Effective Thermal Conductivity of Fibrous Insulation

Examination of parameters in heat transfer model

Abstract

The applicability of the heat transfer model proposed by the authors in the previous paper was examined by comparison of theoretical values of the effective thermal conductivity with experimental values for two types of fibrous insulations, one formed in bulk (fiber orientation is isotropic) and the other in blanket (fiber orientation is random in planes). The model equations explained satisfactorily the experimental results for the insulations at room temperature under various experimental conditions in which both airpressure and packed density were varied.