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在45℃高温条件下,应用液冷头盔给10名被试者的头颈部致冷,散热效能较高,可带走安静时30.9％～48.3％的代谢产热。降低身体的热蓄积,减少出汗,减慢心率、直肠温度和皮肤温度的上升速率。对头颈部致冷可降低身体的热紧张度50％～70％,明显改善对温热的舒适感觉。同时表明,致冷液温、流量及液流走向,对致冷效能均有显著影响。为液冷头盔及致冷装置的设计,提供了医学实验依据。
In 45 ℃ high temperature conditions, the use of liquid-cooled helmet to 10 subjects of the head and neck cooling, high cooling efficiency, can take quiet 30.9% ~ 48.3% of the metabolic heat. Reduces body heat buildup, reduces sweating, slows heart rate, rectal temperature, and skin temperature rise rates. Cold head and neck can reduce the body’s thermal tension of 50% to 70%, significantly improve the warm feeling of comfort. At the same time, it is indicated that the cooling liquid temperature, flow rate and flow direction have a significant effect on the cooling efficiency. For the design of liquid-cooled helmets and refrigeration devices, provided a medical experiment basis.