CONFINED SINGLE-JET AND MULTIPLE-JET IMPINGEMENT HEAT-TRANSFER .2. TURBULENT 2-PHASE FLOW

The single-phase confined and submerged jet impingement heat transfer studies presented in Part I are here extended to two-phase flows with Freon R-113. Correlations are developed showing the influence on heat transfer of jet Reynolds number, flow quality, plate spacings and, for multiple jets, pitch-to-jet diameter ratio. In all cases the Nusselt numbers obtained are referenced back to single-jet, single-phase conditions. It is shown that the heat transfer rate can be improved significantly over that possible with a single-phase liquid operating with the same geometry although, depending on the configuration, the pressure drop encountered with two-phase cooling may not be acceptable.