Abstract
Two samples of overcoating material were tested for heat transmission in wind when an air space under the material was provided. The effect of a wind breaker both under and over the material was observed. The work shows that when a sample has a high permeability to air and does not lie close to the hot plate, there is a very marked differ ence between the results obtained with a wind blowing parallel to the surface and those with the wind striking the surface at 45°. The work also proves that the thermal insula tion afforded by a fabric or combination of fabrics in wind depends on what is underneath the sample and suggests that some purely arbitrary test procedure, specified by a standardizing authority, may be desirable.
Get full access to this article
View all access options for this article.