Tecnologia/Technology THREE METHODS TO EVALUATE THE USE OF EVAPORATIVE COOLING FOR HUMAN THERMAL COMFORT J. R. Camargoa, ABSTRACT b C. D. Ebinuma , This paper presents three methods that can be used as reference for efficient and S. Cardosoa use of evaporative cooling systems, applying it, latter, to several Brazilian cities, characterized by different climates. Initially it presents the basic aUniversidade de Taubaté principles of direct and indirect evaporative cooling and defines the Departamento de Engenharia Mecânica effectiveness of the systems. Afterwards, it presents three methods that allows to determinate where the systems are more efficient. It concludes Rua Daniel Danelli, s/n that evaporative cooling systems have a very large potential to propitiate CEP. 12060-440, Taubaté, SP, Brasil thermal comfort and can still be used as an alternative to conventional bUniversidade do Estado de São Paulo systems in regions where the design wet bulb temperature is under 24ºC. Departamento de Energia Rua Ariberto Pereira da Cunha, 333 Keywords: Evaporative Cooling, Thermal Comfort, Air Conditioning CEP. 12500-000, Guaratinguetá, SP, Brasil
[email protected] INTRODUCTION determinate where, when, how and what is the operational efficiency of these systems and, for this, Air conditioning is responsible for the increase three methods are presented in order to establish of the efficiency of the man in his job as well as for references, applied to several Brazilian cities, his comfort, mainly in warm periods along the year. characterized by different climates. Currently, the most used system is the mechanical The first method is based on Watt (1963) and vapor compression system.