Accession Number : ADD020410


Title :   Cooling Acoustic Transcucer with Heat Pipes


Descriptive Note : Patent application, filed 29 Jul 2009


Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC


Personal Author(s) : Ruffa, Anthony A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/d020410.pdf


Report Date : 19 Jul 2009


Pagination or Media Count : 22


Abstract : A transducer with a closed heat pipe is provided with a hot surface and a cold surface. The hot surface is in contact with the transducer interior and the cold surface is in contact with a cooler contact area. A fluid is used in the pipe which boils at the temperature of the hot surface and condenses at the temperature of the cold surface. A wick inside the heat pipe facilities the return by capillary action of the condensed fluid to the hot end. The heat pipe can be evacuated to adjust the boiling temperature of the fluid. A variant involves drilling additional holes into ceramic rings and inserting heat pipes. Increasing the heat pipe length into the tail mass and the piston increases the cool region for the fluid to condense; thereby improving the performance of the transducer.


Descriptors :   *ELECTROACOUSTIC TRANSDUCERS , *PATENT APPLICATIONS , *HEAT PIPES , COOLING , CERAMIC MATERIALS


Subject Categories : Acoustics
      Thermodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE