Accession Number : ADA311676

Title :   Anisotropic Heat-Exchanger/Stack Configurations for Thermoacoustic Heat Engines.

Descriptive Note : Final rept. 1 Oct 93-14 Sep 96,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF PHYSICS

Personal Author(s) : Maynard, Julian D.

PDF Url : ADA311676

Report Date : 31 JUL 1996

Pagination or Media Count : 19

Abstract : The goal of the project was to explore the feasibility of novel configurations of heat pumping elements and heat exchangers for thermoacoustic heat engines, which have high potential for replacing refrigerators using polluting gases. The approach involved anisotropic systems, such as made possible by glass capillary array technology. This approach allows a heat exchange fluid to flow directly across the heat pumping element of the thermoacoustic heat engine (the 'stack'), eliminating the necessity of separate heat exchangers and possibly improving efficiency. The research successfully determined both the theoretical and technological feasibility of the approach, and an actual prototype of an anisotropic stack/heat-exchanger unit was constructed. A part of the project involved the development of high power thermoacoustic refrigerators for testing the new systems. The research resulted in two patent disclosures.

Descriptors :   *THERMODYNAMICS, *HEAT EXCHANGERS, *HEAT ENGINES, HEAT TRANSFER, HIGH POWER, ARRAYS, GLASS, GASES, FEASIBILITY STUDIES, ANISOTROPY, CONFIGURATIONS, ACOUSTIC ARRAYS, FLUIDS, PUMPS, EXCHANGE, STACKING, CAPILLARITY, PATENTS, PUMPING, REFRIGERATION SYSTEMS.

Subject Categories : Thermodynamics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE