Steady state and transient temperature distributions in the human thigh covered with a cooling pad Kindle Edition

426.00 (as of March 12, 2020, 5:02 pm)

An analytical and experimental study was done on the performance of cooling pads attached to a human thigh. Each cooling pad consisted of a long, water cooled tube formed into a serpentine shape with uniform spacing between the parallel sections. The analytical work developed a cylindrical model for the human thigh. The transient times predicted by this model ranged from 25 to 80 minutes, which is reasonably close to the experimental results. Calculated and measured steady state temperature profiles were in fair agreement. The transient times associated with a change from a high metabolic rate of 1800 Btu/hr (528 w) to a low level of 300 Btu/hr (88 w), were found to be about 120 minutes. A change from 300 Btu/hr (264 w) to 300 Btu/hr (88 w) resulted in 90 to 100 minute transients. However, the transient times for a change in metabolic rate in the opposite direction from 300 Btu/hr (88 w) to 1800 Btu/hr (528 w) were 40 to 60 minutes. Leo, R. J. and Shitzer, A. and Chato, J. C. and Hertig, B. A. Unspecified Center NASA-CR-127523, ME-TR-286 NGR-14-005-103 HUMAN FACTORS ENGINEERING; LIQUID COOLING; PROTECTIVE CLOTHING; TEMPERATURE DISTRIBUTION; THIGH; METABOLISM; PHYSICAL EXERCISE; SKIN TEMPERATURE (BIOLOGY)

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An analytical and experimental take a look at was once performed at the efficiency of cooling pads hooked up to a human thigh. Every cooling pad consisted of an extended, water cooled tube shaped right into a serpentine form with uniform spacing among the parallel sections. The analytical paintings evolved a cylindrical type for the human thigh. The brief instances anticipated by means of this type ranged from 25 to 80 mins, that is rather on the subject of the experimental effects. Calculated and measured stable state temperature profiles have been in honest settlement. The brief instances related to A metamorphosis from a prime metabolic price of 1800 Btu/hr (528 w) to a low stage of 300 Btu/hr (88 w), have been discovered to be approximately 120 mins. A metamorphosis from 300 Btu/hr (264 w) to 300 Btu/hr (88 w) ended in 90 to 100 minute transients. Alternatively, the brief instances for A metamorphosis in metabolic price in the wrong way from 300 Btu/hr (88 w) to 1800 Btu/hr (528 w) have been 40 to 60 mins. Leo, R. J. and Shitzer, A. and Chato, J. C. and Hertig, B. A. Unspecified Middle NASA-CR-127523, ME-TR-286 NGR-14-half-103 HUMAN FACTORS ENGINEERING; LIQUID COOLING; PROTECTIVE CLOTHING; TEMPERATURE DISTRIBUTION; THIGH; METABOLISM; PHYSICAL EXERCISE; SKIN TEMPERATURE (BIOLOGY)

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