scholarly journals Análise das Condições do Campo Térmico em Ambiente Urbano: Estudo de Caso em Campus Universitário (Analysis of Conditions of Thermal Comfort in Urban Environment: a Case Study in University Campus)

2011 ◽  
Vol 4 (2) ◽  
pp. 336
Author(s):  
Joel Silva dos Santos ◽  
Vicente De Paulo R. da Silva ◽  
Lincoln Eloi de Araújo ◽  
Eduardo Rodrigues Viana de Lima ◽  
Angelina Dias Leão Costa
Keyword(s):  
Thermal Comfort ◽  
Urban Environment ◽  
Thermal Field ◽  
Urban Climate ◽  
Ground Cover ◽  
Comfort Level ◽  
University Campus ◽  
High Concentration ◽  
Data Logger

O estudo do clima urbano, especificamente do comportamento do seu campo térmico, constitui-se em um dos grandes problemas socioambientais para as populações residentes nessas áreas. Dessa forma, o presente trabalho analisa os efeitos dos diferentes tipos de cobertura de solo nas condições do campo térmico do Campus I da Universidade Federal da Paraíba, localizado na cidade de João Pessoa, PB. As medições da temperatura do ar e umidade relativa foram realizadas em dois períodos distintos (seco e chuvoso), utilizando-se data logger Hobos em seis pontos representativos da área de estudo. O Índice de Thom foi utilizado para analisar o nível de conforto térmico nas escalas diária e horária e o tipo de cobertura de solo de cada ponto analisado foi definido considerando oito classes, de acordo com a percentagem de vegetação e de materiais permeáveis e impermeáveis existentes no entorno do ponto. Os resultados do trabalho permitiram caracterizar o micro clima local e identificar alterações no ambiente provocadas pelo adensamento de construções, além de fornecerem dados para fazer sugestões no sentido de minimizar esses efeitos através da manutenção da arborização remanescente da Mata Atlântica. As análises quantitativas e qualitativas dos dados revelaram diferentes condições micro climáticas na área de estudo que foram modificadas substancialmente em função da cobertura do solo. As áreas com alta concentração de materiais impermeáveis mostraram nível de desconforto térmico bastante elevado no período de maior demanda atmosférica, que ocorre entre 11 e 15h. Palavras-chave: Clima urbano, Campo térmico, Índice de Desconforto de Thom   Analysis of Conditions of Thermal Comfort in Urban Environment: a Case Study in University Campus  ABSTRACT The study of urban climate, specifically the behavior of their thermal field, it constitutes one of the great social and environmental problems for people living in these areas. In this way, the present study analyzes the effects of different types of ground cover in the thermal field of the Federal University of Paraíba, Campus I which is located in the city of João Pessoa, PB. The measurements of air temperature and relative humidity were carried out in two distinct periods (dry and wet seasons), using data logger Hobos in 6 representative points through study area. Thom’s discomfort index was used to analyze the thermal comfort level in daily values into one-hour time scale through University campus. The types of ground cover for each analyzed point were classified into 8 classes according to percentage cover in vegetation and permeable and impermeable materials. The results allowed to characterize the local microclimate, as well as identify environment changes provided by urban crowding, and to suggest actions to reduction of these effects by maintaining Atlantic forest biodiversity. The quantitative and qualitative data analysis showed that the different microclimatic conditions at experimental area were substantially due to soil cover changes. The areas with high concentration level in waterproof materials showed high level of thermal discomfort just in the period with highest atmospheric demand which it occurs from 11 to 15h.   Keywords: Urban climate, thermal comfort, Thom’s index

scholarly journals Scoping Review of Thermal Comfort Research in Colombia

Buildings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 232
Author(s):  
Juan Manuel Medina ◽  
Carolina M. Rodriguez ◽  
Maria Camila Coronado ◽  
Lina Maria Garcia
Keyword(s):  
Thermal Comfort ◽  
Scoping Review ◽  
Architectural Design ◽  
Urban Climate ◽  
Academic Community ◽  
Additional Information ◽  
The Future ◽  
Art Research ◽  
Occupant Satisfaction

The analysis of thermal comfort in buildings, energy consumption, and occupant satisfaction is crucial to influencing the architectural design methodologies of the future. However, research in these fields in developing countries is sectorised. Most times, the standards to study and assess thermal comfort such as ASHRAE Standard 55, EN 15251, and ISO 7730 are insufficient and not appropriate for the geographical areas of application. This article presents a scoping review of published work in Colombia, as a representative case study, to highlight the state-of-the-art, research trends, gaps, and potential areas for further development. It examines the amount, origin, extent, and content of research and peer-reviewed documentation over the last decades. The findings allow new insights regarding the preferred models and the evaluation tools that have been used to date and that are recommended to use in the future. It also includes additional information regarding the most and least studied regions, cities, and climates in the country. This work could be of interest for the academic community and policymakers in the areas related to indoor and urban climate management and energy efficiency.

scholarly journals Caracterização do Campo Térmico Urbano e suas Relações com o Uso e Ocupação do Solo no Campus Central da UFPB (Urban Climate: Characterization of Thermal Field and its Relations with the Different Forms of Soil Usage and Occupation in the Central...)

2011 ◽  
Vol 4 (3) ◽  
pp. 445 ◽  
Author(s):  
Joel Silva dos Santos ◽  
Beatriz Cristina Barbalho de Melo ◽  
Lincoln Eloi de Araújo ◽  
Évio Eduardo Chaves de Melo
Keyword(s):  
Thermal Comfort ◽  
Thermal Field ◽  
Urban Climate ◽  
Thermal Discomfort ◽  
Urban Climatology ◽  
Comfort Index ◽  
Great Relevance ◽  
Representative Points ◽  
The City

O trabalho correlaciona como as diferentes formas de uso e cobertura do solo interfere nas condições do campo térmico do Campus I da UFPB localizado na cidade de João Pessoa, PB. Para a realização da pesquisa inicialmente foi feito um levantamento bibliográfico a respeito da temática em questão, seguido do reconhecimento da área de estudo e das medições in loco para a coleta dos dados de temperatura e umidade relativa do ar. O experimento de campo foi realizado em 06 pontos representativos do campus durante dois períodos distintos, um chuvoso e o outro seco, de forma a caracterizar as condições do campo térmico local, devido ao adensamento de construções e a presença de arborização. Para o cálculo do índice de conforto térmico foi utilizado o Índice de Thom. Os resultados demonstraram que as diferentes formas de uso e ocupação do solo têm alterado o campo térmico da área em estudo, e gerado uma série de preocupações entre os planejadores desse espaço. Dentre as principais preocupações estão as relacionadas ao crescimento da estrutura da universidade (que se torna inevitável) devido à rápida expansão acadêmica e a diminuição das áreas verdes, que desempenham um papel importante para amenização climática. O Campus Universitário carece de estudos que correlacionem o crescimento das construções com as condições de conforto térmico da população. Em virtude disso, este trabalho tem grande relevância e importância, uma vez que procura articular os estudos na área de climatologia urbana ao planejamento e ordenamento territorial urbano. Palavras Chave: Clima Urbano, Campo Térmico, Índice de Desconforto Térmico  Urban Climate: Characterization of Thermal Field and its Relations with the Different Forms of Soil Usage and Occupation in the Central Campus of UFPB  ABSTRACT  The work seeks to correlate how different forms of use and land cover interfere under conditions of thermal field of UFPB Campus I located in the city of João Pessoa-PB. To carry out the search was initially made a bibliographic survey regarding the subject in question, followed by the recognition of the study area and spot measurements for the collection of data of temperature and relative humidity. Field experiment was conducted on 06 representative points of campus during two distinct periods, a rainy and dryin order to characterize the conditions of the local thermal field, due to the densification of constructions and the presence of af forestation. For the calculation of thermal comfort index was used the index of Thom. The results demonstrated that the different forms of soil usage and occupation have changed the thermal field of the área under study, and generated a number of concerns among the planners of this space. Among the main concerns are related to the growth of the University's structure (that becomes unavoidable) due to rapid academic expansion and decline of Green areas, which play an important role for climate thawing. The Campus lacks studies that correlate the growth of buildings with thermal comfort conditions of the population. As a result, this work has great relevance and importance, since it seeks to articulate the studies in the area of urban climatology to urban planning and regional planning. Keywords: Urban climate, Thermal Field, Thermal Discomfort index

Ambient Seismic Noise in Urban Environment: Case Study using Downhole DAS at Curtin University Campus

2020 ◽  
Author(s):  
V. Shulakova ◽  
K. Tertyshnikov ◽  
R. Pevzner ◽  
Y. Kovalyshen ◽  
A. Bona ◽  
...  
Keyword(s):  
Urban Environment ◽  
Seismic Noise ◽  
Ambient Seismic Noise ◽  
University Campus

Space configuration and learning comfort; a case study of Federal University of Technology Minna lecture halls

2019 ◽  
Vol 9 (1) ◽  
pp. 20-31
Author(s):  
Mohammed Tauheed Alfa ◽  
Samuel O. Medayese ◽  
Obasanjo Adeola Owoyale
Keyword(s):  
Thermal Comfort ◽  
Learning Process ◽  
Comfort Level ◽  
Indoor Environmental Quality ◽  
Learning Space ◽  
University Of Technology ◽  
The University ◽  
Particulate Matter 2.5 ◽  
Furniture Arrangement

This research pursuit the objectives of testing and measuring the level of indoor environmental quality in the lecture theatres across the university; analysing the challenges of the learning component that affects the learning process and appraise the learning space configuration that best suits the learning process of the students in various lecture halls. This research employed empirical research method involving questionnaires and scientific measurement of the acoustic level, thermal comfort level, lighting and particulate matter 2.5, 1.0 and 10. The research results show that the various learning spaces have good orientation and are adequately ventilated. The thermal comfort of most of the lecture halls reduces in the afternoon. The furniture arrangement within the lecture spaces reduced the level of interaction amongst the students and between lecturers and students. Therefore, this paper recommends effective artificial cooling must be introduced in the afternoon and the ergonomics within the lecture halls must be made flexible. Keywords: Space configuration; Technology; Minna

Influence of solar radiation on the energy consumption of large buildings on a university campus

2020 ◽  
pp. 94-106
Author(s):  
Eusébio Conceição ◽  
António Sousa ◽  
João Gomes
Keyword(s):  
Energy Consumption ◽  
Solar Radiation ◽  
Thermal Comfort ◽  
Numerical Study ◽  
Comfort Level ◽  
Total Solar Radiation ◽  
Hvac System ◽  
University Campus ◽  
System Energy ◽  
Typical Summer

This paper reports the numerical study on the influence of solar radiation on the energy consumption of large buildings on a university campus. The actual campus is located in the south of Portugal, in a Mediterranean type environment, and consists of 6 educational buildings. These six buildings have a total area of 27,599 m2 and 595 compartments, where 6,529 opaque surfaces (doors, walls, etc.) and 983 transparent ones (windows) were identified. This study aims to assess numerically how solar radiation transmitted on windows affects the energy consumption of the Heating, Ventilation, and Air-Conditioning (HVAC) systems, controlled by the PMV (Predicted Mean Vote) index, of each of these buildings, and the thermal comfort level of the occupants. Software developed by the authors is used to simulate the thermal behavior of buildings with complex topology. This software evaluates indoor air quality inside the spaces, thermal comfort of the occupants, thermal energy consumption of the HVAC system, and solar radiation distribution outside the buildings and inside the compartments, among others. The HVAC control system based on the PMV index applied in this work was designed to maintain the PMV comfort index within category C of ISO 7730, with a maximum of 15% of people dissatisfied. In order to evaluate the indoor comfort level of the occupants, the totals of cold and warm uncomfortable hours were calculated. Two different weather conditions, typical of the region, were set as inputs for the simulation performed in this study: a typical winter day, and a typical summer day. The outputs obtained were the daily evolution of total solar radiation transmitted on windows, total uncomfortable hours for the occupants, and total HVAC system energy consumption for each building. The results obtained show that, for typical winter conditions, an increase in the transmitted solar radiation on windows causes a decrease in HVAC system energy consumption, and also in the number of uncomfortable hours, which is a favorable situation. On the other hand, for typical summer conditions, it is observed that when transmitted solar radiation on windows increases, HVAC system energy consumption, and the total number of uncomfortable hours increase as well, configuring an unfavorable situation. It is also found that the values of solar radiation transmitted on windows are higher in winter than in summer conditions. In summer, the lowest values of solar radiation transmitted on windows occur at noon. The last two observations lead to the conclusion that, overall, these buildings have correctly positioned passive shading elements, a technique that contributes to an adequate solar passive architectural design.

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