Journal of Thermal Science

, Volume 27, Issue 5, pp 440–448 | Cite as

Spring Inserts for the Intensification of the Heat Exchange Process during Boiling in Vertical Tubes—Optimization of Geometric Parameters

  • Beata Niezgoda-ŻelaskoEmail author


The paper presents new criteria for calculation of heat transfer coefficients and flow resistance during boiling inside vertical tubes with spring inserts, developed on the basis of own experimental research. Calculations of the geometric parameters of the spring insert were carried out using the Nelder-Mead optimization method for various optimization criteria (maximizing the increase ratios for heat transfer coefficient and flow resistance, minimizing entropy, own optimization criterion). The results of optimization calculations were verified by the optimization procedures available in Statistica.


boiling heat transfer flow resistance spring inserts optimization 


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The study was performed as part of research project N N512 458040, funded by the Polish National Science Centre.


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Copyright information

© Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Faculty of Mechanical Engineering, Institute of Thermal and Process EngineeringCracow University of TechnologyCracowPoland

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