Accession Number : AD0717799

Title :   Theory of the Globe Thermometer.

Descriptive Note : Research paper,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT TORONTO DOWNSVIEW (ONTARIO)

Personal Author(s) : Keuhn,L. A. ; Stubbs,R. A. ; Weaver,R. S.

Report Date : 08 MAY 1970

Pagination or Media Count : 8

Abstract : The heat exchange at the surface of a globe thermometer in equilibrium with its environment is described. A semitheoretical formula is derived, and presented graphically, to relate the diameter and emissivity of a globe to the environmental heat exchange of the particular animal species for which the globe is an analogue. Experimental data are presented which substantiate the validity of the formula. Published heat exchange data pertinent to humans are examined and the ratio of the parameter of convective heat exchange to the parameter of radiative heat exchange is determined for specified postures and directions of air movement. The values of diameter and emissivity in the globe thermometer providing the best analogue of man in these conditions are determined from this ratio. (Author)

Descriptors :   (*THERMOMETERS, HEAT TRANSFER), STRESS(PHYSIOLOGY), CONVECTION(HEAT TRANSFER), ENVIRONMENT, DESIGN, CANADA

Subject Categories : Stress Physiology
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE