Utilização de experimentos didáticos no ensino de conforto ambiental para construções agrícolas.

Abstract

The Environmental Comfort Laboratory – LACA - of the Agricultural Engineering Faculty – UFPEL - has been working on a proposal of incentive and innovation in the environmental comfort for Agricultural buildings in lab classes by assembling didactic experiments. The aim is to give the students access to an innovative educational practice that improve the presented concepts, in a theoretical way, in class, arousing their interest in thermic comfort studies. In this work is given an account of an experiment that consists of the assembly and evaluation of a model which makes possible to visualize ventilation flows based on polystyrene little balls movement , with photographic register, analyzed later. The flow was one of the approached themes due its importance for the act of projecting, since it is through this that thermic and hygienic exchanges happen, influencing the comfort conditions. The natural simulation is done through small fans attached to electric motors that permit different orientations in relation to the fronts. The collection of photos of each simulation permited a view of the ventilation flows inside the model. Based on this, we could see that, even though the didactic aim was reached , the model must be improved in order to make the mobility of internal compartments and the air speed control possible.