Showing papers on "Thermal comfort published in 1971"

Performance and Thermal Comfort

Abstract: This experiment attempts to establish an objective measure of thermal comfort. A theoretical explanation of the relationship between performance and comfort is given and is represented in terms of an hypothesis. A total of 50 subjects was divided among five groups, each group experiencing one temperature in the range 15.6-26.7°C (60-80°F) for both air and surfaces. Each subject was placed in an environmental chamber for a two-hour period. During this period subjects performed two tasks: (a) an auditory inspection task, and (b) a visual tracking teat, separately and in combination. At the beginning and end, of the period each subject completed three rating scales: (a) the Bedford Warmth Scale, (b) a Thermal Sensation scale, and (c) a Comfort scale. Examination of the results from the dual task performance revealed an optimum of performance at a temperature similar to the optimum comfort temperature as given by the subjective rating scales, and an overall significant temperature effect on performance.

Chapter 5 – MAN

Abstract: Publisher Summary This chapter focuses on the behavioral and physiological temperature regulation as related to the thermal environment. It also discusses the fundamental thermodynamic process concerned in the heat exchange between man and his environment. Thermal comfort is defined as a state of mind that expresses satisfaction with the thermal environment. This chapter presents the application of simulation models of the thermoregulation, which can be used by engineers designing life support systems as a complete description of man's responses to any combination of conditions without their having detailed knowledge of the complete physiological mechanism. This is also applicable to situations involving the resting man during thermal transients and in the steady state.