[ { "key": "INPRA3S5", "version": 3, "library": { "type": "group", "id": 331787, "name": "Solar Energy Alger", "links": { "alternate": { "href": "https://www.zotero.org/groups/solar_energy_alger", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/331787/items/INPRA3S5", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/solar_energy_alger/items/INPRA3S5", "type": "text/html" } }, "meta": { "createdByUser": { "id": 2348020, "username": "david dada", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/david_dada", "type": "text/html" } } }, "creatorSummary": "Ferahta", "parsedDate": "2012-12-16", "numChildren": 0 }, "data": { "key": "INPRA3S5", "version": 3, "itemType": "book", "title": "Etude du transfert thermique dans la lame d'air d'un capteur solaire.", "creators": [ { "creatorType": "author", "firstName": "Fatima Zohra", "lastName": "Ferahta" } ], "abstractNote": "Le travail de cette thèse constitue une contribution à l'étude des capteurs solaires thermiques. Ainsi, nous cherchons à comprendre les mécanismes d'écoulement et de transfert en convection naturelle interne, en géométrie tridimensionnelle dans la lame d'air d'un capteur solaire dans le but de trouver la conception optimale qui permet un contrôle thermique adéquat et une performance énergétique.Une partie de cette thèse est donc consacrée à une simulation numérique basée sur la mise au point d'un modèle de la convection naturelle dans la lame d'air de forme parallélépipédique fermée contenant de l'air et inclinée d'un angle α. Les simulations ont été faites afin de déterminer les champs de température et de vitesse sous l'influence de la variation de l'épaisseur de la lame d'air, le flux de chaleur apporté à l'absorbeur et la présence d'obstacles dans la lame d'air. Ces simulations ont été effectuées avec et sans rayonnement dans la lame d'air. Le logiciel de calcul utilisé pour cette étude est le CFD fluent, basé sur la méthode des volumes finis Les résultats obtenus montrent l'influence de l'épaisseur de lame d'air sur le régime d'écoulement ; ce dernier peut être stationnaire stable ou instationnaire. Les valeurs du coefficient du transfert thermique ont été calculées pour tous les cas étudiés et une comparaison de l'écoulement avec et sans rayonnement a été faite.", "series": "", "seriesNumber": "", "volume": "", "numberOfVolumes": "", "edition": "", "date": "2012/12/16", "publisher": "Aix-Marseille", "place": "", "originalDate": "", "originalPublisher": "", "originalPlace": "", "format": "", "numPages": "", "ISBN": "", "DOI": "", "citationKey": "", "url": "http://www.theses.fr/2012AIXM4754", "accessDate": "2015-02-25T13:27:37Z", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "www.theses.fr", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [], "relations": {}, "dateAdded": "2015-02-26T08:13:03Z", "dateModified": "2015-02-26T08:13:03Z" } }, { "key": "IJQUI3AR", "version": 2, "library": { "type": "group", "id": 331787, "name": "Solar Energy Alger", "links": { "alternate": { "href": "https://www.zotero.org/groups/solar_energy_alger", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/331787/items/IJQUI3AR", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/solar_energy_alger/items/IJQUI3AR", "type": "text/html" } }, "meta": { "createdByUser": { "id": 2348020, "username": "david dada", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/david_dada", "type": "text/html" } } }, "creatorSummary": "Flamant et al.", "parsedDate": "1980", "numChildren": 0 }, "data": { "key": "IJQUI3AR", "version": 2, "itemType": "journalArticle", "title": "Experimental aspects of the thermochemical conversion of solar energy; Decarbonation of CaCO3", "creators": [ { "creatorType": "author", "firstName": "Gilles", "lastName": "Flamant" }, { "creatorType": "author", "firstName": "Daniel", "lastName": "Hernandez" }, { "creatorType": "author", "firstName": "Claude", "lastName": "Bonet" }, { "creatorType": "author", "firstName": "Jean-Pierre", "lastName": "Traverse" } ], "abstractNote": "High temperature endothermic reactions as well as heating of chemically inert materials were performed with small solar furnaces (power: 2 kW) in specially designed reactors. These reactors—fluid bed and rotary kiln—allow continuous processing at high temperature.\n\nThe treatment temperatures of fluidized inert materials (Silica, Chamotte, Ilmenite) may vary from 600° to 1300°C according to their nature and their radiative properties and also to the gas velocity, the particle diameters and the bed weight. Temperature homogeneity can be reached in a rather large volume. Thermal conversion efficiency can reach 0.35 with Ilmenite at 1250°C even though the experiment is conducted at a laboratory scale.\n\nA strong thermal gradient exists in materials treated in the rotary kiln, for example there can be temperature distribution from 1500°C at the opening of the furnace to 300°C at the bottom. Because of the cavity effect temperature is only slightly dependent on the thermal radiative properties of materials. Thermal conversion efficiency for this set-up is of the order of 0.1–0.3.\n\nThe study of decarbonation of CaCO3 showed that conversion of solar energy to thermochemical energy is a viable proposition: conversion yields of 0.1 are reached for total decomposition and over 0.15 for partial (75%) decomposition. It is seen from these laboratory scale experiments that great improvements can be made.", "publicationTitle": "Solar Energy", "publisher": "", "place": "", "date": "1980", "volume": "24", "issue": "4", "section": "", "partNumber": "", "partTitle": "", "pages": "385-395", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "Solar Energy", "DOI": "10.1016/0038-092X(80)90301-1", "citationKey": "", "url": "http://www.sciencedirect.com/science/article/pii/0038092X80903011", "accessDate": "2015-02-25T13:32:43Z", "PMID": "", "PMCID": "", "ISSN": "0038-092X", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "ScienceDirect", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [], "relations": {}, "dateAdded": "2015-02-26T08:12:49Z", "dateModified": "2015-02-26T08:12:49Z" } } ]