GONÇALVES, I. C. M.; http://lattes.cnpq.br/1773043629490933; GONÇALVES, Indira Cristiane Moreira.
Résumé:
Maintaining the thermal environment within comfort ranges is essential so that the full
genetic potential of the broiler line is demonstrated. Thus, the present work aimed to study
the thermal behavior of an aviary and evaluate its thermal performance through computer
simulation. The experiment was carried out in two seasons, winter (2019) and summer
(2020), where data were recorded in four different shifts (Shift 1 - 1:00 to 6:00; Shift 2 -
7:00 to 12:00; Shift 3 - 13:00 to 18:00; and Shift 4 - 19:00 to 24:00). The microclimate
variables measured were air temperature and relative humidity, wind speed and black
globe temperature. From these data, some indexes of animal thermal comfort were
determined: Black Globe Temperature and Humidity Index (ITGU), Radiant Thermal
Load (CTR) and the thermodynamic variable Enthalpy. The statistical analysis was
performed by means of analysis of variance (ANOVA) and the F test. The Tukey test was
used to compare the averages, assuming a probability of error of 5% (P <0.05). For the
computer simulation, a virtual model of the shed was developed with the aid of the
graphical user interface OpenStudio® in Sketchup, and later the calculation of the thermal
performance was performed using the EnergyPlus TM software. In the simulation the
thermal performance of the aviary was evaluated with different types of tiles:
thermoacoustic, ceramic, fiber cement and metal. The results related to the study of the
installation's microclimate showed that there was a significant difference between the
parameters analyzed for winter and summer, in the four shifts studied, and in both
seasons, the installation presented situations of comfort and thermal discomfort for the
animals. From the computer simulation it was possible to verify that the EnergyPlus
brings reliable responses, when comparing the experimental and simulated data, with the
responses of the variables evaluated showing the same behavior in all shifts. The results
also showed that the thermoacoustic tile provides the installation, for the climatic
conditions of the Pernambuco semiarid region, with lower thermal load, consequently
better thermal performance, followed by ceramic, fiber cement and metal tiles.