Accession Number : ADA297420

Title :   Properties of Working Fluids for Thermoacoustic Refrigerators.

Descriptive Note : Annual rept. 1 Oct 94-30 Sep 95,

Corporate Author : NATIONAL INST OF STANDARDS AND TECHNOLOGY GAITHERSBURG MD

Personal Author(s) : Moldover, Michael R. ; Gillis, Keith A.

PDF Url : ADA297420

Report Date : 01 AUG 1995

Pagination or Media Count : 108

Abstract : The objective of this project is to provide thermophysical property data for candidate working fluids in a form suitable for optimizing the design of thermoacoustic refrigerators. The data will be provided in a computer program that calculates the properties of the most promising gas mixtures. This package will consist of currently available data from the literature (provided that it is of sufficient quality) and our own measurements (when insufficient literature data exist). The properties provided are viscosity, thermal conductivity, Prandtl number, density, speed-of-sound, specific heat, enthalpy, and entropy for temperatures between -20 and 30 C and pressures up to 20 bars. We will also explore methods of varying the composition of the working fluid to maintain a constant speed of sound over the operating range of the refrigerator. (MM)

Descriptors :   *ACOUSTIC DATA, *REFRIGERANTS, *REFRIGERATION SYSTEMS, *THERMOPHYSICAL PROPERTIES, COMPUTER PROGRAMS, DENSITY, TEMPERATURE, VAPOR PHASES, GAS DYNAMICS, THERMAL CONDUCTIVITY, PRESSURE, FLUIDS, HELIUM, VISCOSITY, ACOUSTIC VELOCITY, ENTHALPY, XENON, ENTROPY, PRANDTL NUMBER, VISCOMETERS.

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE