The influence of oxygen-helium mixture properties on the human heat loss in the hyperbaric environment

摘要

The properties of gas mixture exert a large effect on thermal exchange from the human body and finally on the comfort temperature in the hyperbaric environment. Equations describing density, viscosity, specific heat capacity, thermal conductivity of real gas mixture as the function of helium contents, temperature and the total gas pressure were derived. It makes possible to improve the comfort equation and finally to determine the comfort temperature and heat losses from the human body more precisely.