Capillary structures mechanical properties in respect to functioning conditions in heat pipes

Authors

  • Владимир Юрьевич Кравец National Technical University of Ukraine "Kyiv Polytechnic Institute" 37, Prospect Peremohy, 03056, Kyiv-56, Ukraine, Ukraine
  • Дмитрий Владимирович Кравец Institute of Specialized Equipment and Expertise of Security Service of Ukraine Str. Vasilenko, 3, Kiev, Ukraine

DOI:

https://doi.org/10.15587/2312-8372.2013.12107

Keywords:

capillary structure, limiting accuracy, ultimate strength, heat pipe

Abstract

Mechanical properties of capillary structures and their reliable attachment to the inner surface of heat pipes play an important role in a wide temperature range. Reliability of operation of heat pipes depends on the strength of the capillary structure. The article presents the results of an experimental study of the effect of various parameters on the mechanical properties of metal-fiber capillary structure made of stainless steel. The studies of the break of capillary structure were carried out on a special test bench that helped to determine with high accuracy the elongation of the samples under mechanical loads. We have studied two types of capillary structures with diameters of fibers 8 and 30mkm and porosity in the range of 88% to 98%. The results showed that the strength of the structure depends heavily on the fiber diameter, porosity and temperature. The decrease of the fibers diameters, increase of porosity and temperature aggravated the mechanical properties of capillary structures. These results can be used by designers of heat pipes, who operate in a wide temperature range.

Author Biographies

Владимир Юрьевич Кравец, National Technical University of Ukraine "Kyiv Polytechnic Institute" 37, Prospect Peremohy, 03056, Kyiv-56, Ukraine

Ph.D., associate professor

Department of Nuclear Power Plants and engineering thermal physics

Дмитрий Владимирович Кравец, Institute of Specialized Equipment and Expertise of Security Service of Ukraine Str. Vasilenko, 3, Kiev

Research associate

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Published

2013-02-27

How to Cite

Кравец, В. Ю., & Кравец, Д. В. (2013). Capillary structures mechanical properties in respect to functioning conditions in heat pipes. Technology Audit and Production Reserves, 1(1(9), 24–28. https://doi.org/10.15587/2312-8372.2013.12107

Issue

Vol. 1 No. 1(9) (2013): Technology audit and production reserves

Section

Technology audit

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Copyright (c) 2016 Владимир Юрьевич Кравец, Дмитрий Владимирович Кравец

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