Towards a durable polymeric internal coating for diabatic sections in heat pipes

In this work the effect of surface wettability in pool boiling heat transfer is studied. The pool boiling phenomena is characterized by three important parameters: onset boiling temperature (T_ONB), the heat transfer coefficient (HTC) and the critical heat flux (CHF). All these parameters are influenced by the wettability characteristics of the surface. This work analyses the effects of surface wettability on these three parameters and proposes a new super-hydrophobic polymeric coating which can have a very important effect in improving the heat pipe start-up power load and increasing the thermal performance of heat pipes when the flux is lower than the critical heat flux.