Water mist / air jet cooling of a heated plate with variable droplet size

Abstract

Mist jets, which involve the addition of a fine water mist to an air flow, have the potential to improve on the heat transfer performance of impinging air jets. Much is already known about the heat transfer characteristics of impinging air jets, and they are widely used in many engineering applications. This project seeks to improve the understanding of mist jets and provide heat transfer correlations and identify the heat transfer mechanism involved. To date a fully functional test rig has been built and calibrations and initial tests carried out. Comparison of the heat transfer characteristics of these mist jets with previous literature on both air and mist jets is underway.