Simplified Transient Hot-Wire Method for Effective Thermal Conductivity Measurement in Geo Materials: Microstructure and Saturation Effect

Figure 6

Evolution the Δ𝑇/ln(𝑡) curves for 2.8–3.4 mm glass beads in dried, acetone and water saturated states. The shift down of the Δ𝑇/ln(𝑡) curves due to the saturation accords with the difference between the thermal conductivities of the air (𝜆=0.025 W/mK), acetone (𝜆=0.164 W/mK) and pure water (𝜆=0.60 W/mK).