• A.N. Gershuni National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"
  • Ye.N. Pysmennyy National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"
  • A.P. Nishchik National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"
Keywords: heat exchanger of evaporation-and-condensation type, optimization of design characteristics, minimization of heat-exchanging surface.


The paper is relevant to optimization of the performance of gas-to-gas heat exchangers based on vertical transversely finned heat-transferring elements of evaporation-and-condensation type. The correlations taking into account the regularities of heat transfer for estimation of optimal ratio of the lengths of evaporation and condensation zones, under which the heat-transfer system has the minimum transferring surface corresponding to the specified conditions, were obtained.


1. Semena M.G., Gershuni A.N., Zaripov V.K. [Heat pipes with metal fiber capillary structures], Kyiv, [High Schoo]l, 1984, 216 p. (Rus.)
2. Zohuri B. Heat Pipe Design and Technology. Second Edition, Switzerland, Springer, 2016, 513 p.
3. Bezrodnyy M.K., Pioro I.L., Kostiuk T.O. [Processes of transfer in two-phase thermosyphon systems], Kyiv, [Fact], 2003, 480 p. (Rus.)
4. Gershuni A.N., Nishchik A.P. [Elaboration and inculcation of effective heat recoverers based on heat transferring elements of evaporation-condensation type], [Industrial Heat Engineering], 1997, V.19, No.6, P.69-73. (Rus.)
5. Gershuni A.N., Pysmennyy Ye.N., Nishchik A.P. [Evaporation-condensation devices for passive heat removal systems in nuclear power engineering],[ Nuclear and Radiation Safety], 2017, No.1(73), P.16-23. (Rus.)
6. Gershuni A.N., Nishchik A.P. [A comparative analysis of heat transfer capabilities of evaporation-condensation type heat exchangers and recuperative tube-type heat exchangers], [Industrial Heat Engineering], 2010, V.32, No.3, P. 28-36. (Ukr.)
7. Pysmennyy Ye.N. [Heat exchange and aerodynamics in the package of transversely finned tubes], Kyiv, [Alterpres], 2004, 244 p. (Rus.)
8. Pysmennyy Ye.N. [Estimation of convective transversely finned heating surfaces], Kyiv, [Alterpres], 2003, 184 p. (Rus.)
9. Labuntsov D.A. [The aspects of heat exchange in nucleate boiling of liquid], [Thermal Engineering], 1972, No.9, P.14-19. (Rus.)
10. Isachenko V.P. [Condensation heat exchange], Moscow, [Energy], 1977, 240 p. (Rus.)

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How to Cite
Gershuni, A., Pysmennyy, Y., & Nishchik, A. (2019). OPTIMIZATION OF EVAPORATION-AND-CONDENSATION HEAT-EXCHANGER PERFORMANCE. Thermophysics and Thermal Power Engineering, 41(2), 41-47. https://doi.org/https://doi.org/10.31472/ttpe.2.2019.6
District and Industrial Heat Power, Renewable Energy Systems, Energy Efficiency