Дисертації з теми "Serre solari"
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Aumporn, Orawan. "Contribution à l'étude des performances d'un séchoir serre avec stockage de chaleur dans des matériaux à changement de phase." Thesis, Perpignan, 2017. http://www.theses.fr/2017PERP0032/document.
Повний текст джерелаThis work is about a numerical study of the thermal behavior of a solar greenhouse dryer and a heat storage unit in phase change materials (PCMs). The heat storage unit containing of PCMs (paraffin) is disposed between a metal plate and a concrete layer and placed under the floor of the greenhouse. The air drying flows along the greenhouse by forced convection and the products placed on the dryer's rack is bananas (Bananas Musa ABB CV Kluai "Namwa"). The heat transfer equations in the greenhouse are based on the nodal method and deduced from a thermal balance on the different components of the solar greenhouse dryer. The heat transfers in the PCMs and the concrete slab are described by the enthalpy method and the conduction equation, respectively. The banana drying kinetic is described by the model modified of Oswin. Transfer equations are solved using an implicit finite difference method associated to Gauss and Thomas algorithms. We analyze the effects of the air drying volumetric flow rate and the solar irradiance on the temperature distribution of the greenhouse dryer and the heat storage unit, the drying time, the solar greenhouse dryer and heat storage unit efficiencies. This modeling is complemented by simulations of the solar greenhouse dryer with the heat storage unit using the day type and the meteorological data of Nakorn Pathom (Thailand) and by an economic analysis. The results show that the heat storage unit provides the reduction of the drying time and increases the thermal performances of the solar greenhouse dryer and the heat storage unit
Franceschetti, Paolo <1981>. "Energie rinnovabili e microgenerazione distribuita : serra solare ad evaporazione." Doctoral thesis, Università Ca' Foscari Venezia, 2013. http://hdl.handle.net/10579/4658.
Повний текст джерелаIn an International context of research focused on the development of new technologies based on energy supplied by renewable sources, the development of micro-water treatment plants is of increasing interesting. The current study fits into this perspective with the aim to provide an innovative tool for the optimization of the desalination/water purification systems, by using only the solar radiation source. In the present study, the state of art of the systems, hereafter called solar stills, was analyzed in order to understand their potential and limits from a physical and efficiency perspective. Afterwards, new prototypes were developed and tested, resulting in a significant improvement of the solar stills’ performances. Basing on results from the first test performed, the exergetic calculation of the system was carried out. . Additionally, the experimentation on different types of materials to be used for the construction of the solar stills, in association to the thermodynamic and fluid dynamic modeling processes, allowed us to reach a further development of the systems. Such improvements leaded to a higher efficiency of the solar still, compared to the state of the art. Once the system has been consolidated, a geo-spatial analysis based on both climatic conditions (geo-spatial index - GSI ) and anthropogenic conditions (socio-economic index - SEI), has been performed with the aim to identify the areas where the developed systems were more applicable.
Njomo, Donatien. "Contribution a l'etude d'un distillateur solaire a effet de serre : modelisation des transferts radiatifs, thermiques et de matiere couples dans un distillateur a ruisselement utilisant un stockage d'energie par chaleur latente." Poitiers, 1987. http://www.theses.fr/1987POIT2274.
Повний текст джерелаAmadou, Haoua. "Modélisation du séchage solaire sous serre des boues de stations d'épuration urbaines." Université Louis Pasteur (Strasbourg) (1971-2008), 2007. https://publication-theses.unistra.fr/public/theses_doctorat/2007/AMADOU_Haoua_2007.pdf.
Повний текст джерелаSolar drying method has quickly stood out as an effective solution for the dehydration of the sludge produced by waste water treatment plants built for less than 100. 000 pop. Eq. It allows small communities to fill up the lawful constraints. However the design rules of this process remain empirical and do not take in account the complexity of the involved physical phenomena. Thus, this thesis presents an improvement and an optimization of the design using numerical simulation tools. After a general presentation of the problems of urban residual sludge in France and those concerning solar drying of sludge, some essential concepts in the study of the drying are presented in chapter II. After a review of the various types of water that can be found in sludge, the concept of sorption isotherm is introduced. The ways of transport of water during the drying are then pointed out. The end of the chapter focuses on the modelling of the kinetics of drying. The development of a numerical model, simulating the transfer of sludge water during the solar drying under greenhouse, is described in chapter III. A setting of the equations of the various complex phenomena is carried out. The developed model consists in writing three equations of assessment of energy and one of transfer of matter, coupled and nonlinear. A numerical approach of resolution of the problem is also presented. Experimental devices and methods used throughout this work are described in chapter IV. Based mainly on the use of two types of small-scale models (model I and II), placed in a climatic chamber, the experimental method calls upon an experimental design carried out in two stages, so as to better apprehend the very complex coupling of the various thermal and mass transfers. Chapter V is devoted to the validation of the numerical model. The first part of this chapter exposes the experimental results of the parameters of sludge involved in modelling. Semi-empirical formulations concerning these sizes (isothermal of desorption and mass specific heat) were proposed. In the second part, the numerical results are compared with those of the experiments. The comparisons are often very satisfactory, as well for the transfers coupled of heat and mass as with the evaluation speeds of drying. Nevertheless, several phenomena escaping from the macroscopic and monodimensional formulation are mentioned to explain some differences between simulations and the observed behaviour. Chapter VI approaches the problems of the extrapolation of the developed model to an installation on a real scale. The first stage is devoted to couple this model with a generator of data, which makes it possible to reconstitute with a time step a climatic day "type". Finally, some parameters necessary to extrapolation are mentioned. This Work ends by a conclusion collecting all the results and the statement of prospects, which could constitute an interesting continuation with this study, in particular to take into account the space variations, and the adaptation of the model aiming the development of a tool of dimensioning or optimization of industrial site
Amadou, Haoua Sapin Rémy. "Modélisation du séchage solaire sous serre des boues de stations d'épuration urbaines." Strasbourg : Université Louis Pasteur, 2007. http://eprints-scd-ulp.u-strasbg.fr:8080/742/01/AMADOU_Haoua_2007.pdf.
Повний текст джерелаGrozdanov, Mitko. "Détermination théorique des distributions spatio-temporelles des températures de l'enceinte d'une serre et de son sous-sol." Perpignan, 1986. http://www.theses.fr/1986PERP0018.
Повний текст джерелаDemeule, Elizabeth. "Effet répressif de Bacillus subtilis et de Bacillus pumilus envers Rhizoctonia solani sur tomate et concombre de serre." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/66758.
Повний текст джерелаMakhlouf, Saïd. "Expérimentation et modélisation d'une serre solaire à stockage par chaleur latente assisté par pompe à chaleur de déshumidification." Nice, 1988. http://www.theses.fr/1988NICE4180.
Повний текст джерелаKahia, Mouna. "Lutte biologique contre deux pucerons ravageurs en serre (Aphis gossypii et Aulacorthum solani) par l'utilisation des microorganismes du sol." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/35001.
Повний текст джерелаThe foxglove aphid Aulacorthum solani (Kaltenbach) and the melon aphid Aphis gossypii (Glover) are among the most harmful aphids for greenhouse crops. Microbial biological control may be an effective method against these insects. The combination of different microbial agents can increase their efficiency. This work evaluates the efficacy of Beauveria bassiana ANT-03, Bacillus pumilus PTB180 and B. subtilis PTB185, used individually or in combination, to control A. gossypii and A. solani on cucumber and tomato, respectively. In the laboratory, ten L2 larvae of each aphid were placed in Petri dishes containing a tomato leaf or a cucumber leaf disc fixed in the agar plate. These larvae were sprayed with 1 mL of suspensions prepared according to the treatment (Control, B. pumilus, B. subtilis, B. bassiana, B. pumilus+ B. subtilis, B. bassiana+ B. pumilus, B bassiana+B. subtilis, B. bassiana+ B. pumilus+ B. subtilis). The same treatments used in the laboratory were applied in the greenhouse, but adult aphids were used. Laboratory and greenhouse test results revealed that by causing A. solani mortality and by affecting A. gossypii reproduction, both bacteria (B. pumilus PTB180 and B. subtilis PTB185) were able to demonstrate aphicide effect equivalent to that of the commercial product (Bioceres) containing the fungus. When used as a mixture, no additive effect between the three microorganisms studied was observed. Spore survival tests of the two bacteria and the fungus conducted in a greenhouse have shown that they retain a high level of population 106CF U/g fresh leaves up to nine days after the application when used alone or as a mixture. Thus, on plants, the two bacilli do not exhibit antifungal effect against B. bassiana ANT-03.
puceron de la digitale, puceron tacheté de la pomme de terre, puceron du melon, puceron du cotonnier
Santos, Fernando Hoefling dos. "Rendimento de módulos fotovoltaicos sob condições específicas do espectro solar incidente na Serra Gaúcha." reponame:Repositório Institucional da UCS, 2016. https://repositorio.ucs.br/handle/11338/1258.
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The purpose of this work is to determine the degree of influence that the meteorological and geographical conditions of Farroupilha city feature on the photovoltaic energy production capacity and also on the efficiency of the three main modules technologies for photovoltaic conversion present in the world market and, therefore, in the correct sizing of cogeneration systems connected to the local power grid. The behavior of the different technologies of photovoltaic panels will be determined by the spectral responses obtained by scanning graphic tested by internationally recognized institution and the generation of monthly average spectra of solar radiation is determined by the insertion of meteorological data of fourteen years of measurements provided by National Institute of Meteorology and tested on the SMARTS software 2.9.2 (Simple Model of the Atmospheric Radiative Transfer of Sunshine). Thus, we found an average annual increase of 2.04% in the short-circuit current to the monocrystalline silicon module, 2.14% for polycrystalline silicon module and 8.2% for thin film module amorphous silicon; followed by an average annual variation in the conversion efficiency of these photovoltaic modules -1.75%, -1.66% and + 4.19% consecutively. It will be executed sizing with performance conditions under the influence of the standard spectrum (G173-03) and under the particular influence of the spectrum of the Serra Gaúcha region, it was determined which of these technologies has the best features and lower return time of the investment to the specific climatic and geographic conditions of the city of Farroupilha, RS.
Rodriguez, Julio. "Déshydratation par effet de serre d'un produit emballé dans un film polymère perméable aux molécules d'eau : approche expérimentale et de modélisation." Phd thesis, Paris, ENSAM, 2006. http://pastel.archives-ouvertes.fr/pastel-00002348.
Повний текст джерелаSlim, Rayan. "Modélisation et conception d’une serre solaire assistée par pompes à chaleur pour le séchage des boues de station d’épuration." Paris, ENMP, 2007. http://www.theses.fr/2007ENMP1483.
Повний текст джерелаWastewater sludge management raises a serious challenge due to ever increasing environmental pollution and energy consumption. The aim of this work is to study the drying of wastewater sludge using solar energy combined with heat pumps and to investigate possible ways of providing supplemental energy to sludge drying when needed. A laboratory-scale drying test bench was set up to study the conductive drying of sludge and evaluate its drying characteristics. An analytical method was developed to evaluate water vapor diffusivity within urban sludge, modelled as coarse aggregated porous medium where only aggregates external porosity is accounted for. This method, which is based on the analytical solution of a fickian diffusive model, allows the evaluation of the impedance to which vapor diffusion is subjected throughout drying, as a function of the sludge dry solid content. Experiments highlighted the effect of mixing frequency on drying enhancement. Convective heat and mass transfers, occurring between air and sludge, were experimentally characterized. Experiments have shown the effect of increased surface air velocities on the enhancement of the drying mechanism. A correlation giving the deviation from the Lewis’ predicted mass transfer coefficients was established as a function of the sludge dry solid content. The concept of blowing air by means of linear slits along the greenhouse width was proposed as a way of improving air distribution inside the greenhouse. A mathematical model has been developed to simulate this new drying system and evaluate its performances and energy consumptions. Weather data were incorporated in order to evaluate system seasonal performances. The system analysis focused on the influence of climatic conditions on heat pumps operating conditions and allowed the definition of an optimal regulation based on the minimisation of the marginal energy consumption. Furthermore, simulations showed improvement on the combined drying system performances with reduced sludge thickness
Jaulin, Philippe. "Contribution à la simulation des paramètres climatiques : rayonnement solaire et pluie, en écoulement : application à la création de la soufflerie climatique Jules Verne." Poitiers, 1994. http://www.theses.fr/1994POIT2320.
Повний текст джерелаMoine, Lauriane. "Identification et détection d'une nouvelle espèce de Fusarium pathogène sur la tomate de serre en Amérique du Nord." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/30331/30331.pdf.
Повний текст джерелаMakhlouf, Saïd. "Expérimentation et modélisation d'une serre solaire à air avec stockage par chaleur latente assisté par pompe à chaleur de déshumidification." Grenoble : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37593829q.
Повний текст джерелаLavergne, Martin. "Opportunités solaires passives : optimisation du confort et de la consommation énergétique d'un espace séjour avec serre accolée." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26147/26147.pdf.
Повний текст джерелаThis research proposes to analyze the solar passive opportunities of a greenhouse attached to a living-room to maximize comfort and energy consumption. Numerical simulations of different configurations using the tool PLEIADES+COMFIE 2.0 can handle the different physical phenomena present in such space. The results are presented in tables and histograms that allow to compare the impact of different variables studied on the temperature of the greenhouse and energy consumption of the living-room. These solutions meet the climatic conditions of Quebec City and are a residential application.
Suh, Seung Jik. "Étude théorique et expérimentale d'un générateur d'air chaud fonctionnant par convection naturelle constituée d'une serre agricole munie d'absorbeurs et d'un stockage de chaleur en sous-sol à l'aide de conduits : application à la production de pleurotes." Nice, 1986. http://www.theses.fr/1986NICE4049.
Повний текст джерелаGiuntini, Francesca. "Applications of sunspaces in building facades: energy performances and technical/economic feasibility." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Знайти повний текст джерелаWeber, Eliseu Jose. "Estimativa e mapeamento da radiação solar incidente em superfícies com topografia heterogênea na zona de produção vitivinícola Serra Gaúcha." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/32347.
Повний текст джерелаSolar radiation exerts major influence on energy exchange processes between atmosphere and Earth surface, and affects all the physical, chemical and biological processes in ecosystems. In areas with heterogeneous topography, incident radiation depends on elevation, slope, orientation, and position of the surface related to neighboring surfaces. Under such conditions, beside atmospheric attenuation, also surface topography and its effects on incident radiation must be taken into account to estimate solar radiation. The aim of this study was to estimate the solar radiation and to generate radiation maps of the Serra Gaúcha wine production zone, accounting simultaneously for the influence of atmosphere and topography. Long term 10-day average global solar radiation data measured at four meteorological stations, a Digital Elevation Model, GPS receivers and Geographic Information Systems (GIS) software were used. Atmosphere was characterized by its diffuse fraction (Kd) and direct transmittance. Kd was estimated by three empirical relationships based on the clearness index (Kt). Direct transmittance was calculated by difference from Kd and corrected for the smallest optical path based on the mean zenith angle applied in three different ways. Incident radiation was estimated for decendial periods, using the Solar Analyst software and the above mentioned atmospheric parameters. Solar radiation estimates were validated with average data measured at meteorological stations within the study area. The best performance was obtained with Kd estimated by the linear coefficient of the Ångstrom equation fitted for the region, and direct transmittance corrected by the mean zenith angle excluding Sun elevations below 10° in autumn-winter. The determination coefficient between estimated and measured data was 0.8511, and an underestimation of 4.59% was found. The estimated maps showed that the radiation field has a high spatial and temporal variability due to heterogeneous topography. The annual global irradiation over the study area ranged from 425 MJ.m-2 to 5,045 MJ.m-2. The spatial variability was lower in spring and summer, and increased in autumn and winter, with larger variations observed in south facing slopes. The direct radiation was the component most affected by topography, constituting a major driver of the global radiation variability on surfaces with heterogeneous topography in Serra Gaúcha. The proposed methodology allowed estimates of incident solar radiation with high accuracy and high spatial resolution.
ENDAMNE, EMMANUEL. "Faisabilite technico-economique d'un systeme de sechage solaire de feves de cacao au gabon, constitue d'un sechoir situe a l'interieur d'une serre agricole." Paris 7, 1990. http://www.theses.fr/1990PA077193.
Повний текст джерелаMorini, Miriam. "Progettazione solare passiva e zone climatiche. Scelte contestuali per un bilancio energetico ottimizzato mediante modellazione in regime dinamico: la serra bioclimatica." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20072/.
Повний текст джерелаN'Dongo, Mamadou. "Etude theorique d'un generateur solaire d'air chaud constitue d'une serre agricole et d'un stockage de chaleur en sous-sol a l'aide de conduits : application au sechage." Clermont-Ferrand 2, 1989. http://www.theses.fr/1989CLF2S912.
Повний текст джерелаSlim, Rayan. "Étude et conception d'un procédé de séchage combiné de boues de stations d'épuration par énergie solaire et pompe à chaleur." Phd thesis, École Nationale Supérieure des Mines de Paris, 2007. http://pastel.archives-ouvertes.fr/pastel-00003485.
Повний текст джерелаOuld, Khaoua Sid-Ali. "Modélisation de l'aération naturelle et du microclimat des serres en verre de grande portée sous climat tempéré océanique." Phd thesis, Université d'Angers, 2006. http://tel.archives-ouvertes.fr/tel-00357023.
Повний текст джерелаLa ventilation naturelle est le système le plus économique pour réguler le microclimat interne de la serre. Néanmoins, elle n'offre qu'un contrôle limité sur l'écoulement d'air dans la serre et reste difficile à maîtriser.
Cette étude contribue à l'analyse et à la modélisation des phénomènes mis en jeu dans l'aération naturelle des serres en verre, de grande portée, habituellement utilisées en culture ornementale (plantes en pots), sous climat tempéré, tel qu'en Anjou. Deux approches complémentaires incluant expérimentation in situ et modélisation mathématique du climat distribué sont mises en œuvre.
Des campagnes de mesures ont été menées à l'intérieur d'une serre de production et dans son environnement immédiat sous conditions réelles de culture ornementale. Des données météorologiques : température de l'air, vitesse et direction du vent, rayonnement solaire et atmosphérique, ont été collectées. L'ensemble de ces mesures constitue un jeu de données conséquent destiné à fournir les entrées du modèle numérique. Parallèlement à ces mesures, nous avons systématiquement procédé à des mesures du taux de renouvellement d'air qui ont été utilisées pour valider le modèle.
Un modèle numérique a été mis en œuvre. Il s'appuie sur un code de mécanique des fluides numérique (Computational Fluid Dynamics). Ce code permet de prédire les champs de vitesses et de températures à l'intérieur de la serre après résolution numérique des équations de base qui régissent les mouvements d'air (équations de Navier-Stokes couplées à l'équation de l'énergie) dans le domaine de calcul considéré. La turbulence, dont l'effet est loin d'être négligeable sous serre, a été modélisée à l'aide d'une fermeture de type k-e. Le taux d'aération a pu être déduit ensuite par résolution d'une équation de transport d'un gaz traceur virtuel. Un module radiatif a été ajouté dans le modèle numérique afin de prendre en compte le rayonnement d'origine solaire et atmosphérique. Ce module résout l'équation des Transferts Radiatifs qui est couplée à l'équation de l'énergie.
Ce modèle « complet » a pu être vérifié et validé pour différentes conditions climatiques. Il a été ensuite utilisé pour analyser l'impact de la configuration des ouvrants sur le climat et sur les flux de chaleur au niveau de la toiture de la serre. Cette analyse a porté non seulement sur la ventilation mais aussi sur l'homogénéité de la distribution des vitesses et des températures dans la serre et notamment au niveau des cultures.
Enfin, des indicateurs d'efficacité de l'aération de la serre sous climat estival ont pu être dégagés pour différentes configurations d'aération (ouverture) et différentes conditions climatiques.
Njomo, Donatien. "Contribution à l'étude d'un distillateur solaire à effet de serre modélisation des transferts radiatifs, thermiques et de matière couplés dans un distillateur à ruissellement utilisant un stockage d'énergie par chaleur latente." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37600033b.
Повний текст джерелаKhoury, Antonio. "Parametres caracteristiques d'une photopile : etude experimentale, influence de la temperature." Perpignan, 1987. http://www.theses.fr/1987PERP0026.
Повний текст джерелаPlouzeau, Maud. "Mélanges matrice polymère / molécules optiquement actives Etude, optimisation de la compatibilité et amélioration de leur tenue lumière." Thesis, Le Mans, 2017. http://www.theses.fr/2017LEMA1043.
Повний текст джерелаThe CASCADE company was founded to develop technology said to “light cascades”. These “light cascades” consist of incorporating an appropriate combination of optically active molecules (OAM) into host materials allowing wavelength-shifting effects to optimize the quality and quantity of direct and diffuse sunlight. When such OAM combination is introduced into greenhouse films, an increase of agronomic yields and early crop are observed. Such behavior is due to the fact that OAM allow to adapt the solar spectrum to the photosynthesis and the chlorophyll function of plants. Greenhouse films are based on polyethylene (PE) and/or poly(ethylene-co-vinyl acetate) (EVA) copolymers. When OAM are introduced within such host polymers, their optically efficiency is limited for long term industrial applications. Therefore, the thesis goal is to improve the OAM lightfastness into PE/EVA polymer matrix by different strategies: (i) the study of polymer matrix nature and topology influence, (ii) the optimization of current formulations by additives or compatibilizers adding and (iii) the OAM encapsulation into (un)-crosslinked PMMA particles
PANTINI, SARA. "Analysis and modelling of leachate and gas generation at landfill sites focused on mechanically-biologically treated waste." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2013. http://hdl.handle.net/2108/203393.
Повний текст джерела