Eficiência de sistema de aquecimento auxiliar para aviários, com base nos índices de conforto térmico

Abstract

This study had as objective to evaluate prototypes of solar heater for broiler chicken with diameter of 1.0; 1.5 and 2.0 m (treatments AQ1, AQ2 and AQ3, respectively) based on the thermal comfort indexes in Marechal Candido Rondon, Paraná State, Brazil. The values of black globe temperature, dry bulb, wet bulb and wind speed were registered above the heater and in the external conditions. Data were collected each two hours, between 8:00 AM and 4:00 PM during the experimental period. Based on hourly values for heater, the Temperature and Humidity Index (THI) and the Black Globe Humidity Index (BGHI) didn't present results that differentiated the appraised heaters. The highest value of Thermal Heat Load (THL) was observed for AQ1 and AQ2 at 2:00 PM. When the heaters are compared, independent of the observation schedule, was verified that the largest values of THI and BGHI occurred for AQ1 and AQ3 and CTR for AQ1. The time which were observed the largest values of these indexes was 2:00 PM. It was concluded that the heating system can be constituted an alternative for use in aviaries considering that provide similar conditions of thermal comfort that the commercial systems.