Paper presented at the 6th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 30 June - 2 July, 2008.
It is well known that thermal conductivity of fabric is mainly
influenced by their porosity. The fabric porosity is a function of
construction parameters such as yarn fineness and set of weft
and warp. The ideal volume porosity can be computed from
basic fabric parameters and the structure of elementary cell.
The main aim of this work is the creation of simple mechanistic
model for the prediction of fabric thermal conductivity from
basic fabric properties such as yarn diameters, weft and warp
sett, planar weight and thickness of fabric. This model is in fact
the combination of air conductivity and conductivity of fibrous
phase in hierarchy fibers, yarn and fabric. The experimentally
obtained thermal conductivities of 27 wool/PET plain weaves
with constant sett of warp and varying sett of weft and varying
yarn fineness are used for checking of the predictive ability of
this model.
