ANÁLISE DE INCERTEZAS DE PARÂMETROS AMBIENTAIS PARA CONFORTO TÉRMICO HUMANO

Abstract

The evaluation of environmental conditions for thermal comfort is parameterized by national and international standards, based on the Fanger study. The thermal balance equation, adapted for the calculation of the PMV (Predicted Mean Vote) is a function with six main parameters, being two personal and four environmental. Such environmental parameters can be obtained from measurements, by appropriate instrumentation, according to ISO 7726 criteria. Since there are several parameters to be evaluated simultaneously, it is necessary to consider the combined uncertainty to determine the influence of each parameter on the final value of PMV. The uncertainty of ± 0.13 shows that the ISO 7730 criteria for PMV are very strict for the evaluation of thermal environments, since the PMV variation around neutrality for category A has a value close to the combined standard uncertainty. For this, PMV should not be the only parameter considered to classify the thermal environment.