Evaluation of Electrical Heating Performance and Thermal Insulation of Commercial Electrically Heated Inner Suit for a Dry Immersion Suit

서지정보

· 발행기관 : 한국섬유공학회
· 수록지 정보 : 한국섬유공학회지 / 58권 / 2호 / 87 ~ 98페이지
· 저자명 : 김혜림, 이선희

초록

In this study, the electric heating performance of a smart heated inner suit wasevaluated as basic data for localization of a dry immersion suit being developed abroad toprevent hypothermia, and its thermal insulation capability was analyzed using a thermalmannequin. Accordingly, two types of smart heated inner suits, namely a dry suit (Suit_IN)and a dry immersion suit (Suit_OUT), were selected along with a location for measuringthe thermal insulation in accordance with KS V ISO 15027-3. Then, the surface and innertemperatures of the suits were measured, and the thermal resistance and thermal insulationproperties were analyzed using the mannequin. Upon supplying power, the innertemperature of Suit_IN was approximately 45 °C, with a slightly higher value of about 53 °Cin the stomach area. In addition, it was confirmed that the hand portions had the highesttemperature of approximately 55 °C. After wearing Suit_IN and Suit_OUT, the inner temperatureof the hand part increased by approximately 25 °C compared to wearing onlySuit_IN, whereas the temperatures of the other parts improved by 5-10 °C, thereby improvingthe total heat generation performance. To confirm the thermal insulation of each partfor each sample, measurements were obtained using a thermal mannequin under environmentalconditions similar to the underwater environment in winter. The thermal resistancewas observed to be large in and around the stomach area where power was supplied, andthe thermal resistances of the hand and foot areas were low owing to the presence ofopenings. In addition, the thermal insulation property (Clo) when wearing both Suit_INand Suit_OUT was approximately twice that of wearing only a single suit. Therefore, wearingboth suits would enable maintaining the body temperature and preventing hypothermiain extreme underwater environments.

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