摘要
利用简化传热模型,以皮肤表面温度为参考,研究了相变防护服在0℃海水及火场两种极端条件下的防护性能与相变材料的潜热、熔点及厚度的关系.研究发现相变防护服在极端温度条件下具有良好的防护性能,可大大延长相关人员的作业时间;所选相变材料的熔点和潜热对相变防护服的性能有重要影响,潜热大且熔点高的相变材料的防护性能好;在重量允许的范围内相变防护服的性能随厚度的增加有明显提高.
With the skin surface temperature as reference, a simplified heat transfer model was set up to investigate the relationship between the performance of the phase change protective clothing and the latent heat, melting point and thickness of PCM layer in two extreme environments：O℃ sea water and fire. It is found that the phase change protective clothing has excellent protective performance in both environments, significantly prolonging the the time of operation by the wearer. The melting point and latent heat of the selected PCM have important influences on the performance of the protective clothing. With the weight below the permitted limitation, the performance can be improved with the increase of the PCM thickness.
基金
国家自然科学基金(50402009)
安徽省自然科学基金(050440201)资助项目.
关键词
相变材料
相变防护服
海水
火场
PCM
phase change protective clothing, sea water
fire environment
