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Arborização na cidade de Campinas/SP- percepção e conforto / Street trees in the city of Campinas/SP - comfort and perceptionLéa Yamaguchi Dobbert 13 February 2015 (has links)
A influência benéfica de áreas verdes no conforto humano em áreas urbanas tem sido reconhecida por estudos de diferentes campos do conhecimento. Áreas verdes e arborização bem planejada constituem importantes recursos para melhorar a qualidade do ambiente ao promover bem-estar físico e mental aos seus usuários. Avaliar o grau de interferência proporcionado pela arborização no conforto térmico e bem-estar da população foi o objetivo principal do presente estudo. O índice de floresta urbana (IFU) avaliou a interferência da quantidade de cobertura arbórea em quatro áreas da cidade de Campinas/SP/Brasil em relação às condições de conforto térmico. Para tanto, foram utilizados índices de avaliação de conforto térmico (PMV Predicted Mean Vote e PET- Physiologically Equivalent Temperature) obtidos por meio do modelo Ray Man Pro.Questionários aplicados aos usuários das áreas de estudo possibilitaram verificar se os resultados obtidos por meio dos índices PMV e PET correspondiam à real sensação de conforto térmico relatada pelos entrevistados.Simulações com o uso do programa ENVI-met v. 3.1 foram realizadas a fim de observar as interferências microclimáticas causadas pela inserção de vegetação no meio urbano. A percepção do usuário das áreas de estudo em relação à arborização urbana também foi identificada por meio de questionários. Essa pesquisa permitirá no futuro, a partir dos resultados levantados, construir um instrumento para ser incorporado no plano diretor de arborização urbana, possibilitando urbanistas e profissionais, que atuam de forma direta ou indireta no planejamento das cidades, inspecionar e analisar o conforto térmico e a qualidade de vida no meio urbano, tendo em vista a valorização e adequação da arborização viária em seus projetos. / The benefits of green urban area on human comfort have been recognized by studies performed in different knowledge fields. Green areas and urban forest planning are important tool to improve the quality of the urban environment by promoting physical and mental wellbeing to its users. The main goal of the present study is to assess the interference promoted by green areas in the welfare and thermal comfort of the urban population. The Urban Forest Index (IFU) evaluated the interference of the amount of trees in four areas of the city of Campinas, in the state of São Paulo, Brazil in relation to the conditions for thermal comfort. For this purpose, comfort indices have been used for evaluating thermal comfort (PMV-Predicted Mean Vote and PET-Physiologically Equivalent Temperature), obtained by the RayMan model. Questionnaires applied to the users on these study areas aimed to verify if the results of PET and PMV indices corresponded to the thermal sensation by respondents. Simulations using the ENVI-met program v 3.1 were conducted to observe the interference on microclimate due to the presence of vegetation in the urban environment. Questionnaires were also used to assess the perception of users on urban street trees. In the future, results obtained in this study will allow the building of an instrument, which could be included in the urban forest master plan. As a result, urban planners and other professionals who work directly or indirectly in the planning of cities will be able to inspect and evaluate the thermal comfort and the welfare of their citizens, considering the recovery and suitability of urban street trees in their projects.
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Conforto térmico e eficiência energética em hotéis econômicos / Thermal comfort and energy efficiency in Budget HotelsAnarrita Bueno Buoro 17 March 2008 (has links)
Este trabalho busca avaliar a eficiência energética e o conforto, em ambiente climatizado artificialmente, dos Hotéis Econômicos de redes internacionais em São Paulo. A avaliação levada a cabo concentrou-se nas unidades habitacionais (UH) desses hotéis, principal produto oferecido por eles, possuidoras de sistema de ar condicionado (SAC), apesar das condições climáticas e das características do uso não determinarem essa necessidade. Com base nos levantamentos sobre as características dos Hotéis Econômicos, foi escolhido um hotel de uma rede internacional em São Paulo como estudo de caso. Nele, avaliou-se o desempenho térmico por meio de medições de temperatura e umidade relativa do ar em duas UH, durante cinco dias. As características físicas desse hotel foram utilizadas como modelo-base para as simulações computacionais realizadas no software TAS NG (2005). A partir dos resultados obtidos nas medições, definiram-se os critérios que seriam utilizados nas variações do modelo paramétrico, resultando em um total de sete cenários, com diferentes características como: vidros, cortina interna, taxa de ventilação e período determinado para ventilação. Levando-se em conta as condições climáticas da cidade de São Paulo e as características físicas e ocupacionais dos apartamentos, verificou-se que é possível obter conforto térmico sem o uso de SAC. Nessas condições, utilizou-se como critério de avaliação o modelo adaptativo da Norma ASHRAE 55 (2004). Os dados dos dias mais representativos de verão e inverno forma utilizados na análise dos ganhos de calor. Foi também avaliado, para o período de um ano, o consumo de energia elétrica do SAC, para resfriamento e aquecimento. Os resultados obtidos auxiliaram na proposição de recomendações de projeto para essa tipologia, buscando soluções que aprimoram o aproveitamento das condições naturais favoráveis para a obtenção de conforto térmico, possibilitando a redução do consumo de energia decorrente do SAC nestes ambientes. Para ilustrar algumas recomendações foram feitos estudos preliminares para as UH e para o pavimento tipo, considerando a integração do SAC com soluções de projeto de arquitetura que favoreçam o melhor desempenho energético de Hotéis Econômicos ou de qualquer categoria. / This work aims to evaluate the energy efficiency and comfort level, in airconditioned environments of budget hotels, from international chains, in São Paulo, Brazil. The evaluation was directed to the apartments which are the hotels main product featuring air conditioning, even though the climate conditions and usage profile dont determine its need. One hotel from an international chain was chosen as a case study based on research of budget hotels main features. The hotel had its thermal performance evaluated through air temperature and humidity measurements, in two apartments, for five days. Its physical characteristics were inputted into the TAS NG (2005) software as a base model for simulations. The measurements results defined the criteria used in the parametric model, resulting in a total of seven scenarios with different characteristics such as glass, internal shades, ventilating rates and period. Considering São Paulos climatic conditions, the physical and occupational characteristics of the apartments, it was verified that it is possible to reach thermal comfort without the use of air conditioning. The evaluating criterion used in these conditions was an adaptive model from the ASHRAE 55 (2004) Norm. Data from the most representative days of summer and winter were used in the analysis. There was also an evaluation of the energy consumption of the air condition- ing system, used for cooling and heating purposes, for a period of one year. The results favored the proposal for project recommendations for this typology, seeking solutions to improve the capacity to harness the favorable natural conditions to obtain thermal comfort, allowing for energy consumption reduction due to air conditioning. To illustrate the recommendations some preliminary studies were prepared for the apartments and pavement type, considering the integration of the air conditioning system with architectural design solutions that favor a better energy performance of budget hotels or of any other category.
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Conforto térmico nos edifícios das indústrias de calçados de Jaú / Thermal comfort in footwear industry from JaúPrado, Monica Faria de Almeida 25 April 2012 (has links)
Este trabalho aborda o desempenho térmico obtido em edifícios industriais do setor calçadista, perante a importância em obter condições ambientais favoráveis à execução das atividades através de uma arquitetura adequada ao contexto climático. Assim, o objetivo nesta pesquisa é avaliar as condições de conforto térmico oferecidas pelos edifícios das indústrias calçadistas do município de Jaú, um importante pólo industrial do setor no interior de São Paulo. Caracterizam-se as tipologias construtivas dos edifícios quanto à geometria, materiais e sistema de ventilação. As estratégias passivas para obtenção de conforto térmico nos galpões fabris são identificadas e avaliadas utilizando as recomendações presentes na NBR 15220. Para avaliar as condições de conforto térmico, foram medidas as variáveis ambientais, sendo que a temperatura foi analisada sob condições de aceitabilidade térmica, conforme estabelecido pela ASHRAE 55-2010. Para estimar a sensação térmica dos usuários, são utilizados os índices PMV e PPD. Também foi aplicado um questionário para verificar o nível de satisfação dos funcionários com o ambiente de trabalho. Os resultados apontam que a maioria dos edifícios apresenta uma tipologia semelhante, com geometria retangular e ventilação realizada através de esquadrias nas fachadas. A ausência de diversas estratégias passivas resulta em um edifício com baixa inércia térmica e vulnerável às condições climáticas externas, sendo que em períodos quentes a temperatura interna foi superior a 30ºC, e em períodos frios inferior a 15ºC. A sensação térmica dos usuários na maior parte do período do expediente corresponde ao desconforto térmico para o calor, principalmente no período vespertino, sendo que a porcentagem de insatisfeitos ultrapassa 80%. Deste modo, há necessidade de otimizar a adoção de estratégias passivas, para proporcionar melhores condições térmicas de trabalho. Para isto, são indicadas soluções simples, que propiciam melhorias ao desempenho térmico dos edifícios, exemplificando: o uso de sistemas que possibilitem o resfriamento evaporativo e ampliação das áreas de aberturas destinadas à ventilação do edifício. / This paper discusses the thermal performance obtained in industrial buildings in the footwear sector, given the importance of obtaining favorable environmental conditions for the execution of activities through an architecture suited to the climate context. Thus, the objective of this research is to evaluate the thermal comfort conditions provided by the buildings of the footwear industries of Jaú city, an important industrial pole. It is characterized the typologies of building\'s construction regarding its geometry, materials and ventilation system. The passive strategies for achieving thermal comfort in the factory sheds are identified and evaluated using the recommendations present in the NBR 15220. To evaluate the thermal comfort conditions it was measured the environmental variables, and the temperature was examined under conditions of thermal acceptability, as established by ASHRAE 55-2010. In order to estimate the thermal sensation of the users, the PMV and PPD indices were used. Also, a questionnaire was applied in order to check the level of employee satisfaction with the working environment. The results show that most of the buildings presents a typology similar with a rectangular geometry and ventilation obtained through frames at the facades. The absence of different passive strategies results in a building with a low thermal inertia and vulnerable to the external weather conditions, and in hot periods, the internal temperature was above 30°C, and during colder periods it was lower than 15°C. The thermal sensation of users in most of the period of the working shift matches the thermal discomfort to the heat, especially in the afternoon, and the percentage of discontentment exceeds 80%. This way, there is a need to optimize the adoption of passive strategies, to provide better thermal conditions of work. For this purpose, simple solutions that provide improvements to the thermal performance of buildings are given, examples: the use of systems which allows evaporative cooling and expansion of openings areas for the ventilation of the building.
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Creation of hot summer years and evaluation of overheating risk at a high spatial resolution under a changing climateLiu, Chunde January 2017 (has links)
It is believed that the extremely hot European summer in 2003, where tens of thousands died in buildings, will become the norm by the 2040s, and hence there is the urgent need to accurately assess the risk that buildings pose. Thermal simulations based on warmer than typical years will be key to this. Unfortunately, the existing warmer than typical years, such as probabilistic Design Summer Years (pDSYs) are not robust measures due to their simple selection method, and can even be cooler than typical years. This study developed two new summer reference years: one (pHSY-1) is suitable for assessing the occurrence and severity of overheating while the other (pHSY-2) is appropriate for evaluating the thermal stress. Both have been proven to be more robust than the pDSYs. In addition, this study investigated the spatial variation in overheating driven by variability in building characteristics and the local environment. This variation had been ignored by previous studies, as most of them either created thermal models using building archetypes with little or no concern about the influence of local shading, or assumed little variation in climate across a landscape. For the first time, approximately a thousand more accurate thermal models were created for a UK city based on the remote measurement including building characteristics and their local shading. By producing overheating and mortality maps this study found that spatial variation in the risk of overheating was considerably higher due to the variability of vernacular forms, contexts and climates than previously thought, and that the heat-related mortality will be tripled by the 2050s if no building and human thermal adaptations are taken. Such maps would be useful to Governments when making cost-effective adaptation strategies against a warming climate.
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Caractérisation des différences interindividuelles de jugement thermosensoriel à partir de mesures biophysiques cutanées / Characterization of interindividual differences of thermosensory judgment based on skin biophysical measurementsBigouret, Armelle 11 December 2012 (has links)
Les modèles actuels de prédiction de la sensation thermique et du confort thermique ainsi que les solutions visant à améliorer l’état de bien-être thermique des occupants d’un bâtiment sont insuffisants. Ils ne prennent pas assez en compte les différences interindividuelles de jugement thermosensoriel. Pourtant, ces différences, souvent associées à la sensibilité thermique de chaque individu, existent mais restent inexpliquées sur le plan physiologique. Ces travaux de thèse, qui se sont déroulés en deux étapes, ont pour objectif d'identifier les causes physiologiques potentielles des différences interindividuelles du ressenti thermique, à travers des expérimentations multiparamétriques basées sur des mesurées cutanées. Toutes les mesures ont été réalisées après 30 minutes d’acclimatation en environnement thermique contrôlé. La première étape, exploratoire, a permis d’analyser à la fois l’activité neurosensorielle, les propriétés thermo-vasculaires et les propriétés du film hydrolipidique cutané de deux groupes présentant des sensibilités au froid distinctes (selon leur sensation thermique déclarée). Ainsi, les expérimentations ont montré qu’il était plus pertinent d’analyser davantage les propriétés cutanées thermiques et hydriques (reliées aux mécanismes de thermorégulation) plutôt que l’activité neurosensorielle des volontaires pour caractériser les différences interindividuelles de jugement thermosensoriel. Elles ont également mis en évidence la nécessité de contrôler les facteurs non thermiques des environnements et de sélectionner rigoureusement les sujets. La deuxième étape s’est focalisée sur l’analyse des propriétés thermo-vasculaires et des propriétés du film hydrolipidique de deux groupes de sensibilité au froid. Pour cela, 13 femmes ont été confrontées à 6 environnements de températures modérées comprises entre 17°C et 30°C (avec 2 transitions chaudes et 2 transitions froides) et les groupes ont été construits à partir du degré de frilosité déclaré par les sujets. Des différences sur les paramètres cutanées ont alors pu être relevées entre les deux groupes. Le résultat le plus significatif est que les individus dits « frileux » présentent une activité microcirculatoire plus intense sur les joues avec une vasoconstriction plus forte au froid et une vasodilatation plus forte au chaud que l’autre groupe « non sensible au froid » (p=0,002 d’après le test de l’ANCOVA pour l’effet des groupes). De plus, il a été montré que l’approche multiparamétrique (introduction de variables non thermiques comme variables prédictives) ainsi que la prise en compte des sensibilités thermiques individuelles améliorent la prédiction du confort thermique surtout pour le groupe « frileux » (+ 6,4 %). / Current models for predicting thermal sensation and thermal comfort as well as the solutions to improve the state of thermal well-being of the occupants of a building are insufficient. They do not sufficiently take into account interindividual differences of thermosensory judgment. However, these differences, often associated with thermal sensitivity of each person, exist but remain unexplained physiologically. This work, divided into two stages, is intended to identify the potential physiological causes of interindividual differences of thermal feeling through multiparametric experiments based on skin measurements. All measurements were performed after 30 minutes of acclimatization in controlled environment. The exploratory phase allowed to analyze both neurosensory activity, thermo-vascular properties and properties of the skin hydrolipidic film of two groups with different cold sensitivities (depending on their declared thermal sensation). For example, experiments have shown that it was more appropriate to analyse thermal and hydric skin properties (related to thermoregulation mechanisms) rather than neurosensory activity of volunteers to characterize interindividual differences of thermosensory judgment. They have also highlighted the need to control the non-thermal factors of environments and rigorously select subjects. The second step focused on the analysis of thermo-vascular properties and properties of the hydrolipidic film of two groups of different cold sensitivity. Thirteen women have faced in 6 environments of moderate temperatures between 17 ° C and 30 ° C (with 2 warm transitions and 2 cold transitions). Groups were built according to their degree of cold sensitivity. Differences in skin parameters have been found between the two groups. The most significant result is that cold-sensitive individuals have a more intense microcirculatory activity on cheeks with a stronger vasoconstriction in cold environments and a stronger vasodilation in warm environement than the non cold-sensitive group (p = 0. 002 according to ANCOVA test for groups effect). In addition, it has been shown that the multi-parametric approach (introduction of non-thermal parameters as predictors) as well as taking into account individual thermal sensitivities improve the prediction of thermal comfort especially for the cold-sensitive group (+ 6.4%).
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以風環境與熱環境觀點模擬社區規劃之適宜性- 台北市健康社區為例 / CFD Simulation of The Suitability of Jian-Kang Community from The Perspective of Thermal and Wind Environment陳建宏, Chen, Chien Hung Unknown Date (has links)
林憲德等人於1999年提出台北夏季午夜之都市熱島強度為4.5℃,至2012年簡子翔等人所提出夏季白天最大熱島強度6.18℃、午夜4.38℃,可以發現台北市的高溫化現象並未有顯著的差異,甚至還新增加了多個新興熱區。
本研究以健康新城為研究對象,以實測方式、CFD電腦模擬方法,釐清社區建築環繞下,社區內的高溫化現象,並與社區外的街道環境比較溫度差異,評估熱舒適性。研究結果顯示,建築環繞下的社區內部(社區中庭),在日落後的確有高溫化現象,白天時則會因為各社區的遮蔽條件、綠化條件不同,而有不同程度的差別。而模擬結果亦顯示,社區開口條件、通風道配置不同,也會影響社區中庭與外部周邊街道環境之舒適性差異。
建議未來社區的建築規劃設計,除了增加綠化措施之外,尚能適度增加開放空間,增加通風性能;而公部門在訂定法定容積時,應考量都市環境因素(增加遮蔽、通風),酌以調整已達優良的都市實質環境。 / According to Urban Heat Island’s studies by Lin et al. (1999) and Chien et al. (2012), urban heat island intensity (UHIs) of Taipei didn’t get an obvious improvement from 1999 to 2012. UHIs of Taipei was 4.5℃ in the midnight in 1999, 4.38℃ in the midnight in 2012 and 6.18℃ in the daytimes in 2012. Obviously, there are several high temperature area appeared in the years.
This study tries to measure the thermal comfort between the area inside Jian-Kang community and the streets’ environment around Jian-Kang community. Furthermore, this study utilize CFD simulation that can help the study knows the reason effects thermal comfort. As the result of the study, the area inside Jian-Kang community has higher temperature after sunset. In the morning, it will have difference due to the shadow and green situation. Also, the simulation results show that the draft condition of the community will influence the thermal comfort.
In the future, this study suggests some strategy to have a better urban environment. First, increase much more greening measures. Second, preserve open spaces to improve the ventilation when deciding the community’s design. Third, consider the urban environmental factors when rule the building’s height.
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The Design of Home Energy-management Interfaces: Effects of Display Type on Thermostat Temperature SelectionStein, Joshua 28 November 2013 (has links)
This thesis explores home energy management (HEM), an emerging field for interface design and sustainability. Section 1 introduces HEM’s broader context. In Section 2, I review the literature surrounding HEM. Section 3 outlines the usability study on the ecobee Smart Thermostat, to evaluate the technology’s ease-of-use, and better understand users’ experience with current HEM technology. Section 4 describes a “Critical Making” workshop, where participants investigated HEM through material interaction and discussion. Section 5 describes and evaluates the potential design spaces gleaned from previous sections. In Section 6, I return to the literature to investigate key concepts underlying the design intervention for the chosen design space. Section 7 describes my design intervention and experimental evaluation. In Section 8, I present the study results, which suggest enhanced display labelling had a significant and directional effect on user-selected temperatures. In Section 9, I discuss these results, study limitations, and make conclusions and recommendations.
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The Design of Home Energy-management Interfaces: Effects of Display Type on Thermostat Temperature SelectionStein, Joshua 28 November 2013 (has links)
This thesis explores home energy management (HEM), an emerging field for interface design and sustainability. Section 1 introduces HEM’s broader context. In Section 2, I review the literature surrounding HEM. Section 3 outlines the usability study on the ecobee Smart Thermostat, to evaluate the technology’s ease-of-use, and better understand users’ experience with current HEM technology. Section 4 describes a “Critical Making” workshop, where participants investigated HEM through material interaction and discussion. Section 5 describes and evaluates the potential design spaces gleaned from previous sections. In Section 6, I return to the literature to investigate key concepts underlying the design intervention for the chosen design space. Section 7 describes my design intervention and experimental evaluation. In Section 8, I present the study results, which suggest enhanced display labelling had a significant and directional effect on user-selected temperatures. In Section 9, I discuss these results, study limitations, and make conclusions and recommendations.
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Couplage entre ventilation naturelle et stockage-déstockage d'énergie sensible en bâtiment : approche expérimentale et modélisation / On the coupling between natural ventilation and sensible energy charge and discharge in buildings : an experimental and modeling approachChen Austin, Miguel 20 September 2018 (has links)
Dans le cadre de la recherche de solutions visant à réduire les consommations d’énergie liées au rafraîchissement des bâtiments, une plateforme d’essais a été mise en place en 2012 à l’I2M et installée sur le site de l’IUT de l’Université de Bordeaux. Cette plateforme est issue d’un prototype de bâtiment BEPos, dénommée Sumbiosi, réalisée par un consortium rassemblé autour du campus de Bordeaux dans le cadre de sa participation à la compétition interuniversitaire du Solar Decathlon Europe 2012. Elle a notamment été conçue de façon à favoriser le stockage passif d’énergie diurne en hiver et le déstockage semi-passif d’énergie nocturne en été. Deux éléments principaux permettent a priori ces fonctions de stockage et déstockage passifs d’énergie : une dalle de forte masse thermique située du côté de la façade Sud vitrée du bâtiment, et des protections solaires et ouvertures pilotables sur les façades Sud, Nord et en lanterneau du bâtiment ; ces dernières assurent les trois principes fondamentaux en ventilation naturelle qui ont lieu grâce aux effets du tirage thermique et de la force du vent. L’objet des travaux menés actuellement ont pour objectif initial d’appréhender qualitativement le stockage-déstockage d’énergie dans la dalle, celle-ci étant soumise à des échanges radiatifs (extérieur et d’intérieur) et convectifs (générés par convection naturelle, forcée ou mixte). Ils visent par la suite à caractériser précisément et quantitativement le couplage entre ce stockage-déstockage, et les circulations d’air et apports radiatifs constatés. La mise en place d’une modélisation, reliant l’ensemble de ces paramètres est envisagée, dans le but d’avancer vers une loi de pilotage de ces éléments mobiles amenant à des conditions de confort internes au bâtiment optimales. Cette dernière doit nous permettre de montrer qu’un choix adéquat de stratégie de ventilation permet une minimisation de consommations électrique en évitant autant que possible le recours à la climatisation. Pour atteindre cet objectif, la démarche scientifique adoptée a consisté à mettre en évidence le rôle de la dalle en béton dans stockage/déstockage d’énergie thermique, sous l’effet de différents scénarii de ventilation naturelle de la plateforme. Cette dalle a été instrumentée, de façon discrète sur l’ensemble de sa surface, en termes de capteurs de flux de chaleur (Peltier et Captec), de températures (thermocouples T), et de la vitesse d’air proche de la dalle. Les premiers résultats, obtenus en période estivale, mettent clairement en évidence le couplage entre les phénomènes de stockage et déstockage d’énergie quotidiens et le cycle météorologique correspondant, ceci pour divers scénarii de pilotage des éléments mobiles de l’enveloppe du bâtiment (persiennes, ouvertures). / As part of the search for solutions to reduce the energy consumption related to the refreshment of buildings, a test platform was set up in 2012 at the I2M and installed on the IUT site of the " University of Bordeaux. This platform is the result of a prototype of a PEHs building called Sumbiosi, carried out by a consortium gathered around the Bordeaux campus as part of its participation in the inter-university competition of the Solar Decathlon Europe 2012. It was conceived in such a way as to favor the passive storage of diurnal energy in winter and the semi-passive destocking of nighttime energy in summer. Two main elements allow a priori these functions of passive storage and retrieval of energy: a slab of high thermal mass located on the side of the glazed south facade of the building, and solar protections and openings controllable on the facades South, North and skylight of the building ; the latter provide the three fundamental principles of natural ventilation, which take place through the effects of thermal draft and wind force. The object of the work currently carried out has the initial objective of qualitatively understanding the storage and de-stocking of energy in the slab, the latter being subjected to radiative (external and internal) and convective exchanges (generated by natural convection, forced or mixed). They are intended to characterize precisely and quantitatively the coupling between this storage and release, and the circulations of air and radiative contributions observed. The implementation of a modeling, linking all these parameters is envisaged, with the aim of advancing towards a law controlling these mobile elements leading to optimum internal comfort conditions for building. The latter must enable us to show that an adequate choice of ventilation strategy allows a minimization of electrical consumption by avoiding the use of air conditioning as much as possible. To achieve this objective, the scientific approach adopted consisted in highlighting the role of the concrete slab in the storage / destocking of thermal energy, under the effect of different scenarios of natural ventilation of the platform. This slab was instrumented, discretely over its entire surface, in terms of heat flux sensors (Peltier and Captec), temperatures (T thermocouples), and air speed close to the slab. The first results, obtained during the summer period, clearly show the coupling between the phenomena of daily energy storage and destocking and the corresponding meteorological cycle for various scenarios controlling the moving elements of the building envelope (shutters, openings).
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Adaptabilidade e características nutricionais de Caprinos Anglo Nubiano em diferentes temperaturas. / Nutritional characteristics and adaptability of Goats Anglo Nubian in diferent temperatures.ARAUJO, Tiago Gonçalves Pereira. 31 August 2018 (has links)
Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-08-31T17:44:45Z
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Previous issue date: 2013-10 / CNPq / Capes / O objetivo deste trabalho foi de determinar a adaptabilidade e características
nutricionais de caprinos Anglo Nubiano em diferentes temperaturas. O trabalho foi
desenvolvido, em uma câmara bioclimática, utilizando-se seis caprinos machos e castrados, que foram submetidos a quatro condições climáticas, 20oC - temperatura de limite inferior da Zona de Conforto Térmico (ZCT); 24oC - dentro da ZCT; 28oC - dentro da ZCT e 32oC - acima da ZCT, com umidade relativa (UR) fixa em 60%. Foram coletados os dados referentes à temperatura do ar (TA), UR, temperatura do ponto de orvalho (TPO) e a temperatura de globo negro (TGN) para a determinação do ITGU, além de parâmetros fisiológicos como a frequência respiratória (FR), frequência cardíaca (FC), temperatura retal (TR) e temperatura superficial (TS) para determinação de teste de tolerância ao calor como o de Ibéria ou Rhoad e testes adaptabilidade como o de Benezra (CA1 e CA2), a determinação dos gradientes térmicos foi feito através da diferença entre as temperaturas retal e superficial (TR-TS) e entre as temperaturas superficial e ambiente (TS-TA) como parâmetro de adaptabilidade. Para a avaliação do comportamento ingestivo foi utilizado a técnica da varredura instantânea a cada cinco minutos. Para o consumo de nutrientes e digestibilidade os animais foram mantidos em gaiolas para ensaio de metabolismo durante todo o período experimental fazendo a coleta total de fezes, ração e sobras de ração. O delineamento experimental foi o inteiramente casualizado, com quatro tratamentos (temperatura), seis repetições (animais). Os dados foram avaliados por meio de análise de variância e, quando significativos, foram comparados pelo teste Tukey a 5% de probabilidade, para a determinação do consumo de nutrientes foi feito análise de regressão. Os resultados de ITGU indicaram que as temperaturas 20 e 24°C
conferiram condições climáticas adequadas a raça. Houve diferença estatística com a elevação da temperatura para a TS, FC e FR, sendo que a TR manteve-se constante e dentro da normalidade. Para os parâmetros fisiológicos e gradientes de temperatura, houve efeito de temperatura (P<0,05) com o aumento da temperatura no interior da câmara, assim como os registros para o teste de Ibéria e CA1 e CA2, havendo alteração com aumento da temperatura no interior da câmara. No comportamento ingestivo houve uma maior procura por água com o aumento da temperatura e houve uma diminuição na ingestão de alimentos, porém não houve diferenças para o consumo de nutrientes (CEE, CPB e CFDN). Assim podemos afirmar que caprinos da raça Anglo Nubiano demostraram-se altamente adaptados as condições estudadas. / The objective of this study was to determine the adaptability and nutritional
characteristics of Anglo Nubian goats at different temperatures. The work was developed in a climate chamber using six males and castrated, who underwent four climatic conditions, 20oC - temperature lower limit of Thermal Comfort Zone (TCZ); 24oC - within the TCZ; 28oC - within the TCZ and 32oC - above the TCZ, with fixed relative humidity (RH) of 60%. Data relating to air (AT), RH, dew point (DP) temperature and black globe temperature (BGT) for determining the temperature BGT were collected, and physiological parameters such as respiratory rate (RR), heart rate (HR), rectal temperature (RT) and surface temperature (ST) for the determination of heat tolerance as Iberia or Rhoad and adaptability of tests like Benezra (AC1 and AC2), test the determination of thermal gradients was done by the difference between rectal and surface temperatures (RT-ST) and between the surface and ambient temperatures (ST-AT) as adaptability parameter. For the evaluation of the technique of feeding behavior instantaneous scan every five minutes was used. For nutrient intake and digestibility animals were kept in cages for determination of metabolism during the entire experimental period making the total collection of feces, feed and feed leftovers. The experimental design was completely randomized with four treatments (temperature), six replicates (animals). Data were evaluated by analysis of variance, and when significant, were compared by Tukey test at 5% probability for determining the nutrient intake regression analysis was done. The results indicated that the BGHI temperatures 20, 24 °C gave adequate weather race. Statistical difference was observed with increasing temperature for the ST, HR and RR, and the RT remained constant and within normal limits. For the physiological parameters and temperature gradients, temperature effect was observed (P<0.05) with increasing temperature within the chamber, as well as the records for the Iberia and AC1 and AC2 test, with change with increasing temperature inside the chamber. Chewing behavior there was a greater demand for water with increasing temperature and there was a decrease in food intake, but there were no differences for the consumption of nutrients (EEC, CP and NDF). Thus we can say that Anglo Nubian goat breed is demonstrated highly-adapted conditions studied.
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