Effects of Ventilation Temperature on Thermal Protection Performance of General Ventilation Garment
Li Heng
Qiu Yifen
Jiang Nan
Zou Lei
Peng Hua
Jiang Haibin
Abstract：Objective To study the effects of the ventilation temperature in ventilation garment on the properties of human thermal protection.Methods Based on the mass and heat transfer analysis of the man-garment-environment system,the human thermoregulation simulation model under ventilation condition was developed.Then experimental research was conducted to verify the model.Results The experiment proved that the proposed model was reliable and accurate.At low flow rate,a higher inlet ventilation temperature could induce rapid body temperature raise and more obvious sweat,so the heat dissipation effect was better.At high flow rate,a lower inlet ventilation temperature could reduce body heat stress obviously,but the body only produced less sweat,so it was not well to heat dissipation by evaporation in the ventilation garment.In addition,more cold system source was required.Conclusion At definite ventilation flow rate,the inlet temperature should be higher to initiate body sweat and enhance evaporative heat dissipation.The inlet ventilation temperature should be properly designed according to the system demand.
Keywords：ventilation garmentthermal protectionprotection performanceheat stressnumerical simulation
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)