Accession Number : ADA301490

Title :   A Design and Performance Analysis for the Hot Primary Heat Exchanger (HPX) Using Numerical Analysis.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Muhs, Kevin S.

PDF Url : ADA301490

Report Date : JUN 1995

Pagination or Media Count : 174

Abstract : The Hot Primary Heat Exchanger (HPX), a key component of the ThermoAcoustic Life Sciences Refrigerator, consists of a tube and fin design. The tubing is bent into a serpentine pattern and overlayed on a screen of copper fins. The serpentine pattern results in several flow reversals and complex internal flow geometries within the heat exchanger. The fins are not consistently of uniform length and generally have heat rejection at both ends. This design results in a forced-cooled, single stack cold plate configuration with unequal temperatures at each end of the fin. The analysis of this configuration requires a methodology based upon the existence of an adiabatic point somewhere along the fin between the prime surfaces. Once the location of this adiabatic point is known, the cold plate may be treated on the basis of two isolated surfaces having fins with adiabatic tips.

Descriptors :   *HEAT EXCHANGERS, MATHEMATICAL MODELS, COMPUTERIZED SIMULATION, SOFTWARE ENGINEERING, OPTIMIZATION, THERMODYNAMICS, HIGH TEMPERATURE, MATRICES(MATHEMATICS), AIR FLOW, NUMERICAL ANALYSIS, EFFICIENCY, THESES, MASS FLOW, TEMPERATURE GRADIENTS, MATHEMATICAL PREDICTION, COPPER, THERMAL CONDUCTIVITY, PARTIAL DIFFERENTIAL EQUATIONS, HOT GASES, CONVECTION(HEAT TRANSFER), DESIGN CRITERIA, SURFACE TEMPERATURE, ADIABATIC CONDITIONS, FINS, HEAT TRANSFER COEFFICIENTS, LIQUID COOLING, REFRIGERATION SYSTEMS, DIFFERENTIAL THERMAL ANALYSIS.

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE