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
Distribution Statement : APPROVED FOR PUBLIC RELEASE