Swing-like pool boiling on nano-textured surfaces for microgravity applications related to cooling of high-power microelectronics.

ABSTRACT: Here, we demonstrate that heat removed in pool boiling from a heater mimicking high-power microelectronics could be used to facilitate a swing-like motion of the heater before being finally dissipated. This swing-like motion could be beneficial for shedding a large vapor bubble that encapsulates high-power heaters in microgravity where buoyancy force is unavailable for vapor bubble removal. The swing-like motion is propelled by vapor bubble recoil, the force which exists irrespective of gravity and buoyancy. We also demonstrate that this force could be significantly enhanced by depositing on the heater surface supersonically blown polymer nanofibers with cross-sectional diameters below 100 nm. These nanofibers provide additional nucleation sites, resulting in much more frequent bubble nucl

SUBMITTER: Sinha-Ray S 

PROVIDER: S-EPMC5460202 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature