Capillary pumped loop heat spreader for electronics cooling

Jaewon Chung, Costas P. Grigoropoulos, Ralph Greif

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


As cooling requirements for electronic devices, e.g. computer processor units, power modules, etc. increase beyond the capabilities of air-cooling, interest has moved to several alternatives such as thermoelectric coolers, impinging jets and heat exchangers with phase change. Included among these, the capillary pumped loop is a very competitive cooling device, because of its performance reliability, no power requirements and low manufacturing cost. In this paper, a heat spreader employing capillary pumped loop principles was made of aluminum and copper and tested. The copper CPL heat spreader with heat sinks and fans on the condenser (86mm thick, 60mm wide, 181mm long) has demonstrated a cooling capacity of 640W at atmospheric pressure in the vertical orientation and maintains a difference between TIHE (temperature of the interface between heater and evaporator) and TAME (ambient temperature) lower than 100°C.

Original languageEnglish
Pages (from-to)283-290
Number of pages8
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Issue number7
Publication statusPublished - 2001
Externally publishedYes
Event2001 ASME International Mechanical Engineering Congress and Exposition - New York, NY, United States
Duration: 2001 Nov 112001 Nov 16


  • Capillary pumped loop
  • CPU
  • Heat spreader
  • IGBT
  • Phase change
  • Porous sheet
  • Thermal management

ASJC Scopus subject areas

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


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