Documents
All the documents offered by GRETh : patents, technical reports, thesis, publications, e-books, technical days presentations, technical manuals, etc.
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Oct- 2025 -
Summary : Two-phase thermosyphons allow the efficient and passive transfer of thermal energy from a hot source to a cold source. Their physical principle is based on the natural circulation induced by gravity without the need...
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Keywords : #écoulement diphasique, #Systèmes passifs, #Thermosiphons -
Summary : Heat accounts for 50% of energy consumption in Europe and is still largely produced from fossil fuels (75%). Thermal storage is a key component in the decarbonization of heat production, enabling...
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Keywords : #Design thermique, #Matériau à changement de phase, #Stockage de chaleur -
Summary : In the context of the energy transition, power electronics faces several challenges in order to meet the sharp increase in electrical power transmitted. Wide bandgap semiconductor components enable the conversion of higher...
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Keywords : #Caractérisation, #Diphasique, #électronique de puissance, #Packaging, #refroidissement -
Summary : The search for technological solutions aimed at minimizing the size of a device, known as intensification, is a classic objective of process engineering. In this thesis, the intensification possibilities offered by helical tubes are studied, both...
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Keywords : #CFD, #Design, #Échangeurs, #intensification, #optimisation, #simulation, #Transferts, #Tubes spiralés -
Summary : Carbon dioxide (CO₂, R744) is a promising alternative for refrigeration systems because it does not contribute to ozone depletion and has very little impact on global warming compared to...
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Keywords : #CO2, #Compresseur parallèle, #Dioxyde de carbone, #Ejecteur liquide, #Exergie, #fluides frigorigènes, #modélisation, #Optimisation énergétique, #Performance, #Système de réfrigération, #thermique -
Summary : Efficient heat exchanger design is crucial for cost, sustainability, and energy conservation. Due to its importance, the research interest in optimal HX design has increased across various industries, especially in the aerospace sector. Here, compact heat exchangers with…
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Summary: Since the industrial revolution, the evaporation of water has been the most common method for providing industrially usable energy. As of today, important primary energy sources for the evaporation are limited and globally unevenly distributed fossil fuels, whose combustion…
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Keywords : #Heat exchanger, #Latent, #PCM, #Thermal Energy Storage -
Jul- 2025 -
Résumé : En 2016, le GRETh publiait un état de l’art consacré à la Fabrication Additive appliquée aux échangeurs de chaleur [1]. Ce rapport, relativement pionnier en 2016, avait pour objectif d’explorer les potentialités offertes par ces technologies encore émergentes,…
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Keywords : #Additive manufacturing, #échangeurs de chaleur, #fabrication additive, #Heat exchangers, #impression 3D, #Industrie Du Futur, #Innovation Thermique, #R&D -
May- 2025 -
Cette newsletter de mai 2025 est articulée autour des rubriques suivantes : - Découvrez nos 6 nouveaux adhérents 2025 - Journées Techniques du GRETh 2025 - Appel à communication - Formation Echangeurs Thermiques - Nouveaux documents en ligne - Focus…
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Summary : The objective of this doctoral thesis is to present an innovative sinusoidal multifunctional heat exchanger/reactor that improves mixing and heat transfer based on chaotic advection. This new geometry is constructed by combining...
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Keywords : #Echangeur chaotique, #Heat transfer, #Sinus-Hélicoïdale