ВКК-15К一体化防护装备不通风时的热负荷评定  

Thermal evaluation of ВКК 15К integrated protective equipment without ventilation

作　　者：任兆生[1] 欧阳骅[1] 李伟[1] 李俊勤[1] 王琼[1] 

机构地区：[1]空军航空医学研究所

出　　处：《中华航空航天医学杂志》1998年第3期154-156,共3页Chinese Journal of Aerospace Medicine

摘　　要：目的研究ВКК－１５К一体化高空防护装备（Ｃ组）的热负荷，并将其与普通飞行装备（Ａ组）及ＫＨ－３型抗荷服（Ｂ组）的热负荷作对比。方法６名男性青年受试者分别在舒适环境和４０℃环境中穿着Ａ、Ｂ、Ｃ３组装备各９０ｍｉｎ。测定隔热值、蒸发散热指数和综合热应激指数。结果Ａ、Ｂ、Ｃ组装备的总隔热值（Ｉｔ，ｃｌｏ）分别为１．３３、１．５８和２．０５，相互间有非常显著性差异（Ｆ＝８３．８８，Ｐ＜０．０１）。３组的透湿指数（ｉｍ）在０．４１～０．４６之间，无显著性差异。３组的蒸发散热效能指数（ｉｍ／Ｉｔ）分别为０．３２、０．２６和０．２２，相互间有非常显著性差异（Ｆ＝５９．０９，Ｐ＜０．０１）。受试者在４０℃热环境中穿Ｃ组装备６０ｍｉｎ时综合热应激指数（ＣＩＨＳ）为５．４８，属中度热应激；９０ｍｉｎ时ＣＩＨＳ为６．４０，属重度热应激。均较穿Ａ、Ｂ组装备时明显为高。结论飞行员在热环境下穿ВКК－１５К一体化高空防护装备无通风时。Objective To explore the thermal strain during wearing ВКК 15К integrated altitude protective equipment (assembly C),in comparison with those during wearing ordinary flying equipment (assembly A) and KH 3 anti G suit(assembly B). Methods Six young male subjects were asked to wear assembly A,assembly B,and assembly C in comfortable environment and 40 ℃ for 90 min respectively.Thermal insulation values(I t),evaporative heat loss indexes and combined index of heat stress(CIHS) were determined. Results I t(clo) of assembly A,assembly B and assembly C was 1.33 ,1.58,and 2.05 respectively. I t (clo) of assembly C was significantly higher than those of assembly A and B ( F =83.88 ,P<0.01). Vapor permeability (i m) of assembly A,B,and C ranged from 0.41 to 0.46 .The differences among them were nonsignificant.i m/I t of assembly A,B,and C was 0.32 , 0.26 ,and 0.22. The differences among them were significant ( F= 59.09 ,P <0.01 ) . The CIHS of the subjects wearing assembly C in 40℃ for 60 min was 5.48 (corresponding to moderate heat stress);when the time was prolonged to 90 min,the CIHS raised to 6.40 (corresponding to serious heat stress).Both values were significantly higher than those when wearing assembly A and B. Conclusion Pilots wearing ВКК 15К integrated protective equipment without ventilation in hot environment will suffer from moderate to serious degree of heat stress.

关 键 词：防护服 飞行员 热负荷评定 

分 类 号：R852.51[医药卫生—航空、航天与航海医学] R852.81[医药卫生—临床医学]