Micro/Miniature Heat Pipe Analysis.

Abstract

Analysis presented in this report shows that longitudinal groove designs are crucial to increase the heat transport capacity of miniature heat pipes. Furthermore vapor continuum limitation for a micro heat pipe operation is also defined and presented. The steady-state mathematical models of a micro heat pipe operation and miniature axially-grooved heat pipe are developed where the importance of the interfacial phenomena at the surfaces of the ultra-thin films is emphasized. The predicted capillary and boiling limitations as well as the thermal resistances are compared to existing experimental data on micro, miniature and conventional axially-grooved heat pipes. It is found that flat miniature heat pipes are easily capable of withstanding heat fluxes on the order of 40 w/ sq cm on the evaporator wall. jg

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1994
Accession Number
ADA292232

Entities

People

  • Amir Faghri
  • Dmitry Khrustalev

Organizations

  • Wright State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Experimental Data
  • Films
  • Fluid Dynamics
  • Fluid Flow
  • Geometry
  • Heat Energy
  • Heat Pipes
  • Heat Transfer
  • Materials
  • Steady State
  • Temperature Gradients
  • Thermal Resistance
  • Thermodynamics
  • Thin Films
  • Transition Temperature

Fields of Study

  • Chemistry
  • Engineering

Readers

  • Combustion and Flow Dynamics.
  • Systems Analysis and Design
  • Thermal Physics or Thermal Science.