Abstract:

Global heat transport for an neonate body is determined by means of heat balance with the term describing evaporation. The heat storage rate is the unbalanced difference between the metabolic heat production and various heat loss mechanisms within all body parts. The most sensitive portion is the head, which forces local optimization of the bonnet thickness. The local problem is described by differential heat and mass transport equations and the set of conditions. The changeable covering area of the bonnet can equalise the global heat balance and prevent hyperthermia or hypothermia.