Fig. 5 Demonstration of thermoregulation on human skin.

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Presentation transcript:

Fig. 5 Demonstration of thermoregulation on human skin. Demonstration of thermoregulation on human skin. (A) Photograph and schematic diagram of the TED armband. The wearer’s arm was encompassed by a controlled thermal environment. (B) Change in Tskin under various Tair conditions before and after TED operation. Without TED operation, Tskin varied from 28.5° to 34.3°C, while Tair changed from 22° to 36°C. With active thermoregulation of the TED, Tskin converged to the preset comfort temperature (32°C) under all the Tair conditions. (C) IR image of the TED armband (hot side) during cooling (I = 160 mA) on the subject’s arm. (D) IR image of the skin after removing the TED armband, showing residual cooling effect. (E) Summary of Tskin as a function of Tair with and without TED operation. The cooling and heating of the TED broadened the comfortable ambient temperature zone from 2°C (Tair = 28° to 30°C) to 14°C (Tair = 22° to 36°C). (F) Schematic of the TED armband integrated with the flexible battery pack (photograph). (G) Skin temperature change by TED cooling under three conditions: (1) sitting indoors, (2) walking indoors, and (3) walking outdoors under mild wind conditions. The maximum skin cooling effect was 6°C. Photo credit: Sahngki Hong, University of California, San Diego. Sahngki Hong et al. Sci Adv 2019;5:eaaw0536 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).