Accession Number : AD0623410

Title :   A Method of Partitional Calorimetry of Individual Skin Areas.

Descriptive Note : Technical rept. on Studies on Cutaneous Heat Losses,

Corporate Author : SAINT LOUIS UNIV MO DEPT OF PHYSIOLOGY

Personal Author(s) : Hertzman,Alrick B. ; Randall,Walter C. ; Peiss,Clarence N. ; Ederstrom,Helge E. ; Seckendorf,Russel

Report Date : NOV 1951

Pagination or Media Count : 19

Abstract : A method of partitional calorimetry which is applicable to the measurement of the radiative, convective and evaporative heat losses from a limited skin surface (forehead, palm, thigh, etc) was based on measurements of skin and environmental temperatures and cutaneous evaporative rates. Radiation was calculated from the Stefan-Boltzmann equation; convection was estimated from the air insulation which in turn was approximated from the application of the diffusion equation to the evaporation of water. The local evaporative rates were measured by means of desiccating capsules. The sources of error are described. The total body losses of heat via radiation and convection from the skin cannot be obtained from the sum of the weighted regional rates. For reasons given in the text, this is not a criticism of regional partitional calorimetry. Total cutaneous evaporation is closely approximated by the sum of the weighted regional rates. (Author)

Descriptors :   (*SKIN(ANATOMY), TEMPERATURE), BODY TEMPERATURE, MEASUREMENT, CALORIMETERS, PERSPIRATION, SWEAT COOLING, SWEAT GLANDS, EVAPORATION, TEMPERATURE SENSITIVE ELEMENTS

Distribution Statement : APPROVED FOR PUBLIC RELEASE