Coupling model for heat transfer between solid and gas phases in aerogel and experimental investigation

A multi-level fractal model for the effective thermal conductivity of silica aerogel

“…Thus, the structures of different silica aerogels are similar under different preparations. In this paper, the present model is validated by the experimental data from Wei et al [21] and Bi et al [32] under different densities.…”

Numerical study of radiative properties of nanoporous silica aerogel

“…15 compares the predicted effective thermal conductivity of silica aerogel by Eq. (23) with experimental data from Wei et al [12] and Bi et al [40] at different densities but fixed temperature 300 K. It is seen that an optimal density value of 145 kg/m 3 is obtained at which the corresponding minimal effective thermal conductivity is achieved. The effective thermal conductivity at different temperatures is subsequently presented in Fig.…”

Thermal transport in nano-porous insulation of aerogel: Factors, models and outlook

“…When the Swimm Model and Zhao Model are used to calculate the coupling thermal conductivity, many parameters are involved and numerical integration is required, which result in difficulty and inconvenience for the calculation and engineering applications. For this reason, Bi et al [36] established a new coupling thermal conductivity model based on the gasesolid coupled heat transfer in a spherical particle system (see Fig. 14), expressed as…”

“…According to Bi et al [36], only two-thirds of the backbones in porous material contribute to the coupling thermal conductivity, and the final expression based on strict theory derivation is…”