The increasing use of highly integrated circuits in portable electronics, which may operate for relatively short periods of time, has opened the possibility of utilizing heat storage to maintain device temperatures below reliability limits. The present study considers a strategy in which the power dissipation of a device is periodically reduced and increased in order to decrease its peak temper...

Using a one-dimensional radiative-convective model, we perform a sensitivity study of the effect of ozone depletion in the stratosphere on the surface temperature. There could be a cooling of the surface temperature by -0.2 K due to chlorofluoromethane-induced ozone depletion at steady state (assuming 1973 release rates). This cooling reduces significantly the greenhouse effect due to the prese...

Free convection of power-law liquids in partially filled two-dimensional square containers in upright position is investigated numerically, using a finite element method. Different but constant temperatures are imposed on the container’s side walls; its bottom face is insulated while the liquid body’s free surface is subjected to convective cooling. Flow velocity and heat transfer rates at the ...

Emperor penguins Aptenodytes forsteri are able to survive the harsh Antarctic climate because of specialized anatomical, physiological and behavioural adaptations for minimizing heat loss. Heat transfer theory predicts that metabolic heat loss in this species will mostly depend on radiative and convective cooling. To examine this, thermal imaging of emperor penguins was undertaken at the breedi...