Cryogenic apparatus and method for spraying a cryogen incorporating generation of two phase flow

摘要

n apparatus for spraying a cryogen having a liquid content is claimed. The apparatus comprises at least one spray nozzle 16 positioned to spray a heat load located within a spray zone 20. A heat conductive element 22 is positioned beneath spray zone 20 and has a surface sized to catch overspray formed from the liquid content of the cryogen, thereby to vaporise the overspray through direct heat transfer with heat conductive element 22.