Numerical analysis on heat transfer characteristics of composite films for human thermal regulation
The effective combination of phase change materials(PCM)and fabrics can achieve efficient thermal regulation of the human body.The heat transfer characteristics of PCM composite films were discussed based on the transient thermal analy-sis method.The effects of PCM on the temperature field and heat flux distribution of the composite film in the heat transfer process were revealed.The influence of the mass fraction and latent heat of the PCM on the transient heat transfer performance of the composite film were analyzed.The results show that the phase change endothermic of the PCM greatly changes the temperature and heat flux distribution of the composite film,and effectively reduces the temperature and heat flux of the composite film.The overall temperature and heat flux of composite film are significantly reduced with the increase of latent heat and mass fraction of the PCM.This has important theoretical basis for the efficient application of PCM to improve human thermal management.
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