An experimental study of convective heat transfer of a body disturbed by local air flow.

States that inconsistency exists in thermal comfort conditions for local air movement. It is difficult to study, apparently because of the concurrence of the natural convection produced by metabolic heat dissipation of a body and room air movement. Claims that the term local draft sensation can be divided into the physical stimulation of air movement and the physiological perception of a body to analyse such a sensation. In order to observe the physical side of thermal comfort of local draft, the study stimulated the back, neck and ankle of a thermal manikin by local air flows of five temperature differences and four velocities from three distances. A comparison was done of changes in the air temperature at a distance of 5 mm from their surfaces and in the heat flux on their surfaces with and without the local air flow. Results showed that the flows affected the ankle more than the neck.