Condutividade Térmica de Amostras do Complexo Amparo

Abstract

Thermal conductivity measurements were made from borehole chips and from outcrop samples from Circuito das Águas do Estado de São Paulo. Outcrop sample measurements were made with the needle probe method in a semi-infinite space. The equipment was calibrated in the 1.36 to 4.71 W/mK thermal conductivity interval. The divided bar method was used to measure the chip samples from wells in the region and the solid component thermal conductivity was obtained by the following models: series, parallel,

Bruggeman's, Maxwell's and geometric. The average thermal conductivities for the Complexo Amparo lithological units are (3.3±0.7) W/mK for migmatite, (3.2 ± 0.4) W/mK for gneiss-granite, (4.5 ± 0.1) W/mK for quartzite mylonite and (3.4±0.8) W/mK for blasto-mylonite, and for the porphyritic granite of Maciço de Morungaba and Complexo Socorro the thermal conductivity is (3.3 ± 0.7) W/mK.