2596 -- Comfort Limits for Heated Ceilings PDF

The purpose of the present study is to determine the limits of overhead radiation to which man in thermal neutrality can be exposed without feeling discomfort. Thermal neutrality for a person is defined as a condition in which he prefers neither a higher nor a lower ambient temperature level. Thermal neutrality is a necessary condition for a person to attain thermal comfort. However, this condition is not always sufficient. It is a further requirement that no local warm or cool discomfort is experienced on any part of the body. Overhead radiation from a heated ceiling can create such local discomfort: either warm discomfort at the head or cold discomfort at the feet (or both).