Patent Number: 7,707,841

Title: Phase cooling method and apparatus

Abstract: A method and apparatus for cooling a workpiece, tool or the like by subjecting the workpiece, tool or the like to a coolant that has been heated to have a temperature near the temperature at which the coolant changes phase from liquid to gas. Thus, the coolant can quickly draw a substantial amount of heat from the workpiece, tool or the like in order to effect a phase change from liquid to gas. Typically, the coolant is preheated to within a predefined range of the phase change temperature, such as within 5.degree. C. or even 1.degree. C.

Inventors: Turner, Jr.; Garth Elzy (Semmes, AL)

Assignee: Northrop Grumman Ship Systems, Inc.

International Classification: F28C 1/00 (20060101)

Expiration Date: 5/04/12018