Biological skin equivalent heat resistance calculating method considering water loss

Abstract

The invention discloses a biological skin equivalent heat resistance calculating method considering water loss, which comprises the concrete steps of obtaining the sum of convection heat dissipation, radiation heat dissipation, moisture content diffusion heat dissipation and sweat evaporation heat dissipation being equal to the sum of heat conduction amount of a human skin layer from inside to outside and carried heat due to temperature dropping when moisture is discharged to the surface from the inside of a human body according to heat conservation; obtaining a revised equivalent heat resistance R expression; assuming sweat discharged from the human body is evaporated without any slipping off, and a skin diffusion heat capacity and a sweat evaporation heat dissipating capacity are equal to latent vaporization heat capacity of moisture discharged from the inside of the human body, obtaining a water flow rate as shown in the figure per unit area discharged through a skin layer according to the principle, and obtaining the skin diffusion heat capacity and the sweat evaporation heat dissipating capacity according to the prior art; substituting the water flow rate per unit area, the skin diffusion heat capacity and the sweat evaporation heat dissipating capacity into the revised equivalent heat resistance R expression so as to obtain a revised equivalent heat resistance R. The skin equivalent heat resistance obtained through the biological skin equivalent heat resistance calculating method provided by the invention is consistent with an actual rule.

Description

technical field [0001] The invention belongs to the technical field of calculation methods for biological equivalent thermal resistance, and in particular relates to a calculation method for biological skin equivalent thermal resistance considering water loss. Background technique [0002] In general, the thermal resistance of a planar object is obtained by testing according to Fourier's law, that is, through the formula Obtained, in this formula: q represents the heat flux density flowing through the object, W / m 2 ; λ represents the thermal conductivity of the object, W / (m·℃); δ represents the wall thickness of the object, m; Δt represents the temperature difference between the two sides of the object, ℃. According to the above formula, the thermal resistance of the object can be derived as: And this formula shows that as long as the heat flux q flowing through the object and the temperature difference Δt on both sides are measured, the thermal resistance R of the objec...

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