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Bibliografie tematiche / Low temperature heat valorisation

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Letteratura scientifica selezionata sul tema "Low temperature heat valorisation"

Autore: Grafiati

Pubblicato: 15 novembre 2022

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Tesi sul tema "Low temperature heat valorisation"

1

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.

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La technologie photovoltaïque (PV) est l’une des techniques de production d’électricité renouvelable la plus utilisée. La conversion photoélectrique génère cependant dans les cellules solaires une importante quantité de chaleur, entrainant une significative hausse de leur température de fonctionnement qui impacte fortement le rendement de conversion. Lorsque les panneaux opèrent dans des zones à fort ensoleillement et des conditions climatiques arides, les températures de fonctionnement atteignent des températures de 80°C à 100°C impactant également leur durabilité. Ainsi l’objectif des travau

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2

Segond, Guillaume. "Etudes des couplages thermohydrauliques en régime variable d'un système thermique avec stockage : application à la production d'eau chaude sanitaire à partir de la valorisation d'une source de chaleur basse température." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4722.

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Le travail présenté ici a pour objectifs d’étudier et d’optimiser les performances énergétiques d’un chauffe-eau thermodynamique couplé à un stockage par chaleur sensible. La ressource utilisée consiste en la récupération de chaleur sur l’air extrait d’un logement de type collectif. L’enjeu est de caractériser les conditions dans lesquelles le système est capable d’assurer les besoins avec des performances requises lorsque les conditions aux limites sont très fluctuantes. Sur le plan fonctionnel, le système doit être le plus simple possible du point de vue de sa configuration hydraulique et de

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3

Midtsjø, Alexander. "Power Production from Low Temperature Heat Sources." Thesis, Norwegian University of Science and Technology, Department of Energy and Process Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9902.

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Abstract (sommario):

<p>As part of the energy recovery part of the ROMA (Resource Optimization and recovery in the Materials industry) project, a laboratory prototype power production system is being built and completed in 2009. The laboratory prototype is based on a new technology for power production from low to medium temperature heat sources (the off gas from electrolysis cells in the aluminum industry) where CO2 is used as a working medium in a trans-critical Rankine cycle. The laboratory rig consists of the power cycle with a prototype expander as the core unit, an air loop to provide the heat, and an ethyle

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4

Pfaff, Michael. "Power Production from Low Temperature Heat Sources." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18330.

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Abstract (sommario):

SummaryThis Master Thesis is a conclusion on work done as part of the Resource Optimizationand recovery in the Materials industry project (Roma). This project is involved in thedevelopment of a new technology for power production from low temperature heat sourcesfor off gases from aluminum production cells. The technology is based on an transcriticalRankine cycle with CO2 as a working fluid, as the work recovery circuit. The center ofthe test facility is the expander, a prototype provided by Obrist Engineering . 81 testswere perfomed to investigate the behavoir of the expander cycle. Effect of

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5

Maalouf, Samer. "Étude et conception d'un système thermodynamique producteur du travail mécanique à partir d'une source chaude à 120°C." Thesis, Paris, ENMP, 2013. http://www.theses.fr/2013ENMP0074/document.

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Abstract (sommario):

Les fumées à basse température (<120-150 °C) sortant des procédés industriels pourraient être récupérées pour la production d'électricité et constituent un moyen efficace de réduction de la consommation d'énergie primaire et des émissions de dioxyde de carbone. Cependant, des barrières techniques tels que la faible efficacité de conversion, la nécessité d'une grande zone de transfert de chaleur, et la présence de substances chimiques corrosives liées à une forte teneur en humidité lors du fonctionnement en environnement sévère entravent leur application plus large. Cette thèse porte particu

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6

Dahn, Douglas Charles. "Low temperature specific heat of LixNbS2 intercalation compounds." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25563.

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Abstract (sommario):

This thesis describes a study of the low temperature specific heat of LiⅹNbS₂, where x is between 0 and 1. Samples were prepared by intercalating lithium into niobium disulfide in electrochemical cells. Structural data obtained by x-ray diffraction are presented. These, together with electrochemical measurements, show that staged phases exist for some values of x. The electronic specific heat of LiⅹNbS₂, is consistent with complete charge transfer from the intercalated lithium to the bands of the NbS2 host. The lattice specific heat also shows large changes as a function of x. A discussion of

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7

Farrokhpanah, Sonia. "Design of heat integrated low temperature distillation systems." Thesis, University of Manchester, 2009. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:228854.

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This work addresses the challenges in design of heat integrated low-temperature separation processes. A novel, systematic and robust methodology is developed, which contributes to the design practice of heat-integrated separation sequence and the refrigeration system in the context of low-temperature separation processes. Moreover, the methodology exploits the interactions between the separation and refrigeration systems systematically in an integrated design context. The synthesis and optimisation of heat-integrated separation processes is complex due to the large number of design options. In

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8

Deng, Guangnan. "Embedded heat speaders in low temperature cofired ceramic substrates." FIU Digital Commons, 2002. http://digitalcommons.fiu.edu/etd/2770.

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Abstract (sommario):

A new heat spreader that operates on a principle similar to heat pipes has been developed in Low Temperature Cofired Ceramic (LTCC) substrate. The heat spreader use sintered metal powder as the wick structure and water as the working fluid. Key topics related to the fabrication of embedded heat spreaders in LTCC substrate were studied. The conventional LTCC procedure has been improved to suit the requirement of heat spreader. A novel sintered porous silver powder has been developed to provide high capillary pressure and permeability for the wick structure. The maximum mass transport rate of th

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9

Ploskic, Adnan. "Technical solutions for low-temperature heat emission in buildings." Doctoral thesis, KTH, Strömnings- och klimatteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-133221.

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Abstract (sommario):

The European Union is planning to greatly decrease energy consumption during the coming decades. The ultimate goal is to create sustainable communities that are energy neutral. One way of achieving this challenging goal may be to use efficient hydronic (water-based) heating systems supported by heat pumps. The main objective of the research reported in this work was to improve the thermal performance of wall-mounted hydronic space heaters (radiators). By improving the thermal efficiency of the radiators, their operating temperatures can be lowered without decreasing their thermal outputs. This

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10

Toal, B. R. H. "The application of heat pumps to low temperature drying." Thesis, University of Ulster, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378669.

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