ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Temperature Distribution of a Low Temperature Heat Pipe with Multiple Heaters for Electronic Cooling

  • Published : 1998.12.15
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Abstract

A numerical study has been performed to predict the characteristics on the transient operation of the heat pipe with multiple heaters for electronic cooling. The model of the heat pipe was composed of the evaporator section with four heaters, insulated transport section, and the condensor section with a conductor which is cooled with uniform heat flux condition to surrounding. The governing equations and the boundary conditions were solved by the generalized PHOENICS computational code employing the finite volume method. Two test cases are investigated in present study; Case 1 indicates that the 1st and 2nd heaters among four heating sources are heated off, while the 3rd and 4th heaters are heated on. Case 2 is the inverse situation switched from heating location of Case 1. The results show that the transient time to reach the steady state is shorter for Case 1 than for Case 2. Especially, the temperature difference of the heater during switching operation is relatively small compared to the maximum allowable operating temperature difference in electronic system. Hence, it is predicted that the heat pipe in present study operates with thermally good reliability even for switching the heaters.

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References

  1. J. Appl. Physics v.6 Structures of Very High Thermal Conductance Grover, G.;Cotter, T.P.;Erikson, G.F.
  2. Heat Pipes Dunn, P.D.;Reay, D.A.
  3. Heat Pipe Science and Technology, Taylor & Francis Faghri, A.
  4. KSME v.36 no.4 Thermal Management and Cooling Technology of Electronic Packaging in the ISDN Communications Kim, W.T.
  5. Int'l Journal of Heat Mass Transfer v.33 no.9 An Analysis of the Vapor Flow and the Heat Conduction through the Liquid-Wick and Pipe Wall in a Heat Pipe with Single or Multiple Heat Source Chen, M.M.;Faghri, A.
  6. Journal of Heat Transfer v.113 Experimental and Numerical Analysis of Low-Temperature Heat Pipes with Multiple Heat Sources Faghri, A.;Buchko, M.
  7. Journal of Heat Transfer v.113 A Study of High-Temperature Heat Pipes with Multiple Heat Sources and Sinks: Part I-Experimental Methodology and Frozen Startup Profiles Faghri, A.;Buchko, M.;Cao, Y.
  8. Journal of Heat Transfer v.113 A Study of High-Temperature Heat Pipes with Multiple Heat Sources and Sinks: Part II-Analysis of Continuum Transient and Steady State Experimental Data with Numerical Predictions Faghri, A.;Buchko, M.;Cao, Y.
  9. Proc. of the KSME 1996 Spring Annual Meeting B A Numerical Study on the Heat Pipe with Switched Heat Source and Sink for Space Application Park, J.H.;Lee, J.H.
  10. Proc. of 25th ASME National Heat Transfer Conference v.1 Transient Compressible Heat-Pipe Vapor Dynamics Bowman, W.J.;Hitchcock, J.
  11. Numerical Heat Transfer v.18 Transient Two-Dimensional Compressible Analysis for High Temperature Heat Pipies with a Pulsed Heat Input Cao, Y.;Faghri, A.
  12. Phoenics Training Course Notes CHAM TR/300 Rosten, H.I.;Spalding, D.B.
  13. Numerical Heat Transfer v.16 A Numerical Analysis of the Effects of Conjugate Heat Trensfer, Vapor Compressibility, and Vicous Dissipation in Heat Pipes Faghri, A.;Chen, M.M.
  14. Journal of Heat Transfer v.112 Porosity and Effective Thermal Conductivity of Wire Screens Chang, W.S.
  15. Air Cooling Technology for Electronic Equipment Kim, S.J.