Mankind and heat - Heat balance - Heat transport by convection

3 important questions on Mankind and heat - Heat balance - Heat transport by convection

How can we write the convective heat flux for the body?

Phi_cv = Phi_cv,sk + Phi_cv_resp

Considering a naked person. How can the heat flow be written? (The size of the heat flow is proportional to the temperature difference between the skin and air, and is proportional to the skin's surface which is in contact with it)

Phi_cv,sk = A_cv,sk * h_cv,sk * (theta_sk - theta_a)

How can the heat flux by conection through respiration be described?

Phi_cv,resp = rho*c_p*V(theta_resp-theta_a)

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