Redução de temperatura através da aplicação de princípios físicos em cobogós.

Abstract

High temperatures are frequent in much of Brazil, mainly in the northeast region, more specifically in the northeastern backwoods. The development of a sustainable element capable of absorbing high temperatures becomes a necessity in places that do not have electricity, and for those that have more economical and environmentally harmonious alternative. In the 1920s came the “cobogós” that are architectural elements used in the masonry that enable the passage of lighting and ventilation, being versatile elements because the addition to contributing in comfort also favor the aesthetics of the environment. For the present work it is desired to add to the “cobogós” the function of cooling the wind that flows through it, using the application of physical principles of thermodynamics and evaporative cooling, so the objective research is to create “cobogós” able of cooling the wind through the application of Physical principles. The creation of Eco Cooler in Bangladesh was an inspiration in the format of the “cobogós”, and analyzing the veracity of the information provided, through theoretical research, proved to be a nozzle the ideal format. The concept of evaporative cooling was added to the element thinking in the empty cobogó in the shape of a nozzle, in such a way that it could be filled with water. To verify the temperature decrease, experiments with prototypes were carried out. A fan and hair dryer were used as a wind simulator, the air flow flowed from the external environment to the internal and perpendicular to the parts in the direction of the largest to the smallest cross section. With the use of the fan in the cobogó obtained a mean temperature decrease equal to 1.8 ºC, with the fan in the bottles obtained a mean reduction of 0.47 ºC and with the dryer in the cobogó resulted in an average reduction of 5. 33 ° C.