat plate solar collectors and direct floor heating and cooling, it makes it possible to provide a heating but also a cooling storage function. Experimental tests demonstrate the good adequacy of this process to the level of temperature involved in the solar system. The simple model presented allows a fairly good global representation of the coupling phenomena between heat and mass transfer in the reactant. Further use of this model will allow the optimization of the design of the solid-gas reactor according to a power criterion
Michel, Benoît. "Procédé thermochimique pour le stockage intersaisonnier de l'énergie solaire : modélisation multi-échelles et expérimentation d'un prototype sous air humide." Phd thesis, Université de Perpignan, 2012. http://tel.archives-ouvertes.fr/tel-00818838.
Full textPubill, Aleix. "Procédé thermochimique de production de froid de forte puissance pour application mobile. Etude et caractérisation de la dynamique du système." Thesis, Perpignan, 2017. http://www.theses.fr/2017PERP0060.
Full textA better cold chain logistics understanding and control is a major safety issue in deep freezing processes within -20°C/-30°C. Self-cooling solutions based on thermochemical systems appear very suitable for rapid cooling of isothermal containers and its temperature regulation for several hours. Different process concepts and configurations are presented to tackle this problem. Through their dynamic nodal modeling, involving thermodynamic management of one or various reactors, an analysis of their behaviors is performed to evaluate their relevance. A selection of the best performing configurations leads us to an industrial pre-design.To undertake quality measures, a diagnosis approach for possible reactors malfunctions is developed. The methodology is based on a comparison of experimental responses between tested reactor and reference one under the same operating conditions. A database of simulated faulty behaviors will allow the detection and identification of possible malfunctions of reactors coming from the production line
Alizadeh, Arash. "Étude de sorption, de transfert de matière et chaleur pendant la polymérisation de l'éthylène en phase gaz dans un procédé en mode condensée." Phd thesis, Université Claude Bernard - Lyon I, 2014. http://tel.archives-ouvertes.fr/tel-01066378.
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