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The heat transfer limit of step-graded metal felt heat pipe wicks.

Author(s) : WILLIAMS R. R., HARRIS D. K.

Type of article: Article

Summary

The heat transfer limit of two control metal fit wicks and two step-graded metal felt wicks was measured and compared with theoretical values. The wicks were planar and fabricated from 316 stainless steel. The working fluid was both water and methanol. The non-graded control wicks were measured to be at or near the wick's capillary heat transfer limit. The step-graded wicks failed much earlier than the theoretical capillary limit for each wick. Additional tests and analyses were conducted determining the failure to be caused from vapour formation within the step-graded wicks whereas the fine top layer trapped the vapour, resulting in failure.

Details

  • Original title: The heat transfer limit of step-graded metal felt heat pipe wicks.
  • Record ID : 2005-1745
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 48 - n. 2
  • Publication date: 2005/01

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