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This study suggests that indoor air-related respiratory symptoms are a matter of concern in places with hot and humid climate. The regression models were adjusted by confounders that could be used in further reanalysis of indoor air quality related symptoms and ventilation systems with expanded variety of climatic conditions.

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1 -INTRODUÇÃO 1 1.1 -OBJETIVOS E OBJETO DE ESTUDO 4 1.2 -ORGANIZAÇÃO DO TRABALHO 5 2 -CONFORTO TÉRMICO E SEGURANÇA 6 2.1 -CONFORTO TÉRMICO 7 2.2 -DESCONFORTO TÉRMICO LOCAL 13 2.3 -AVALIAÇÃO DE CONFORTO TÉRMICO EM VEÍCULOS 13 AUTOMOTIVOS 3 -CARGA TÉRMICA 21 3.1 -GANHOS DE CALOR 22 3.1.1 -Condução através de paredes e vidros 22 3.1.2 -Radiação solar através de janelas 23 3.1.3 -Condução de calor do compartimento do motor 23 4 -SISTEMA DE REFRIGERAÇÃO 41 4.1 -CICLO DE REFRIGERAÇÃO POR COMPRESSÃO DE VAPOR 41 4.1.1 -O ciclo ideal de Carnot 41 4.1.2 -O ciclo ideal de refrigeração por compressão de vapor 43 4.1.3 -O ciclo real de refrigeração por compressão de vapor 45 4.1.4 -Fluido refrigerante 46 4.2 -COMPONENTES DO CICLO DE REFRIGERAÇÃO 48 4.5.2 -Funcionamento e características 63 4.5.3 -Capacidade de refrigeração 64 4.6 -DISPOSITIVO DE EXPANSÃO 64 4.6.1 -Construção mecânica 64 4.6.2 -Funcionamento e características 65 4.7 -ACUMULADOR DE LÍQUIDO 65 4.7.1 -Construção mecânica 66 4.7.2 -Funcionamento e características 66 4.8 -CONTROLE DO SISTEMA 67 4.8.1 -Controle de temperatura 68 4.8.2 -Controle do ciclo de refrigeração 68 5 DIMENSIONAMENTO DO CICLO DE REFRIGERAÇÃO 70 5.1 -CONDIÇÕES DE ENTRADA DE PROJETO 70 5.2 -PROCEDIMENTO DE PROJETO 71 5.2.1 -Evaporador ABSTRACTHuman being spends a large amount of energy to satisfy its comfort needs. In the automotive applications, air conditioning is the second larger energy consumption system, after the mobility system itself.The refrigeration system for automotive application has peculiar characteristics, which are different from other refrigeration systems (e.g. buildings, food refrigeration, etc). In an automotive application, variation of several conditions are highly significant, such as the sun load, ambient temperature and humidity, the number and position of the occupants inside the vehicle, different engine loads and speeds and so on. The system must, therefore, be designed to operate satisfactorily under all these conditions and to provide thermal comfort with smallest possible energy consumption.The objective of this work is to present the project and simulation of a refrigeration cycle for a compact size vehicle in order to meet thermal load requirements of a specific wind tunnel test. From the thermal load, the refrigeration cycle is designed according to a design procedure, which includes the sizing of main components such as compressor, condenser, evaporator and expansion device. The results of the calculations are compared