Relationship between local temperature and heat transfer through the hand and wrist

✍ Scribed by Dr. Z. J. Sienkiewicz; J. B. O'Hagan; C. R. Muirhead; A. J. Pearson

• Book ID: 101708988
• Publisher: John Wiley and Sons
• Year: 1989
• Tongue: English
• Weight: 474 KB
• Volume: 10
• Category: Article
• ISSN: 0197-8462
• DOI: 10.1002/bem.2250100108

✦ Synopsis

The heat uptake that resulted from immersing the hand and wrist into a water-filled calorimeter maintained at temperatures between 37-40 "C was measured under standard conditions in a group of eight subjects of either sex. The rate of heat transfer (W) increased exponentially with temperature and was a function of hand or body size and age, but not sex. The heat transfer rate normalized to hand mass (W.kg-') was determined by temperature and age: best-fit mean values (and 95% confidence limits of the population) were 6.0 W.kg-' (3.2-11.2 W.kg-') at an immersion temperature of 37 "C and 25.4 W.kg-' (13.7-47.0 W.kg-') at 40 "C. The application of these results to limits on specific energy absorption rate induced in the hands and wrists by radiofrequency dielectric heat sealer welders is discussed.