Made available in DSpace on 2014-12-17T14:08:45Z (GMT). No. of bitstreams: 1 BrennyDS_DISSERT.pdf: 1612127 bytes, checksum: 3c87c1df9d7ae2d4e7fffbc7fbfdc3ee (MD5) Previous issue date: 2011-04-05 / When it comes to oil and gas in Brazil is almost certain that we are referring to activities in deep waters off the coast of Campos, Rio de Janeiro, the main field of action of PETROBRAS and a small number of multinational oil companies . Since the Law 9.478/97 allows, by means of concessions, that other companies other than Petrobras, to explore and produce oil and gas domestically. Soon it moved, then the private companies that want small and medium-sized businesses to invest in such activities, forming a segment of independent producers, as occurs in other countries. In this context, this work aims at making an economic feasibility study, is currently analyzing how this thread and focus on the factors that contribute to its development as well as those that constitute barriers. To this end, we conducted a survey examining some mature fields that are in production in order to capture cost information in the phases of project, operation and abandonment. The work also presents an analysis of the results obtained in the survey, identifying the costs higher. With the results obtained through the study used economic engineering tools such as NPV and IRR, using a variety of design scenarios, to study the economic viability of these fields. In scenario 4 was set a production of 4.0 m? / d of oil, which is an expected average production for several of these fields, whose minimum value of a barrel of oil, to enable this field, was $ 55.00, this value well below what was being practiced in the market today. / Quando se fala em produ??o de petr?leo e g?s no Brasil ? quase certo que estamos nos referindo ?s atividades desenvolvidas em ?guas profundas no litoral de Campos, no Rio de Janeiro, principal cen?rio de atua??o da PETROBRAS e de um pequeno n?mero de companhias multinacionais de petr?leo. Sendo que a Lei 9.478/97 permitiu, por meio de concess?es, que outras companhias, al?m da Petrobras, explorassem e produzissem petr?leo e g?s em territ?rio nacional. Logo passou-se, ent?o, a desejar que empresas privadas de pequeno e m?dio porte investissem em tais atividades, formando um segmento de produtores independentes, como ocorre em outros pa?ses. Neste contexto, o presente trabalho tem como objetivo, fazer um estudo de viabilidade econ?mica, analisando como se encontra atualmente este segmento e focalizar os fatores que colaboram para o seu desenvolvimento, assim como aqueles que se constituem em entraves. Para tal, foi feita uma pesquisa analisando alguns campos maduros, no intuito de captar informa??es de custos nas fases de projeto, opera??o e abandono. O trabalho apresenta, tamb?m, uma an?lise dos principais resultados obtidos com a realiza??o da pesquisa, identificando os maiores custos. Com os resultados obtidos atrav?s da pesquisa, foi utilizado ferramentas da engenharia econ?mica, tais como VPL e TIR, utilizando v?rios cen?rios de projetos, para fazer o estudo da viabilidade econ?mica desses campos. No cen?rio 4 foi definido uma produ??o de 4,0 m?/d de petr?leo, que ? uma produ??o m?dia esperada por v?rios desses campos, cujo o valor m?nimo do barril de petr?leo, para viabilizar esse campo, foi de U$ 55,00, valor esse bem abaixo do que estar sendo praticado no mercado atualmente.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-22T16:06:10Z No. of bitstreams: 2 leandro_pereira_assis.pdf: 971825 bytes, checksum: 696c2fa6acf76fa7eff45d06d75bb3c2 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-22T16:54:12Z (GMT) No. of bitstreams: 2 leandro_pereira_assis.pdf: 971825 bytes, checksum: 696c2fa6acf76fa7eff45d06d75bb3c2 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2015-12-22T16:54:12Z (GMT). No. of bitstreams: 2 leandro_pereira_assis.pdf: 971825 bytes, checksum: 696c2fa6acf76fa7eff45d06d75bb3c2 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2012 / Objetivou-se, com o desenvolvimento deste trabalho, analisar os dados referentes ?s despesas, receitas e ?ndices zoot?cnicos provenientes de uma fazenda, referentes ao per?odo de janeiro de 2002 a dezembro de 2011. Realizou-se, tamb?m, a correla??o dos ?ndices econ?micos com os zoot?cnicos no per?odo estudado. Durante o estudo, buscou-se identificar os principais indicadores t?cnicos e econ?micos que mais afetam a atividade. Dos componentes do custo operacional efetivo, a alimenta??o e a m?o-de-obra foram aqueles com maiores representatividades. Na an?lise de regress?o linear simples, houve alta correla??o da produ??o de leite por hectare com a margem l?quida, indicando que alguns ?ndices zoot?cnicos como a produ??o total, produ??o m?dia por total de vacas e, principalmente, a produ??o por hectare/ano, influenciam mais o resultado da atividade do que o pre?o do leite pago ao produtor. As receitas oriundas da venda de leite n?o foram suficientes para cobrir nem os custos operacionais efetivos. No entanto, as receitas do leite, juntamente com as vendas de animais e subprodutos, permitiram, na m?dia dos dez anos, uma margem l?quida negativa. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of the development of this work is to analyze the data on expenditure, revenue and indexes from a farm, for the period from January 2002 to December 2011. Held, also, the correlation of economic and zootechnical indexes from the study period. During the study, we pursued to identify the main technical and economic indicators that most affect the activity. From components of effective operational cost, feeding and manpower were those with higher representativeness. In simple linear regression analysis, there was a high correlation of milk production per hectare with net margin, indicating that some indexes such as total output, total average production per cow, and especially the production per hectare / year, had more influence on the result of the activity rather than the milk price paid to producers. Revenues from the sale of milk were not enough to cover even the actual operating costs. However, revenue from milk, along with sales of animals and byproducts, allowed, at the average of ten years, a negative net margin.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-04-02T15:25:24Z No. of bitstreams: 1 GessicaVitalinoDiogenes_DISSERT.pdf: 1248738 bytes, checksum: e476ecb1b8658f8ea67d0b16cf8f8a41 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-04-06T12:44:43Z (GMT) No. of bitstreams: 1 GessicaVitalinoDiogenes_DISSERT.pdf: 1248738 bytes, checksum: e476ecb1b8658f8ea67d0b16cf8f8a41 (MD5) / Made available in DSpace on 2018-04-06T12:44:43Z (GMT). No. of bitstreams: 1 GessicaVitalinoDiogenes_DISSERT.pdf: 1248738 bytes, checksum: e476ecb1b8658f8ea67d0b16cf8f8a41 (MD5) Previous issue date: 2017-12-22 / A coturnicultura de corte vem se tornando uma atividade altamente promissora no pa?s, se fazendo necess?ria a busca por alternativas para redu??o nos custos, otimizando a produ??o de carne aliado a sustentabilidade. Alguns produtos podem ser utilizados como melhoradores do desempenho, por?m, podem causar problemas na comercializa??o se distribu?dos em pa?ses mais exigentes. Uma alternativa seria o uso do extrato pirolenhoso (EP), que ? um produto que atua como melhorador de desempenho natural por conter em sua composi??o compostos fen?licos, alde?dos e cetonas que tem propriedades bactericidas, antif?ngicas e antioxidantes. Desse modo, objetivou-se avaliar o desempenho e rendimento de carca?a de codornas europeias alojadas em dois tipos de cama suplementadas com extrato pirolenhoso. O experimento foi conduzido utilizando 400 codornas de corte de 1 a 42 dias, distribu?das em um delineamento inteiramente casualizado em esquema fatorial 5x2, com cinco n?veis de extrato pirolenhoso (0,0; 1,0; 1,5; 2,0 e 2,5%) e dois tipos de cama (nova e usada), totalizando 10 tratamentos e 4 repeti??es sendo 10 aves por unidade experimental, alojadas em boxes. As aves foram pesadas no inicio e no final do per?odo experimental para avalia??o dos par?metros de desempenho (ganho de peso (GP), consumo de ra??o (CR) e convers?o alimentar (CA)). Ao final do per?odo experimental, foram abatidas 8 aves de cada tratamento para avalia??o da carca?a (rendimento de carca?a (RQ) e peso dos ?rg?os). Foram avaliados ainda a analise econ?mica da utiliza??o do extrato na ra??o, atrav?s dos c?lculos de custo da ra??o, coeficiente operacional efetivo, receita bruta, margem bruta do coeficiente operacional efetivo, lucro operacional efetivo e ?ndice de lucratividade. Os n?veis de suplementa??o de extrato pirolenhoso utilizado nas ra??es, n?o influenciaram (P>0,05) o GP e CA das aves alojadas em cama nova. Para as codornas alojadas em cama usada, foi observado efeito linear para CR, GP e CA. Observou-se melhor RQ para as aves alojadas em cama nova quando comparadas as alojadas em cama usada. J? para o peso dos ?rg?os e a analise econ?mica, a inclus?o de EP na ra??o n?o foi observada efeito. Portanto, a inclus?o de at? 2,5% de extrato pirolenhoso na ra??o de codornas europeias alojadas em cama usada diminuiu o consumo sem alterar o ganho de peso melhorando a convers?o alimentar. Por?m quando alojadas em cama nova apresentaram melhor rendimento de carca?a. Em rela??o ao peso dos ?rg?os e viabilidade econ?mica, n?o foram encontradas diferen?as tanto de aves alojadas em cama nova quanto em aves alojadas em cama usada. / Cutting coturniculture has become a highly promising activity in the country, making it necessary to search for alternatives to reduce costs, optimizing meat production together with sustainability. For example, the use of pyrolignose extract (EP), which is a product that acts as a natural performance enhancer because it contains in its composition phenolic compounds, aldehydes and ketones that have bactericidal, antifungal and antioxidant properties. The objective of this study was to evaluate the performance, carcass yield and economic viability of European quails housed in two types of litter (new and used) supplemented with pyroligneous extract. The experiment was conducted using 400 shear quails from 1 to days, distributed in a completely randomized design in a 5x2 factorial scheme, with five levels of pyrolignous extract (0.0, 1.0, 40 1.5, 2.0 and 2.5%) and two types of bed, totaling 10 treatments and 4 replicates, 10 birds per experimental unit, housed in pits. The birds were weighed at the beginning and at the end of the experimental period to evaluate the performance parameters (weight gain (GP), feed intake (CR) and feed conversion (CA)). At the end of the experimental period, 8 birds of each treatment were slaughtered for carcass evaluation (carcass yield (CR) and body weight). The economic analysis of the utilization of PE in the ration was also performed through ration cost calculations, effective operating coefficient, gross revenue, gross margin of the effective operating coefficient, effective operating profit and profitability index. There was an interaction effect between PE and bed type on CR. The levels of PS supplementation used in the diets did not influence the performance variables of birds housed in a new bed. For quails housed in bed used, a decreasing linear effect was observed for CR and CA and increasing linear effect for GP. A better CR was observed for birds housed in a new bed when compared to those housed in a used bed. For birds housed in bed used, the RC showed quadratic effect with a better level of 2.5%. There was an interaction effect between EP and bed type for gizzard weight, where the non-EP diet of the birds housed in bed used presented a higher weight of this organ, for other body weights and economic analysis, the inclusion of PE in the diet did not influence these parameters. It is therefore recommended that up to 2.5% of the pyroligneous extract be included in the European quail ration from 1 to 42 days old regardless of the type of litter used at breeding.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-01-15T21:53:38Z No. of bitstreams: 1 IzabelleVirginiaLopesDePaiva_DISSERT.pdf: 2707348 bytes, checksum: 0ca95ec4431b14103b77ba2857a54ba1 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-01-17T16:11:07Z (GMT) No. of bitstreams: 1 IzabelleVirginiaLopesDePaiva_DISSERT.pdf: 2707348 bytes, checksum: 0ca95ec4431b14103b77ba2857a54ba1 (MD5) / Made available in DSpace on 2018-01-17T16:11:07Z (GMT). No. of bitstreams: 1 IzabelleVirginiaLopesDePaiva_DISSERT.pdf: 2707348 bytes, checksum: 0ca95ec4431b14103b77ba2857a54ba1 (MD5) Previous issue date: 2016-07-28 / O modelo de produ??o observado na ind?stria da constru??o civil utiliza em boa parte recursos naturais n?o renov?veis e ? respons?vel pela gera??o de uma grande quantidade de res?duos. Uma das formas de amenizar os impactos desses res?duos ? a reciclagem. Diante deste cen?rio, o objetivo deste trabalho ? propor a cria??o de uma usina de reciclagem de Res?duos da Constru??o Civil na perspectiva da simbiose industrial, avaliando a sua viabilidade econ?mica e ambiental. A pesquisa ? um Estudo de caso de car?ter explorat?rio, de natureza aplicada, com uma abordagem quanti-qualitativa. Um question?rio estruturado foi aplicado junto ?s empresas da constru??o civil da grande Natal, cadastradas no SINDUSCON-RN, com o objetivo de conhecer a quantidade m?dia de res?duos gerada pelas construtoras, o destino dado aos res?duos e se h? separa??o dos res?duos na obra antes da destina??o. Com isso foi poss?vel estimar o tamanho da usina e seu volume de produ??o, para, assim, dimensionar os impactos ambientais envolvidos e estimar os custos e despesas, fatores essenciais para realiza??o das an?lises de viabilidade. Utilizou-se o Estudo de Impacto Ambiental (EIA) para a avalia??o ambiental e os m?todos de Valor Presente L?quido (VPL), Taxa Interna de Retorno (TIR) e payback para a realiza??o da avalia??o econ?mica. O trabalho concluiu que a implanta??o da usina de reciclagem de res?duos da constru??o civil na regi?o metropolitana de Natal ? vi?vel tanto ambiental quanto economicamente, bem como a organiza??o de forma simbi?tica das empresas ? vista de forma positiva no sentido de incentivar a separa??o dos res?duos na obra e, consequentemente, melhorar a qualidade do agregado reciclado produzido. Al?m disso, o reaproveitamento de res?duos pelas pr?prias construtoras reduz a extra??o de recursos naturais n?o renov?veis e a gera??o de novos res?duos, contribuindo para a diminui??o do impacto ambiental gerado por este setor. / The production model observed in the construction industry uses largely non-renewable natural resources and is responsible for generating a large number of waste. One way to mitigate the impacts of this waste is recycling. In this scenario, the objective of this study is to propose the creation of a construction waste recycling plant from the perspective of industrial symbiosis, assessing their economic and environmental viability. The research is an exploratory case study of applied nature, with a quantitative and qualitative approach. A structured questionnaire was administered with the companies of civil construction of the great Natal registered in SINDUSCON-RN, in order to know the average amount of waste generated by construction companies, the destination of the waste and if there is separation of waste in the work before allocation. Thus, it was possible to estimate the size of the plant and its production volume, to thereby scale the environmental impacts involved and estimate the costs and expenses, essential factors for carrying out feasibility studies. We used the Environmental Impact Assessment (EIA) for environmental assessment and methods of Net Present Value (NPV), Internal Rate of Return (IRR) and payback for the realization of economic evaluation. The study concluded that the implementation of the construction waste recycling plant in the metropolitan region of Natal is viable environment as much as economically, as well as the organization symbiotically of companies is seen in a positive way to encourage the separation of waste at work and, consequently, improve the quality of the recycled aggregate produced. In addition, the reuse of waste by own construction companies reduces the extraction of non-renewable natural resources and the generation of new waste, contributing to the reduction of the environmental impact generated by this sector.

Submitted by M?rden L?les (marden.inacio@ufvjm.edu.br) on 2016-07-22T18:02:16Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Celio_Roberto_Oliveira.pdf: 908844 bytes, checksum: 19ce8a2fa0261c7f9fa082a17eab4775 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2016-07-25T17:30:10Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Celio_Roberto_Oliveira.pdf: 908844 bytes, checksum: 19ce8a2fa0261c7f9fa082a17eab4775 (MD5) / Made available in DSpace on 2016-07-25T17:30:10Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Celio_Roberto_Oliveira.pdf: 908844 bytes, checksum: 19ce8a2fa0261c7f9fa082a17eab4775 (MD5) Previous issue date: 2015 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Objetivou-se, com esse trabalho, analisar os dados referentes ?s despesas, receitas e ?ndices zoot?cnicos provenientes de uma fazenda no norte do estado de Minas Gerais durante os anos de 2002 a 2012, al?m de correlacionar os ?ndices econ?micos com os zoot?cnicos. Nesse per?odo, analisou-se tamb?m os principais indicadores t?cnicos e econ?micos que mais afetaram a atividade. A m?o de obra e a alimenta??o foram os componentes do custo operacional efetivo com maiores representatividades. Na an?lise da correla??o dos ?ndices t?cnicos com os econ?micos, a rela??o matriz por funcion?rio apresentou uma maior correla??o, indicando que quando maior for essa rela??o, consequentemente maior ser?o a lucratividade e rentabilidade I, que leva em considera??o a margem l?quida. No entanto, as receitas do leite, juntamente com as vendas de animais e subprodutos, permitiram, na m?dia dos 11 anos, uma margem l?quida positiva, indicando a perman?ncia do produtor no m?dio e longo prazo. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2015. / ABSTRACT The objective of this study was to analyze the details of the costs, revenues and performance parameters from a farm in the northern state of Minas Gerais during the years 2002-2012, thus analyzing the correlation of economic indicators with husbandry. During this period, it is also analyzed the main technical and economic indicators that affect the activity. The labor and food were the components of the effective operational cost with greater representativeness. In the correlation analysis of the technical indexes with the economic, the relationship matrix per employee showed a higher correlation, indicating that when higher this ratio thus increased profitability and profitability first, which takes into account the net margin. However, revenues from milk, along with sales of animals and by-products allowed on average 11 years, a positive net margin, indicating the producer of on average and long term.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-01-23T14:27:43Z No. of bitstreams: 1 TamyrisThaiseCostaDeSouza_TESE.pdf: 2326336 bytes, checksum: d59b4b1968aa5a394e4f90ffa36135cc (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-01-25T11:49:52Z (GMT) No. of bitstreams: 1 TamyrisThaiseCostaDeSouza_TESE.pdf: 2326336 bytes, checksum: d59b4b1968aa5a394e4f90ffa36135cc (MD5) / Made available in DSpace on 2018-01-25T11:49:52Z (GMT). No. of bitstreams: 1 TamyrisThaiseCostaDeSouza_TESE.pdf: 2326336 bytes, checksum: d59b4b1968aa5a394e4f90ffa36135cc (MD5) Previous issue date: 2017-10-11 / M?todos de recupera??o avan?ada de petr?leo s?o utilizados com o objetivo de aumentar a produtividade de reservat?rios nos quais, os m?todos convencionais s?o pouco eficientes, ou mesmo como alternativa inicial para produ??o. Dentre esses m?todos, existem os m?todos t?rmicos, misc?veis e qu?micos. A utiliza??o dos m?todos qu?micos de recupera??o avan?ada atua na altera??o de propriedades f?sico-qu?mica rocha/fluido, diminuindo a satura??o residual de ?leo e aumentando o deslocamento de ?leo no meio poroso. A inje??o de fluidos qu?micos, como solu??o de pol?mero, solu??o de tensoativo e microemuls?o, busca aumentar a viscosidade de fluido injetado, diminuir a tens?o interfacial e aumentar a miscibilidade entre o fluido injetado e o ?leo retido. Estudos nessa ?rea mostram que fluidos qu?micos s?o considerados uma alternativa eficaz na produ??o de petr?leo ap?s a utiliza??o de ?gua ou g?s como fluido de inje??o. Neste trabalho foi avaliado a utiliza??o de fluidos qu?micos (solu??o de tensoativo e microemuls?o) na recupera??o avan?ada de petr?leo (EOR) com a Ultramina NP200 como tensoativo. Os sistemas microemulsionados foram compostos por: Ultramina NP200; n-Butanol; querosene e ?gua de abastecimento local. Os sistemas microemulsionados (SM) foram caracterizados por medidas de di?metro de part?cula, tens?o superficial, tens?o interfacial e viscosidade. Nos testes de EOR, avaliou-se a influ?ncia da concentra??o de tensoativo injetado e a forma como a tens?o superficial, interfacial e a viscosidade influenciam na recupera??o de ?leo cru (29? API). A utiliza??o de solu??o de Ultramina NP200 conseguiu aumentar a capacidade de deslocamento de petr?leo em rela??o a inje??o de salmoura. Por?m, a solu??o de tensoativo, apesar da alta concentra??o (25% m/m), obteve fator de recupera??o inferior quando comparado a microemuls?o, mesmo quando a concentra??o de mat?ria ativa ? baixa (1,0% - m/m). O fator de recupera??o aumentou com o aumento da concentra??o de tensoativo na microemuls?o, por?m esse crescimento foi significativo para a inje??o de SM com at? 6% (m/m) de tensoativo. Observou-se tamb?m que ? poss?vel alcan?ar resultados satisfat?rios de recupera??o injetando menores quantidades microemuls?o, seguida de inje??o de salmoura. A utiliza??o do sistema microemulsionado com 6% tensoativo (SM4) com vaz?o de 0,5 mL/min, chegou a recupera??o do ?leo in place de 24,1% (%OOIPA) e recupera??o total de 77,2% (%OOIPT). Na avalia??o econ?mica, foi observado que a utiliza??o de pequenos volumes de microemuls?o, com maior concentra??o de tensoativo, pode resultar em um projeto mais vi?vel, mediante an?lise do pre?o do barril de petr?leo. No cen?rio atual (50 USD/bbl) ? poss?vel alcan?ar uma taxa interna de retorno (TIR) de 27% por inje??o e 0,5Vp de SM3 e 2,5Vp de salmoura. / Enhanced oil recovery (EOR) methods are used to increase the productivity of reservoirs when water or gas injections are inefficient, or can be used as a initial alternative to production. EOR methods is classified in thermal, miscible and chemical. The use of chemical methods acts on the alteration of physicochemical rock / fluid properties, reducing the residual oil saturation and increasing the displacement of oil in the porous medium. Injection of chemical fluids, such as polymer solution, surfactant solution and microemulsion, seeks to increase the viscosity of injected fluid, decrease interfacial tension and increase miscibility between the injected fluid and the retained oil. Studies in this area show that chemical fluids are efficient alternative in the production of oil after the use of water or gas as an injection fluid. In this work the use of chemical fluids (surfactant and microemulsion solution) in the EOR with Ultramina NP200 as a surfactant was evaluated. Microemulsion systems are composed of: Ultramina NP200; n-Butanol; kerosene and local water supply. Microemulsion systems (SM) were characterized by measurements of droplet size, surface tension, interfacial tension and viscosity. In the EOR tests, the influence of the injected surfactant concentration and the way in which surface tension, interfacial and viscosity influence the recovery of crude oil (29? API) was evaluated. The use of Ultramina NP200 solution has been able to increase the capacity of displacement of petroleum in relation to the injection of brine. However, the surfactant solution, despite the high concentration (25% m / m), obtained a lower oil recovery when compared to the microemulsion, even when the active matter concentration is low (1.0% - m / m). The oil recovery increased with increasing surfactant concentration in the microemulsion, but this growth was significant for SM injection with up to 6% (m / m) of surfactant. It has also been observed that satisfactory results of %OOIPA can be achieved by injecting smaller amounts of microemulsion followed by injection of brine. The use of the microemulsified system with 6% surfactant (SM4) with a flow rate of 0.5 mL / min, reached the oil recovery in place of 24.1% (% OOIPA) and total recovery of 77.2% (% OOIPT). In the economic evaluation it was observed that the use of small volumes of microemulsion, with higher concentration of surfactant, can result in a more viable project, by analyzing the price of a barrel of oil.

Made available in DSpace on 2014-12-17T14:58:08Z (GMT). No. of bitstreams: 1 TherenceUMO_DISSERT.pdf: 1033747 bytes, checksum: bf9299db76fc37d4e897ab37dd524eec (MD5) Previous issue date: 2011-08-19 / This paper presents an analysis of technical and financial feasibility of the use of a solar system for water heating in a fictitious hotel located in the Northeast region. Thereunto it is used techniques of solar collectors? sizing and methods of financial mathematics, such as Net Present Value (NPV), Internal Rate of Return (IRR) and Payback. It will also be presented a sensitivity analysis to verify which are the factors that impact the viability of the solar heating. Comparative analysis will be used concerning three cities of distinct regions of Brazil: Curitiba, Bel?m and Jo?o Pessoa. The viability of using a solar heating system will be demonstrated to the whole Brazil, especially to the northeast region as it is the most viable for such an application of solar power because of its high levels of solar radiation. Among the cities examined for a future installation of solar heating systems for water heating in the hotel chain, Jo?o Pessoa was the one that has proved more viable. / Este trabalho apresenta uma an?lise da viabilidade financeira da utiliza??o de um sistema solar para aquecimento de ?gua em um hotel fict?cio na regi?o Nordeste, empregando para isso t?cnicas de dimensionamento de coletores solares e m?todos da Matem?tica Financeira, como Valor Presente L?quido (VPL), Taxa Interna de Retorno (TIR) e Payback. Ser? tamb?m apresentada uma an?lise de sensibilidade para verificar quais s?o os fatores que mais impactam na viabilidade do aquecimento solar, variando tamb?m a localidade do empreendimento para Curitiba e Bel?m, ser? demonstrada a viabilidade de utiliza??o de um sistema de aquecimento solar no Brasil, destacando-se a regi?o nordeste como a mais vi?vel para tal aplica??o da fonte solar em fun??o de seus altos ?ndices de radia??o solar global. Dentre as cidades analisadas para futura instala??o de sistemas de aquecimento solar para aquecimento de ?gua na rede hoteleira Jo?o Pessoa foi a que se mostrou mais vi?vel.