CARVALHO, Valcimar F. de.; YANAGI JUNIOR, Tadayuki.; DAMASCENO, Flávio A.; MORAIS, Sandra R. P.; TINÔCO, Ilda F. F.
Resumo:
The goal of the present work was to evaluate the thermal environment inside of an
acclimated broiler housing, equipped with negative tunnel ventilation and evaporative pad cooling and
misting systems working simultaneously. For the analysis, dry-bulb temperature (tdb), relative
humidity (RH) and velocity (V) of air and, black globe temperature (tbg), inside (30, 60, 90 and 120 m)
and outside of housing were measured. Following, based on the previous variables cited, it was
determined the values of black globe-humidity index (BGHI) and thermal heat load (THL). Based on
the BGHI and THL, it can be concluded that the thermal condition inside of the housing showed
favorable to broiler chicken grown, however, it was verified that the values of RH were greater than
80%, mainly at 90 and 120 m far from the extremity of the house near to the air inlet. These high
values of RH can be easily solved with the installation of a control system based on tdb and RH.