Accession Number : ADA296232

Title :   Thermoacoustic Pin Stack.

Descriptive Note : Summary rept. 1 Jun 94-31 May 95,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF PHYSICS

Personal Author(s) : Keolian, Robert M.

PDF Url : ADA296232

Report Date : 07 JUL 1995

Pagination or Media Count : 8

Abstract : The construction of a new stack geometry for thermoacoustic engines, called a 'pin stack', is progressing. The stack is at the heart of a class of heat engines that use sound to deliver refrigeration, or use a temperature difference to generate sound. Calculations show that the pin stack should make useful improvements in engine efficiency. About 2300 wires are being hand sewn in a nearly hexagonal lattice between hot and cold heat exchangers. Accuracy of the placement of the wires is on the order of 10-20%. It was found, through simulation, that the pin stack is more sensitive to operating conditions than is a conventional stack.

Descriptors :   *HEAT EXCHANGERS, *ACOUSTIC ARRAYS, *HEAT PUMPS, *HEAT ENGINES, SIMULATION, THERMODYNAMICS, ACCURACY, EFFICIENCY, TEMPERATURE GRADIENTS, GEOMETRY, ACOUSTIC SIGNALS, PINS, STACKING.

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Acoustics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE