Pour faire face à la forte augmentation de la consommation en climatisation et la consommation électrique associée, il est nécessaire de développer des systèmes de rafraîchissement basse consommation de bâtiment. Ce travail propose un nouveau système de rafraîchissement qui se veut économe en énergie, peu coûteux et simple à installer. Il associe les techniques de dissipation de chaleur par évaporation, rayonnement vers le ciel et géothermie. Ce système est constitué d'un réservoir poreux installé en extérieur et d'un réservoir de stockage placé dans le vide sanitaire. Lorsque le bâtiment a besoin de rafraîchissement, une pompe puise de l'eau fraîche dans le stockage, la fait passer dans le plancher rafraîchissant pour absorber la chaleur excédentaire du bâtiment puis stocke l'eau dans le réservoir poreux placé à l'extérieur. Le réservoir poreux refroidit l'eau qu'il contient par évaporation, rayonnement vers le ciel puis se vide dans le stockage. Le réservoir de stockage installé dans le vide sanitaire se refroidit aussi en continu grâce au contact direct avec le sol. Les propriétés poreuses et la géométrie du réservoir poreux influent fortement sur ses performances de refroidissement. Une étude paramétrique menée avec un modèle numérique simulant les transferts hydriques et thermique permet de choisir un réservoir adéquat pour cette application. Un réservoir poreux donnant de bonnes performances (70 W/m2 de puissance évaporative) a été identifié. Le système de rafraîchissement a été installé et testé expérimentalement sur une maison à échelle réelle à Bordeaux. Mis en service durant l'été 2015, le système a fonctionné de façon autonome durant 44 jours. L'utilisation de ce système a permis de maintenir durant la période de test un très bon confort thermique à l'intérieur d'un bâtiment expérimental bien isolé, non ventilé, avec des apports solaires, tout en ayant une consommation électrique faible (le COP moyen du système est de 20.8). Un modèle numérique du système complet a été développé sous Modelica, calibré sur les mesures expérimentales puis couplé à un modèle de bâtiment. Les résultats de simulation montrent que l'installation de ce système améliore nettement le confort intérieur du bâtiment sur l'ensemble de l'été pour toutes les configurations testées (climat, gestion des voletsdots). Un système aux dimensions optimisées (avec un stockage de 2.2 m3 et un réservoir poreux de 0.215 m3), installé sur une maison individuelle type RT2012 de 100 m2 à Bordeaux, fonctionne avec un COP moyen de 24 et permet de maintenir un bon niveau de confort à l'intérieur du bâtiment tout l'été. / To face the dramatic increase of energy consumption due to air conditioning use in buildings, new low energy consumption systems need to be developed. This work proposes a new cooling system which aims to be energy efficient, cheap and easy to install. This system takes advantage of evaporation cooling, ground earth cooling and sky radiative cooling techniques. The two main components of this new system are a porous tank set outside and a storage tank set in the basement of the building. When the inside house temperature exceeds the comfort temperature, cool water passes from the storage tank through the cooling floor, removes heat from the building and is then send to the porous tank. The water contained in the porous tank is cooled down due to evaporation and radiative effects and then flows back to the storage. The storage tank installed in the basement enables further cooling of the water thanks to direct contact with the ground. Porous properties and geometry of the tank have a great influence on the cooling performances of the tank. A heat and mass transfer model has been developed to simulate the thermal and hydric behavior of the tank. This model has been used to choose an appropriate tank. A tank giving good performances (70 W/m2 of evaporative power) is identified. The complete cooling system has been installed on a house in Bordeaux and tested at real scale during an experimental campaign. The system worked for 44 days during summer 2015 and allowed to maintain a very good thermal comfort level in the experimental building (insulated, with solar load and without ventilation). Its very low electricity needs brings the average coefficient of performance of the system to 20.8. A numerical model of the system has been developed, calibrated with experimental data and coupled with a building model. Simulation results show that for all tested configurations (climate, shading…), the system clearly improves the thermal comfort in the building. Optimized sizing, keepinp reasonnable tank sizes (storage and evaporator volumes of 2.2 m3 and 0.215 m3 respectively), shows that this system works with an average COP of 24 and maintains a good comfort level in an individual house of 100 m2 located in Bordeaux.

Compte tenu de l'importance des pigments naturels dans les aliments et leur sensibilité aux traitements thermiques, les cinétiques de dégradation des anthocyanes ont été étudiées à très hautes températures (100 à 180 ºC). Pour obtenir une base de données expérimentale fiable dissociant les transferts d'énergie et de matière, un mini-réacteur étanche a été utilisé pour le traitement d'une matrice modèle (jus de mûre et sable) en faisant varier la température et l'activité de l'eau (0,20<aw<0,99). L'hypothèse d'une réaction d'ordre 1 pour la dégradation des anthocyanes a permis de modéliser et de déterminer les paramètres cinétiques suivant une méthode non-isotherme prenant en compte à la fois le profil de température et indépendamment l'homogénéité ou l'hétérogénéité du champs de température au sein de la matrice. Il a été démontré que les constantes de réaction sont très influencées par la diminution de l'activité de l'eau, facteur qui fait augmenter la réactivité. Ces résultats originaux ont été validés sur une matrice alimentaire (papaye verte-jus de mûre) soumise au couplage d'un procédé de formulation par déshydratation par immersion-imprégnation, suivi d'une opération de friture, à l'aide d'un modèle qui intègre les transferts de vapeur et d'énergie et la cinétique réactionnelle. Le modèle permet une meilleure compréhension des phénomènes et il peut être intégré dans une démarche d'optimisation séquentielle associant différentes opérations unitaires avec des traitements thermiques à très hautes températures. / Given the importance of natural pigments in foods and their sensitivity to heat treatment, degradation kinetics of anthocyanins have been studied at very high temperatures (100 to 180 ºC). For a reliable experimental database that dissociates heat and mass transfer, a hermetic mini-reactor was used for the treatment of a model matrix (blackberry juice and sand) by varying the temperature and activity water (0.20<aw<0.99). The assumption of a first order reaction for the anthocyanins degradation was used to model and determine the kinetic parameters using a non-isothermal method taking into account both the temperature profile and independently the homogeneity or heterogeneity of the matrix temperature field. It has been shown that the rate constants are strongly influenced by the water activity reduction, a factor that increases the anthocyanins reactivity. These original results were validated on a food matrix (green papaya-blackberry juice) submitted to the coupling of a formulation process by osmotic dehydration, followed by a deep-fat frying operation, using a model which includes the vapor and heat transfer and the reaction kinetics. The model allows a better understanding of the phenomena and can be integrated into a sequential optimization approach combining different unit operations with heat treatments at high temperatures.

La distillation est une opération unitaire de séparation qui est largement utilisée. Toutefois, lorsque les volatilités des corps à séparer sont proches, le besoin en énergie de la colonne augmente, et l’efficacité énergétique du procédé de séparation diminue. Ainsi, la faiblesse de la distillation est son efficacité énergétique (au maximum 10 %). La réduction de la consommation énergétique des colonnes à distiller est donc un enjeu majeur dans le contexte énergétique actuel. Une des voies prometteuses est les colonnes à distiller dites HIDiC (Heat Integrated Distillation Column). Dans ce type de configuration, la colonne est scindée en deux colonnes : une colonne d’appauvrissement et une colonne d’enrichissement. La colonne d’appauvrissement opère à un niveau de pression plus faible que la colonne d’enrichissement. Un compresseur ainsi qu’une vanne de détente sont installés pour ajuster les niveaux de pression respectifs dans les deux parties. La différence de pression ainsi établie permet d’imposer une différence de températures qui offre la possibilité de transférer de l’énergie entre les deux colonnes par l’intermédiaire d’une technologie de transfert de chaleur. Dans un premier temps, l’objet de cette étude est de valider une nouvelle technologie de transfert thermique pour les colonnes concentriques HIDiC. Cette technologie innovante, Mousse métallique à cellules ouvertes, est caractérisée et validée en comparant avec un garnissage classique. Pour cela, un pilote expérimental de colonne concentrique contenant le garnissage structuré a été mis en oeuvre au laboratoire. Les résultats des mousses métalliques ont montré une performance thermique plus importante que le garnissage classique avec un gain moyen de 102 %. La conductance thermique des mousses métallique à cellules ouvertes obtenue expérimentalement est de 1285 W.K-1. Ces résultats confirment l’intérêt de l’utilisation du garnissage innovant dans les colonnes de distillation HIDiC en tant que technologie de transfert de chaleur. Dans un deuxième temps, un outil de simulation des colonnes HIDiC est développé dans le logiciel commercial ProSim Plus™®. Par rapport aux colonnes de distillation conventionnelles, les colonnes HIDiC possèdent des paramètres spécifiques tels que le rapport de pression et le profil d’échange de chaleur entre les deux sections de la colonne. Une procédure d’optimisation est élaborée afin d’obtenir une colonne HIDiC avec un coût total annuel « TAC » minimal et une distribution énergétique optimale. La méthode stochastique est adoptée avec un algorithme génétique « AG » ou l’initialisation des variables d’action n’est pas nécessaire. Deux études de cas sont effectuées. L’une est un système largement étudié dans la littérature, le mélange (Benzène/Toluène). La procédure de conception et d’optimisation est évaluée. Une réduction du TAC de 7,4 % et 13,9 % est obtenue par rapport aux précédents travaux de la littérature. L’autre étude de cas est un mélange binaire (Cyclohexane/n-Heptane). Les résultats de la simulation concernant les quantités d’énergie échangées de la colonne d’enrichissement vers la colonne d’appauvrissement sont validés en vérifiant la faisabilité du transfert thermique par la conductance thermique de la technologie innovante obtenue expérimentalement UA (W.K-1). / Distillation is the most applied separation technology. Its major drawback is the low thermodynamic efficiency (typically around 10 %). In response to environmental issues that concern energy consumption of distillation column, HIDiC (heat integrated distillation column) which combines advantages of vapor recompression and diabatic operation is expected to have a large impact on energy saving. The mixtures with close boiling point are confirmed to be the best candidates for HIDiC. In fact, in this configuration the rectifying section and the stripping section are separated. Heat is transferred inside the distillation column from the rectifying to the stripping section, because the operating pressure (and thus the temperature) of the rectifying section is increased by means of the compressor. First, a novel technology of heat and mass transfer between rectifying column and stripping column is characterized and validated on an experimental pilot. A concentric HIDiC which contains metal foam packing is designed. Compared to the Raschig Super-Ring results, the heat transfer in this structured packing is more efficient, with a gain up to 102 %. The obtained thermal conductance UA (W.K-1) of the innovative column packing is 1285 W.K-1. This confirms the purpose of open cell metal foams use in HIDiC as a heat transfer technology. Secondly, the aim of this study is to optimize the HIDiC sensitive parameters so as to minimize the Total Annual Cost (TAC). For this, a HIDiC simulation model is developed by using commercial software ProSim Plus™®. GA (Genetic Algorithm) is used to find the optimal HIDiC configuration where variables are optimized without initialization. Binary (Benzene/Toluene) separation case is examined for the evaluation of the proposed method. As a result, 7.4 % and 13.9 % TAC reductions are realized in comparison with the reported solutions in previous works. Binary (Cyclohexane/n-Heptane) is studied to evaluate the physical feasibility of heat transfer between rectifying and stripping column by the experimental thermal conductance (UA experimental [W.K-1]) of the innovative column packing.

Les machines à absorption LiBr/H2O, appliquées aux systèmes de rafraîchissement par compression chimique présentent des avantages et des inconvénients à l'heure de leur intégration dans des bâtiments de basse consommation. Grandes tailles et coûts de mise en œuvre élevés les rendent peu attractives. Le développement de modules évapo-absorbeur et desorb-condenseur compacts et multifonctionnels, utilisant des échangeurs à film ruisselants couplés peuvent être une solution pour réduire les coûts de mise en œuvre, et augmenter la compacité et le rendement global du processus d'absorption. L'étude se centre autour de l'absorption de la vapeur d'eau à basse pression au sein d'un film de bromure de lithium qui ruisselle sur des échangeurs à plaques verticales. Les objectifs de la thèse sont le développement d'un modèle théorique simple décrivant le transfert de chaleur et de masse et sa validation à l'aide d'expériences de référence. Le modèle analytique est construit à l'aide des méthodes intégrales mettant en ouvre un écoulement laminaire établit à l'entrée de l'absorbeur et des conditions de saturation à l'interface Nous avons résolu le problème couplé de transfert de masse et de chaleur en prenant en compte couches limites thermiques et diffusives. Une représentation adimensionnelle des transferts à l'aide des nombres de Nusselt et de Sherwood en fonction du nombre de Graetz permet de décrire de manière générale les différentes zones thermiques et diffusives. Les variations de la température et la concentration à l'interface sont prises en compte, en considérant la linéarité des équations de transfert et, en appliquant la théorie des perturbations. Un banc d'essais a été spécifiquement développé pour l'étude de l'absorption de vapeur sur des films ruisselants de bromure de lithium à basse Reynolds (Re < 500). Il permet de fixer l'état de la solution LiBr à l'entrée (température, concentration et débit) ainsi que les conditions aux limites (pression de vapeur, condition adiabatique ou de température imposée à la paroi verticale). Différentes géométries de plaque sont comparées aux résultats du model en vu de quantifier l'impact des effets de bord et des instabilités. / Low pressure absorption machines, used in chemical compression refrigeration systems present several advantages and drawbacks in sustainable buildings integration. Large sizes and high implementation cost makes them unprofitable. Compact absorption machines with multifunctional absorption and desorption units using coupled falling film exchangers can be one solution to reduce implementation costs, increasing compactness and global machine performance. The present study is focused in the absorption process applied to vertical falling film exchangers and its improvement. The thesis objectives are: construction of a simple theoretical model; describing heat and mass transfer over a Lithium bromide falling film and model validation after data processing from a test bench build for this purpose. The analytic model is based on integral methods taking into account established flow conditions at the top of the plate, parabolic velocity profiles and saturation conditions at the interface. We solved the coupled heat and mass transfer problem considering thermal and diffusive boundary layers. Non dimensional representation of Nusselt (Sherwood) number as a function of the modified Graetz number, enables a general description of different transfer zones. Concentration and temperature evolution at the interface are studied considering the linearity of heat and mass transfer equations and applying perturbations theory. The test bench was created to study vapor absorption in a lithium bromide falling film at low Reynolds Numbers (Re < 500). Absorber inlet parameters (temperature, concentration and mass flow rate) and also boundary conditions (vapor pressure, adiabatic or isothermal condition at the vertical wall) can be varied. Different plate geometries were studied and compared with model results, to evaluate boundary conditions and instabilities. This study presents a simplified model for adiabatic and isothermal falling films absorbers with a local description of the absorption process. Influences of flow conditions and initial operation parameters were simulated, studied and compared with equivalent models and experimental data from literature;

Orientador: Amarildo Tabone Paschoalini / Banca: Luiz de Paula do Nascimento / Banca: Marcelo Moreira Ganzarolli / Resumo: Os objetivos deste trabalho são determinar a potência térmica dissipada dos componentes eletrônicos de forma experimental e verificar a eficácia do método através de simulações numéricas computacionais utilizando o software comercial ANSYS. O Software ANSYS foi usado como ferramenta de Dinâmica de Fluidos Computacional neste trabalho. Para a realização deste trabalho um ensaio experimental foi executado a fim de obter alguns dados para o cálculo da potência térmica dissipada, outros foram fornecidos pelo CPqD e Trópico. Foi montado um Laboratório Computacional com o apoio da Trópico e do CPqD na UNESP, campus de Ilha Solteira para a simulações numéricas. O método de cálculo de potência apresentou-se eficaz, de modo na melhor situação os resultados apresentaram um erro relativo médio de 1,94%. / Abstract: The purpose of this study is to determine the thermal power dissipation of electronic components through an experimental test and verify the effectiveness of the method through numerical simulations using the computational software ANSYS commercial. Software ANSYS was used as a tool for Computational Fluid Dynamics for this work. For this work an experimental test was done to obtain some data to calculate the thermal power dissipation, others were supplied by CPqD, Nilko and Trópico. It was dubbed a Computer Laboratory with the support of the Trópico, CPqD and at UNESP, campus de Ilha Solteira for the numerical simulations. The method of calculation of power proved to be effective, that the better the results showed a mean relative error is 1.94%. / Mestre

Made available in DSpace on 2014-06-11T19:27:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-11-28Bitstream added on 2014-06-13T19:55:37Z : No. of bitstreams: 1 sousa_rr_me_ilha.pdf: 2111422 bytes, checksum: 55ec661a37c8225f8f3075712c8ec225 (MD5) / Fundação de Ensino Pesquisa e Extensão de Ilha Solteira (FEPISA) / Os objetivos deste trabalho são determinar a potência térmica dissipada dos componentes eletrônicos de forma experimental e verificar a eficácia do método através de simulações numéricas computacionais utilizando o software comercial ANSYS. O Software ANSYS foi usado como ferramenta de Dinâmica de Fluidos Computacional neste trabalho. Para a realização deste trabalho um ensaio experimental foi executado a fim de obter alguns dados para o cálculo da potência térmica dissipada, outros foram fornecidos pelo CPqD e Trópico. Foi montado um Laboratório Computacional com o apoio da Trópico e do CPqD na UNESP, campus de Ilha Solteira para a simulações numéricas. O método de cálculo de potência apresentou-se eficaz, de modo na melhor situação os resultados apresentaram um erro relativo médio de 1,94%. / The purpose of this study is to determine the thermal power dissipation of electronic components through an experimental test and verify the effectiveness of the method through numerical simulations using the computational software ANSYS commercial. Software ANSYS was used as a tool for Computational Fluid Dynamics for this work. For this work an experimental test was done to obtain some data to calculate the thermal power dissipation, others were supplied by CPqD, Nilko and Trópico. It was dubbed a Computer Laboratory with the support of the Trópico, CPqD and at UNESP, campus de Ilha Solteira for the numerical simulations. The method of calculation of power proved to be effective, that the better the results showed a mean relative error is 1.94%.

Made available in DSpace on 2015-05-08T15:00:10Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1904620 bytes, checksum: 13a823522316cba8691ca5d7abac9d7f (MD5) Previous issue date: 2010-07-30 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / The simultaneous heat and mass transfer phenomenon presents on the absorbers of the absorption refrigeration machine was studied by Generalized Integral Transform Technique GITT, for three practical interest cases with growing degree of difficulty in your mathematical formulation. The two first occur over an inclined flat plane with laminar flow regime. It is considered the fully developed flow and obtained the explicit velocity profile with constant thickness film. The adiabatic and isothermal wall is analyzed. The third case, that represent a real condition of operation occur over external surface of a single tube. It models the falling film on a tube where the thickness of the film varies along the perimeter. The phenomenon studied, classified like diffusion problem coupled, presents a strong couplement on the liquid-vapor interface and so, the energy and concentration equations are simultaneously solved. The solutions are obtained from two auxiliary eigenvalues problems for concentration and energy problems. Following the GITT formalism, a hybrid analyticnumerical solution to the potentials is described. Results of practical interest are found such as Sherwood and Nusselt numbers, mass flux in the interface and average potentials. / O fenômeno da transferência simultânea de calor e massa presente nos absorvedores das máquinas de refrigeração por absorção foi estudado pela Técnica da Transformada Integral Generalizada, do inglês Generalized Integral Transform Technique GITT, para três casos de interesse prático com crescente grau de dificuldade em sua formulação matemática. Os dois primeiros se referem a uma placa plana inclinada com escoamento em regime laminar, com perfil de velocidades conhecido e com a espessura da película constante ao longo do escoamento. Esta situação é examinada para as condições limites: parede adiabática e parede isotérmica. O terceiro caso, mais próximo da condição real de operação, modela o escoamento sobre um tubo onde a espessura da película varia ao longo do perímetro. O fenômeno, classificado como problema de difusão acoplado, apresenta um forte acoplamento na interface líquido-vapor e com isso as equações que representam as distribuições de energia e concentração da película líquida durante o escoamento, não podem ser solucionadas separadamente. A solução é construída com base em dois problemas auxiliares: um para a energia e outro para a concentração. Seguindo o formalismo da GITT, os potenciais são obtidos de forma híbrida analítico-numérico. Resultados de interesse práticos são obtidos como números de Sherwood e de Nusselt, bem como o fluxo de massa na interface e os potenciais médios.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This work presents a 3D computational/mathematical model to solve the heat diffusion equation with phase change, considering addition of material and complex geometry. The finite volume method was used and the computational code was implemented in C++, using Borland compiler. Experimental tests were carried out for validation of the model in question. It was used a material whose thermal properties, varying with temperature, are well known: the stainless steel AISI 304. In addition, an inverse technique based on Golden Section was implemented to estimate the heat flux supplied to the sample. Experimental temperatures were measured using thermocouples type J - in a total of 07 (seven) - all connected to the metal sheet and the Agilent 34970A datalogger. The metal had a \"V\" Groove of 45°. In this location was conducted the deposition of material on only one welding pass and the dimensions (width and height) were measured after welding. The thermal model was validated from comparisons between measured and calculated temperatures. The results were consistent and validated the computational/mathematical model proposed. An innovation presented in this work consists in the calculation and visualization of the dimensions of the welding pool during welding. The complex geometry obtained proves that more studies are needed and new models must be designed to clarify and explain the formation of welding pool during welding of metal sheet. / Desenvolve-se, neste trabalho, um modelo matemático/computacional 3D (tridimensional) de difusão de calor com mudança de fase, acréscimo de material e geometria complexa. O método de volumes finitos foi implementado em linguagem C, utilizando o compilador Borland. Foram realizados testes experimentais para a validação do modelo em questão. Usou-se um material cujas propriedades térmicas, variando com a temperatura, são bem conhecidas: o aço inox AISI 304. Além do modelo direto já citado, foi implementada uma técnica inversa para o cálculo do fluxo de calor. Utilizou-se neste caso a amplamente conhecida Seção Áurea: técnica que exige uma simplificação, fluxo de calor constante ao longo do tempo de soldagem. As temperaturas na chapa foram medidas utilizando termopares do tipo J - em um total de 07 (sete) - todos ligados ao datalogger Agilent 34970A. As medições foram feitas do lado oposto à tocha de soldagem. A chapa metálica possuía um chanfro em V de 45º. Neste local foi realizada a deposição de material (reforço) em somente um passe de soldagem. As dimensões da geometria do reforço (largura e altura) foram medidas depois da realização da soldagem. Em relação aos resultados, além da comparação entre as temperaturas medidas e calculadas, foi também determinada a eficiência térmica da soldagem. Os resultados foram consistentes e validaram o modelo matemático/computacional proposto. Uma inovação apresentada neste trabalho consiste no cálculo e visualização gráfica tridimensional da poça de fusão ao longo do tempo. A complexa geometria obtida comprova que mais estudos se fazem necessários e que novos modelos devem ser concebidos para esclarecer e explicar a formação da poça de fusão durante a soldagem de chapas metálicas. / Doutor em Engenharia Mecânica

Com base em um modelo fenomenológico e a partir de dados experimentais obtidos numa planta piloto, foi obtida uma correlação entre o desempenho de uma torre de resfriamento em função das principais variáveis de processo: fluxos mássicos do gás e da água pela torre, e temperatura de entrada da água. Os resultados apresentaram boa consistência, comparados com os da literatura. A metodologia desenvolvida pode, com relativa facilidade, ser aplicada para torres de resfriamento industriais, pois se baseia em medidas de variáveis, factíveis em termos práticos. Efetuou-se também um estudo paralelo com base em modelagem e simulações matemáticas do comportamento de uma torre de resfriamento de água em condições severas, com temperatura da água de alimentação superior a 50°C. Constatou-se que o coeficiente de transporte de massa na torre de resfriamento aparentemente não é afetado. / Cooling towers are widely used in many industrial and utility plants and its thermal performance is of vital importance. In the present work, using a phenomenological model and by experiments carried on over a pilot installation, the mass transfer coefficient dependence of air and water flow rates and inlet cooling water temperature is determined. The approach proposed may be useful in addition for characterization of industrial cooling towers since it depends on temperature and flow rate measurement usually available in typical plants. A parallel study concerning high mass transfer rate theory is accomplished. Through mathematical modeling and simulations based on this study no influence is detected on the mass transfer coefficient in the cooling tower, operating under harsh conditions with inlet water temperature up to 90°C.

Neste trabalho, foi estudado o desempenho de um sistema constituído de torres de resfriamento e a sua integração em uma planta industrial de hidrogenação de butadieno. Caracterizou-se o desempenho das torres de resfriamento com base em um modelo fenomenológico, cujos parâmetros foram obtidos a partir da medição de variáveis operacionais reais. O processo de hidrogenação foi configurado em um simulador de processos, sendo o caso base estabelecido nas condições de projeto. Elaborou-se um módulo específico referente às torres de resfriamento, que foi integrado ao processo configurado no simulador. Em seguida, analisaram-se as interações das condições operacionais da torre de resfriamento no desempenho do processo industrial. / In the present work, the performance of a system composed of a cooling tower integrated in butadiene hydrogenation plant was studied. An experimental investigation was made to characterize the cooling towers based on a phenomenological model and in real process conditions. The hydrogenation process was configured on a process simulator and design specifications were considered as base case. A cooling tower module was developed and integrated to the process simulator. The interaction of the cooling tower system and the plant operation was investigated.