Qualificação de edifícios residenciais verticais em Natal/RN à luz do regulamento técnico da qualidade para o nível de eficiência energética de edificações residenciais (RTQ-R)

The goal of the research was to investigate the energy performance of residential vertical buildings envelope in the hot and humid climate of Natal, capital of Rio Grande do Norte, based in the Technical Regulation of Quality for Energy Efficiency Level in Residential Buildings (RTQ -R), launched in 2010. The study pretends to contribute to the development of design strategies appropriate to the specific local climate and the increasing of energy efficiency level of the envelope. The methodological procedures included the survey in 22 (twenty two) residential buildings, the formulation of representative prototypes based on typological and constructives characters researched and the classification of the level of energy efficiency in the envelopment of these prototypes, using as a tool the prescriptive method of the RTQ-R and the parametric analyzes from assigning different values of the following variables: shape of the pavement type; distribution of housing compartments; orientation of the building; area and shading of openings; thermal transmittance, and solar absorptance of opaque materials of the frontage in order to evaluate the influence of these on the envelopment performance. The main results accomplished with this work includes the qualification of vertical residential buildings in Natal/RN; the verification of the adequacy of these buildings to local climate based from the diagnosis of the thermal energy of the envelopment performance, the identification of variables with more significant influence on the prescriptive methodology of RTQ-R and design solutions more favorable to obtain higher levels energy efficiency by this method. Finally, it was verified, that some of these solutions proved contradictory in relation to the recommendations contained in the theoretical approaches regarding environmental comfort in hot and humid weather, which indicates the need for improvement of the prescriptive method RTQ-R and further research on efficient design solutions

Qualificação de edifícios residenciais verticais em Natal/RN à luz do regulamento técnico da qualidade para o nível de eficiência energética de edificações residenciais (RTQ-R)

The goal of the research was to investigate the energy performance of residential vertical buildings envelope in the hot and humid climate of Natal, capital of Rio Grande do Norte, based in the Technical Regulation of Quality for Energy Efficiency Level in Residential Buildings (RTQ -R), launched in 2010. The study pretends to contribute to the development of design strategies appropriate to the specific local climate and the increasing of energy efficiency level of the envelope. The methodological procedures included the survey in 22 (twenty two) residential buildings, the formulation of representative prototypes based on typological and constructives characters researched and the classification of the level of energy efficiency in the envelopment of these prototypes, using as a tool the prescriptive method of the RTQ-R and the parametric analyzes from assigning different values of the following variables: shape of the pavement type; distribution of housing compartments; orientation of the building; area and shading of openings; thermal transmittance, and solar absorptance of opaque materials of the frontage in order to evaluate the influence of these on the envelopment performance. The main results accomplished with this work includes the qualification of vertical residential buildings in Natal/RN; the verification of the adequacy of these buildings to local climate based from the diagnosis of the thermal energy of the envelopment performance, the identification of variables with more significant influence on the prescriptive methodology of RTQ-R and design solutions more favorable to obtain higher levels energy efficiency by this method. Finally, it was verified, that some of these solutions proved contradictory in relation to the recommendations contained in the theoretical approaches regarding environmental comfort in hot and humid weather, which indicates the need for improvement of the prescriptive method RTQ-R and further research on efficient design solutions

Análise da concepção arquitetural à luz da arquiteturologia: um estudo da produção de edifícios de uso não-residencial do arquiteto João Maurício Fernandes de Miranda, entre 1961 e 1981

This study explores the architectural conception process using the Architecturologie as an instrument of analysis, based on Enseigner la Conception Architecturale (2000), developed by Boudon - architect, lecturer and French researcher. It begins with the selection of local architect´s works, João Maurício Fernandes de Miranda, which resulted in six non residential projects developed between 1961 and 1981. Architectural readings were developed, with emphasis in the identification of architecturological scales, their functions, relationship and modality of occurrence

Indicações para o projeto arquitetônico de edifícios multifamiliares: uma análise pósocupação em Natal/RN

Confirming the Brazilian tendency in the field, the multifamily vertical condominium habitats in Natal are defined as buildings with three or more floors which have been an increasingly used solution. In the mentioned project, the connection between the projectarchitects and the user/ buyers are spread out, by which the first people conceive the realestate property as a creation for the market and not the individual client in specific. Such situation along with technical and financial limitations of the project lead to the adoption of standard solutions to be utilized by clients with different profiles. Besides that, there are various legal and urban parameters by the City Director Plan showing elements of great influence in the final solution adopted by the mentioned edifices. Moving to this subject in general, this project is focused on the case study of the Ed. Ville de Montpellier, having as a base of Post Occupancy Evaluation (POE), considered an efficient tool to analyze and keep up with the progress of the construction of the building, including technical approvals, the application of surveys with the local residents and the creation of informal interviews. The data shows that with time some items that initially motivated the acquisition of the realestate property (with a social common area) move to being less valued, and that the residents quickly alter the pre constructed space, thus seeking to alter the property in a more personal and conforming manner. The possibility of a new emphasis for projects on the mentioned space should also be in discussion, the created project calls for the attention of projected conceptual aspects and interdependence within project and construction which permits the indication of some recommendations for the projection of multifamily residential buildings within the studied realm

Simulação computacional como ferramenta de auxílio ao projeto: aplicação em edifícios naturalmente ventilados no clima de Natal/RN

Natural air ventilation is the most import passive strategy to provide thermal comfort in hot and humid climates and a significant low energy strategy. However, the natural ventilated building requires more attention with the architectural design than a conventional building with air conditioning systems, and the results are less reliable. Therefore, this thesis focuses on softwares and methods to predict the natural ventilation performance from the point of view of the architect, with limited resource and knowledge of fluid mechanics. A typical prefabricated building was modelled due to its simplified geometry, low cost and occurrence at the local campus. Firstly, the study emphasized the use of computational fluid dynamics (CFD) software, to simulate the air flow outside and inside the building. A series of approaches were developed to make the simulations possible, compromising the results fidelity. Secondly, the results of CFD simulations were used as the input of an energy tool, to simulate the thermal performance under different rates of air renew. Thirdly, the results of temperature were assessed in terms of thermal comfort. Complementary simulations were carried out to detail the analyses. The results show the potentialities of these tools. However the discussions concerning the simplifications of the approaches, the limitations of the tools and the level of knowledge of the average architect are the major contribution of this study

Estudo do resíduo fosfogesso na formulação de uma pasta para revestimento interno de edifícios

Universidade Federal do Rio Grande do Norte

Desenvolvimento de metodologia para avaliação de desempenho ambiental em edifícios adaptada à realidade do Nordeste brasileiro

This research refers to the production of green buildings, defined, mainly, based on the use of sources of alternative energies, smaller emission of pollutant, use of recyclable materials, systems of recycling of the waters, maximization of the natural illumination, preservation of green areas or native, and appropriate quality of the internal air. From the conception of those buildings, it appears the needs of evaluating them, creating the methodologies for the evaluation of environmental performance of buildings. In that way, this work can be divided in two moments: the first one when it identifies the methodologies for the evaluation of environmental performance for buildings existents in the literature, defining their categories, criteria and sub-criteria to be appropriate to the reality of the Brazilian Northeast; and the second one when starting from the analysis of the systems of existent evaluation. It defines a methodological base and it generates a new evaluation system, denominated MEDACNE (Methodology of Evaluation of Environmental Acting for Construction in the Northeast). In that moment, the process of framing of the section of the building site is verified under the maintainable optics, stimulated mainly by the pressures of the society - conferences, protocols and agreements. Finally, the proposed methodology was applied in a case study, a residential building, called Maria José Gurgel , located in Natal-RN, Brazil, for its validation. This methodological proposition should increase the patterns environmental places for the production of new buildings, and it will be a reference guide for architects, engineers and planners to develop their constructions considering the criteria of the sustainability. This study made use of bibliographical research in books and specialized magazines and the analysis of the data was realized in an interpretative way

Impacto do abastecimento irregular de água nos altos índices de dengue

Dengue fever is an infectious disease that causes thousands of deaths each year in Brazil and other tropical countries. This work demonstrates that the irregularity in the supply of water by public water supply systems is a major factor that contributes to the proliferation of breeding sites of the mosquito that transmits dengue, due to the impossibility of removing water storage tanks. 31 points in the water supply network in thirteen districts of Natal, Brazil, were monitored by the installation of pressure gauges type Datalogger. The data about pressure showed deficiency in water supplies in many neighborhoods, forcing residents to accumulate water in tanks at ground level. In addition, It was observed that in neighborhoods with regular water supply, Infestation Index per type of container (ITR) of type A2 (Deposit ground level) was 0.00% and where there were failures in the supply of water , the ITR was high (above 50%). We believe that policies to combat dengue in Brazil should be reassessed so that more resources can be directed to the improvement of water supply systems and supply companies should be blamed for the problem too

Retrofit energético em edifícios de interesse histórico estudos de casos - edifícios modernistas em Natal

This paper addresses the theme of retrotif applied to buildings that belong to the modernist architectural production of historical interest located in the urban area of Natal . The overall objective is to identify and harmonize procedures for retrofit and architectural heritage preservation using elements of constructive analysis of expression and Benefit Cost Ratio ( BCR ) parameters established by the National Electric Energy Agency - ANEEL . The hypothesis put forward is that by stimulating the projetual year analysis , retrofit interventions , it is possible to obtain better results with projects RCB addressing the issues of preservation of architectural heritage . For both flow analysis of process solutions and proposals for action of elements and systems that seek to improve the energy performance of the building , restoring or preserving the architectural elements were developed . The proposed interventions undergo performance through computer simulations of systems such as DesignBuilder, Solar and Sun Tool. The energy results were converted to the analysis of RCB parameter and compared to the constructive expression of the project because the prenatal and intervention. From the results , a plot was constructed which results in a comparison between the RCB and the constructive expression of the simulated interventions

Análise da concepção arquitetural à luz da arquiteturologia: um estudo da produção de edifícios de uso não-residencial do arquiteto João Maurício Fernandes de Miranda, entre 1961 e 1981

This study explores the architectural conception process using the Architecturologie as an instrument of analysis, based on Enseigner la Conception Architecturale (2000), developed by Boudon - architect, lecturer and French researcher. It begins with the selection of local architect´s works, João Maurício Fernandes de Miranda, which resulted in six non residential projects developed between 1961 and 1981. Architectural readings were developed, with emphasis in the identification of architecturological scales, their functions, relationship and modality of occurrence

Indicações para o projeto arquitetônico de edifícios multifamiliares: uma análise pósocupação em Natal/RN

Confirming the Brazilian tendency in the field, the multifamily vertical condominium habitats in Natal are defined as buildings with three or more floors which have been an increasingly used solution. In the mentioned project, the connection between the projectarchitects and the user/ buyers are spread out, by which the first people conceive the realestate property as a creation for the market and not the individual client in specific. Such situation along with technical and financial limitations of the project lead to the adoption of standard solutions to be utilized by clients with different profiles. Besides that, there are various legal and urban parameters by the City Director Plan showing elements of great influence in the final solution adopted by the mentioned edifices. Moving to this subject in general, this project is focused on the case study of the Ed. Ville de Montpellier, having as a base of Post Occupancy Evaluation (POE), considered an efficient tool to analyze and keep up with the progress of the construction of the building, including technical approvals, the application of surveys with the local residents and the creation of informal interviews. The data shows that with time some items that initially motivated the acquisition of the realestate property (with a social common area) move to being less valued, and that the residents quickly alter the pre constructed space, thus seeking to alter the property in a more personal and conforming manner. The possibility of a new emphasis for projects on the mentioned space should also be in discussion, the created project calls for the attention of projected conceptual aspects and interdependence within project and construction which permits the indication of some recommendations for the projection of multifamily residential buildings within the studied realm

Simulação computacional como ferramenta de auxílio ao projeto: aplicação em edifícios naturalmente ventilados no clima de Natal/RN

Natural air ventilation is the most import passive strategy to provide thermal comfort in hot and humid climates and a significant low energy strategy. However, the natural ventilated building requires more attention with the architectural design than a conventional building with air conditioning systems, and the results are less reliable. Therefore, this thesis focuses on softwares and methods to predict the natural ventilation performance from the point of view of the architect, with limited resource and knowledge of fluid mechanics. A typical prefabricated building was modelled due to its simplified geometry, low cost and occurrence at the local campus. Firstly, the study emphasized the use of computational fluid dynamics (CFD) software, to simulate the air flow outside and inside the building. A series of approaches were developed to make the simulations possible, compromising the results fidelity. Secondly, the results of CFD simulations were used as the input of an energy tool, to simulate the thermal performance under different rates of air renew. Thirdly, the results of temperature were assessed in terms of thermal comfort. Complementary simulations were carried out to detail the analyses. The results show the potentialities of these tools. However the discussions concerning the simplifications of the approaches, the limitations of the tools and the level of knowledge of the average architect are the major contribution of this study

Estudo do resíduo fosfogesso na formulação de uma pasta para revestimento interno de edifícios

Universidade Federal do Rio Grande do Norte