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Information × Registration Number 0211U009372, 0110U001318 , R & D reports Title Creation of scientific and technological foundations for the development of advanced high-perfomance heat transfer surfaces popup.stage_title Head Tuz Valeriy O., Registration Date 06-12-2011 Organization Faculty of аircraft and space systems NTUU "KPI" popup.description2 Research object: new flat-oval tubes with incomplete fins. Purpose research of local descriptions of heat and mass transfer processes in the surfaces of heat exchange made from the profiled tubes with incomplete transversal fins. Development of methods of heat and aerodynamic calculations of the surface of heat exchange in offered type, taking into account local descriptions of processes of transfer. Research methods - definition of average heat transfer coefficients based on the results of measurements of the temperature field of fin and carrier tube wall. Scientific novelty - the first study of heat transfer regularities on surfaces of flat-oval tubes with incomplete fins. The influence of basic geometric and operational parameters on the intensity of heat transfer and aerodynamic resistance of the bundles found. Obtained correlations for the calculation of convective heat transfer and aerodynamic drag. Practical value - use of surfaces of the flat-oval tubes with incomplete fins instead of the surfaces of circular finned tubes for the same cost of power to move the coolant can increase heataerodynamic efficiency by 20 - 20%. Aerodynamic resistance of bundles of plane-oval finned tubes in the 1.4 - 1.5 times less than that of the bundles of circular finned tubes with the same geometric characteristics. Industries - dry cooling towers, air condensers, air-cooling technology products, boiler economizers. Product Description popup.authors Баранюк О.В. Рогачов В.А. Семеняко О В. Терех О.М. popup.nrat_date 2020-04-02 Close