A new model for heat flow through macrolayer in pool boiling at high heat flux

Abstract

An analytical heat transfer model for transient one-dimensional heat flow through a decreasing thickness macrolayer and with an invariant impressed heat flux at the heated solid-macrolayer interface has been numerically solved. The model predicts the average conduction heat flow rates at the liquidvapour interface for water and methanol that are in excellent agreement with experimental values of input heat flux. It is shown that a non-dimensional parameter Z 0 may be used as an index of the combined effect of the physical parameters namely, initial macrolayer thickness, initial wall superheat and the impressed heat flux, on the conduction heat flux across the liquid layer.