Análises de sensibilidade em um modelo matemático para predição do ambiente térmico em galpões climatizados para frangos de corte.

Abstract

Sensitivity analyses in a mathematical model to predict the thermal environment throughout the length of acclimatized broiler chickens housing were carried out with the goal of evaluating the influence of several parameters that compose the model in the calculation of temperature, relative humidity and temperature-humidity index (THI). Several climatic conditions, air flow rate that infiltrates throughout the broiler housing (Qinf), air fluxes through the pad cooling (Qpad), pad cooling efficiencies (Epad); lodging densities (Dens), broiler chickens body masses (Mbroilers) and overall heat transfer coefficients of the roof (Uroof). The analysis indicates a strong response to the outside temperature, outside relative humidity and Epad; a smaller sensitivity to the Dens and no sensitivity to Mbroilers, Uroof and Qinf/Qpad, which is consistent with the type of system studied. Therefore, in a commercial production system, it should consider the Epad and Dens, because they are the variables feasible to be handled.