Avaliação subjetiva do conforto térmico laboral de uma empresa angolana
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2018
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O conforto térmico é uma resposta subjetiva em que uma pessoa expressa
satisfação com o ambiente térmico como resultado das trocas de calor do corpo e o
meio. São diversos os fatores que contribuem para a sensação de conforto em um
ambiente de trabalho. Como por exemplo: fatores ambientais, fatores fisiológicos,
fatores subjetivos e a arquitetura. O nosso estudo aborda o intervalo dedicado aos
ambientes térmicos moderados. A metodologia utilizada foi a adaptativa e designada
por quantitativa, pesquisa realizada em situações reais do cotidiano, com pessoas a
desempenhar as suas atividades em locais de trabalho onde as pessoas expressavam
suas sensações e preferências térmicas de acordo com escalas favoráveis.
Para identificar o conforto térmico laboral sentido pelos trabalhadores em seu
ambiente de trabalho realizou-se por meio de inquéritos uma avaliação subjetiva da
aclimatização do local tendo como objetivo identificar a aceitação dos trabalhadores
em relação ao ambiente no escritório, usando como caso de estudo a empresa
Angolana SOMG de Operação e manutenção de toda a rede de gasoduto de gás
natural liquefeito da Angola LNG. A amostra foi de uma população de 50 indivíduos
contida num universo de 70 trabalhadores. O estudo reforça a necessidade de
melhoria na área de conforto térmico laboral em Angola.
Verificou-se que o método de escalas subjetivas de avaliação (ISO 10551, 2001) é
um instrumento importante na avaliação subjetiva do conforto térmico. Houve valores
superiores a 60% entre os resultados do PMV e PPD obtidos através dos gráficos de
Fanger com as respostas dos trabalhadores. Dos 50 trabalhadores participaram do
inquérito, 19% demonstraram estar insatisfeitos e 81% de satisfeitos, conforme
demonstrou o resultado do índice PPD em relação ao conforto no ambiente em que se
encontravam. Foi verificado na pesquisa que existe uma relação direta entre os
valores de PMV e PPD em relação a satisfação dos trabalhadores no ambiente
térmico do posto de trabalho no momento em que davam as respostas ao inquérito,
68% dos trabalhadores consideram estar neutros (conforto). No geral aproxidamente
100% votos foram a favor de um ambiente do posto de trabalho aceitável.
Thermal comfort is a subjective response in which a person expresses satisfaction with the thermal environment because of the heat exchanges of the body and the environment. Several factors contribute to the feeling of comfort in a work environment. As for example: environmental factors, physiological factors, subjective factors and architecture. Our study addresses the range dedicated to moderate thermal environments. The methodology used was the adaptive and designated as quantitative, research conducted in real situations of daily life, with people to perform their activities in workplaces where people expressed their sensations and thermal preferences according to favourable scales. To identify the occupational thermal comfort felt by the workers in their work environment. Was carried out through surveys a subjective evaluation of the acclimatization of the place, aiming to identify the acceptance of the workers in relation to the environment in the office, using as case study the company Angolan SOMG de Operation and maintenance of the entire liquefied natural gas pipeline network of Angola LNG. The sample was of a population of 50 individuals contained in a universe of 70 workers. The study reinforces the need for improvement in the area of thermal comfort in Angola. They are verified that the method of subjective evaluation scales (ISO 10551, 2001) is an important instrument in the subjective evaluation of thermal comfort. There were values higher than 60% between the results of PMV and PPD obtained through the Fanger charts with the workers' responses. Are taking part in the survey 50 workers, 19% were dissatisfied and 81% satisfied, as demonstrated by the PPD index in relation to comfort in the environment in which they were found. In the research, there was a direct relationship between the values of PMV and PPD in relation to the satisfaction of workers in the thermal environment of the workplace at the time they gave the answers to the survey, 68% of workers considered to be neutral (comfort). Proximately 100%
Thermal comfort is a subjective response in which a person expresses satisfaction with the thermal environment because of the heat exchanges of the body and the environment. Several factors contribute to the feeling of comfort in a work environment. As for example: environmental factors, physiological factors, subjective factors and architecture. Our study addresses the range dedicated to moderate thermal environments. The methodology used was the adaptive and designated as quantitative, research conducted in real situations of daily life, with people to perform their activities in workplaces where people expressed their sensations and thermal preferences according to favourable scales. To identify the occupational thermal comfort felt by the workers in their work environment. Was carried out through surveys a subjective evaluation of the acclimatization of the place, aiming to identify the acceptance of the workers in relation to the environment in the office, using as case study the company Angolan SOMG de Operation and maintenance of the entire liquefied natural gas pipeline network of Angola LNG. The sample was of a population of 50 individuals contained in a universe of 70 workers. The study reinforces the need for improvement in the area of thermal comfort in Angola. They are verified that the method of subjective evaluation scales (ISO 10551, 2001) is an important instrument in the subjective evaluation of thermal comfort. There were values higher than 60% between the results of PMV and PPD obtained through the Fanger charts with the workers' responses. Are taking part in the survey 50 workers, 19% were dissatisfied and 81% satisfied, as demonstrated by the PPD index in relation to comfort in the environment in which they were found. In the research, there was a direct relationship between the values of PMV and PPD in relation to the satisfaction of workers in the thermal environment of the workplace at the time they gave the answers to the survey, 68% of workers considered to be neutral (comfort). Proximately 100%
Descrição
Orientação: Luís Manuel Monteiro Alves
Palavras-chave
MESTRADO EM ENGENHARIA DO AMBIENTE, ENGENHARIA DO AMBIENTE, ENVIRONMENTAL ENGINEERING, CONFORTO TÉRMICO, THERMAL CONFORT, GÁS NATURAL, NATURAL GAS, AMBIENTE DE TRABALHO, WORK ENVIRONMENT, EMPRESAS, COMPANIES, ANGOLA, ANGOLA