Operative Temperature

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Operative Temperature

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In the study of human bioclimatology, one of several parameters devised to measure the air's cooling effect upon a human body. It is equal to the temperature at which a specified hypothetical environment would support the same heat loss from an unclothed, reclining human body as the actual environment. In the hypothetical environment, the wall and air temperatures are equal and the air movement is 7.6 centimeters per second. From experiment

it has been found that the operative temperature Missing Image:img src="SP7_o_files/optemp.gif"

where t_r is the mean radiant temperature; t_a is the mean air temperature; t_s is the mean skin temperature (all in degrees C); and v is the airspeed in centimeters per second. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use