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Investigating thermal performance of a partly sintered-wick heat pipe filled with different working fluids

Khalili, M ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. Publisher: Sharif University of Technology , 2016
  3. Abstract:
  4. Heat pipes are important cooling devices that are widely used to transfer high heat loads with low temperature differences. In this paper, thermal performance of a novel type of sintered-wick heat pipe, namely, partly sintered-wick heat pipe, was investigated. The heat pipe was filled with degassed water and acetone, as working uids, and effects of filling ratio, orientation, and heat inputs were tested. Moreover, conditions at which dryout occurred were presented. The results showed that the best filling ratio for both working uids is about 20%. The heat pipe filled with water has better thermal performance than that filled with acetone; thus, the thermal resistances of the 20% water-filled heat pipe are approximately 7%, 27%, and 75% lower than those of the 20% acetone-filled one in the vertical, horizontal, and reverse-vertical modes, respectively. This novel type of sinteredwick heat pipe has good thermal performance in the horizontal mode and can be used in no-gravity conditions, i.e. space applications
  5. Keywords:
  6. Partly sintered-wick heat pipe ; Thermal resistance ; Acetone ; Filling ; Heat resistance ; Sintering ; Space applications ; Temperature ; Circumferential grooves ; Cooling devices ; Dry-out ; Filling ratio ; Gravity conditions ; Low-temperature difference ; Thermal Performance ; Working uid ; Heat pipes
  7. Source: Scientia Iranica ; Volume 23, Issue 6 , 2016 , Pages 2616-2625 ; 10263098 (ISSN)
  8. URL: http://www.scientiairanica.com/en/ManuscriptDetail?mid=1692