RESUMO

The article presents the results of many years' (since 1972) research of the structural, hydrodynamic, thermophysical, and mechanical properties of metal felt capillary structures (MFCS) of heat pipes (HP). These structures were made from discrete copper, stainless steel, or nickel sintered fibers of 0.002 to 0.01-m length and diameter within 20 to 70 µm. They were intended for HP with copper, stainless steel, nickel, titan, nickel silver, and ceramic shells and filled with such heat carriers as nitrogen, ammonia, water, ethanol, methanol, acetone, sodium, etc. The HP worked in the range of temperatures from the cryogenic level (−190°C) to high temperatures (+800°C). Analytical and experimental research is made by the authors from the National Technical University of Ukraine "Kyiv Polytechnic Institute" (Kyiv, Ukraine) supervised by Dr., Prof. M. Semena. On the basis of this research the functional dependences are obtained for implementation into engineering calculations of the heat-transfer characteristics of HP. The proposed design of rational HP with MFCS and elaborated technology of their fabrication made it possible to create and implement a variety of heat pipes and systems on their basis for different fields of application.