Abstract:

In order to understand the law of temperature change inside the tent, the personnel required clothing insulation(IREQ) and the risk of hypothermia in a cold environment, the national standard disaster relief tent and epidemic prevention tent were used to carry out experimental research in the environment from -10 to 10 ℃ using the thermal manikin to explore the thermal insulation performance of different types of tents. The empirical formula was used to evaluate the thermal comfort of personnel inside the tent. The improvement effect of the heated clothing on the body area was analyzed according to the thermal resistance of clothing on the heat exchange process between people and the environment influence, the temperature change of various parts of the thermal manikin. Research shows that: the national standard disaster relief tent has better insulation performance than the epidemic prevention tent, and the difference was greater when the temperature was lower. The thermal comfort of people inside the tent decreases with the temperature, and the floor temperature has a great impact on the local dissatisfaction rate of the human body. When the clothing thermal resistance was lower than the demand thermal resistance, the temperatures of the left forearm and right calf of the thermal manikin decrease the most, by 4.7 ℃ and 5.3 ℃, respectively. When the heating suit was turned on, the clothing temperature of the covered area rose significantly. When the ambient temperature dropped to -10 ℃, the temperature of the thermal manikin still dropped significantly in all areas, even when the 45 ℃ heating gear was turned on, with dropped by 5.3 ℃ in the left forearm and around 6.5 ℃ in the right forearm.

Key words: cold environments, thermal manikin, tents interior, thermal comfort, required thermal resistance, risk of hypothermia