Unaware of physical laws about heat and humidity transfer through textile layers, man started wearing clothing based on his natural needs. In spite of this fact, theories about heattransfer were primarily used in
the basis of numerical solution into heattransfer equation in Eulerian coordinates using finite difference method in forward Euler's time integration scheme. A heat source model is developed for the laser beam deep penetration welding, allowing better
1 Introduction Boiling heattransfer and two-phase flow plays a significant role in many heat exchange systems. Boiling heattransfer mode is an efficient mode among other heattransfer modes, and this is due to the latent heat of vaporization that
assemblies is affected by several factors, which are fiber volume percentage, fiber radius, temperature, and fiber emissivity. Wu et al. [ 14 ] investigated the influence of the above parameters on radiative heattransfer systematically based on the model of
A simple one-dimensional, axisymmetric model of a gas-pressure deformation calorimeter containing a lumped heat source accounts
for observed pressure changes in terms of conductive and radiant components of heat transfer. Agreement is generally good
between experimental data and the predicted calorimeter response for the range of source dimensions, heating rates, and test
temperatures investigated in the study.
The results of an investigation of heat transfer in a new type of insulation (microsphere insulation) are presented. The effects of the microsphere diameter, the concentration of metallized microspheres and the residual gas pressure on the thermal conductivity of the insulation were investigated. Measurements were made of the thermal conductivity at 77 to 300 K of microspheres with differing diameters (e.g. 95, 130 and 270 μm) and of samples with silver metallized microsphere concentrations of 7 and 32%. Measurements of average thermal conductivity (77–296 K) were made at residual gas pressuresk(p) in the range from 10−3 Pa to 105 Pa for pure nitrogen. The component of heat transfer by gas,kgc(p), was estimated.