The present research had the objective to compare the poultry building thermal
efficiency using two different solar orientation: East-West and North-South. It was also verified
the use of forced ventilation on the thermal behavior of the buildings, as well as the use of trees shade on the North-South roof slope. The research was done in distorted small scale models
representing poultry buildings located in the experimental area of the Rural Building
Department, in the Agricultural Engineering College of UNICAMP. The place was located as a
latitude of 22°54’S and a longitude of 47°05’N and altitude of 674m. Five models were built such
as: two in the East-West solar orientation and three in North-South. Trees were planted to
provide shade in two of the North-South oriented models for reducing the solar thermal incident
radiation load in the lateral walls and roof. Fans were put in each model with different orientation
(one East-West and other North-South) to verify the influence of forced ventilation in both cases.
Using the climatic data radiation heat load as well as the thermal balance were calculated. In
order to determine the statistical difference in the several studied models, average heat
production data was compared using simulated data. It was found that the building with North-South
solar orientation shaded by trees and using forced ventilation presented the same
thermal behavior of the ones with solar orientation East-West, where forced ventilation was
used.