Design and testing of a liquid cooled garment for hot environments

Journal of Thermal Biology
Tinghui GuoXiaobing Luo

Abstract

Liquid cooled garments (LCGs) are considered a viable method to protect individuals from hyperthermia and heat-related illness when working in thermally stressful environments. While the concept of LCGs was proposed over 50 years ago, the design and testing of these systems is undeveloped and stands in need of further study. In this study, a detailed heat transfer model of LCG in a hot environment was built to analyze the effects of different factors on the LCG performance, and to identify the main limitations to achieve maximum performance. An LCG prototype was designed and fabricated. Series of tests were done by a modified thermal manikin method to validate the heat transfer model and to evaluate the thermal properties. Both experimental and predicted results show that the heat flux components match the heat balance equation with an error of less than 10% at different flowrate. Thermal resistance analysis also manifests that the thermal resistance between the cooling water and the ambient (R2) is more sensitive to the flowrate than to the one between the skin surface and the cooling water (R1). When the flowrate increased from 225 to 544 mL/min, R2 decreased from 0.5 to 0.3 °C m(2)/W while R1 almost remained constant. A spec...Continue Reading

References

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Citations

Sep 14, 2020·International Journal of Sports Medicine·Wafa DouziOlivier Dupuy
Jul 16, 2020·International Journal of Environmental Research and Public Health·Pengjun Xu Udayraj
Jan 28, 2021·ACS Applied Materials & Interfaces·Mohammad Irfan IqbalJinlian Hu
Aug 17, 2021·ACS Nano·Huimin WangYingying Zhang
Mar 21, 2019·ACS Applied Materials & Interfaces·Esfandiar PakdelXungai Wang

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