Open AccessExperimental studies of the influence of hydrodynamics on heat transfer at evaporation and boiling of a film irrigating a bundle of horizontal finned tubes
Author(s) -
I. I. Gogonin
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1565/1/012049
Subject(s) - boiling , heat transfer , evaporation , bundle , nucleate boiling , thermodynamics , materials science , mechanics , critical heat flux , vapor compression evaporation , boiling heat transfer , heat transfer coefficient , mechanical engineering , composite material , engineering , physics
A feature of operation of some devices, such as heat pump steam generators, evaporators of refrigerating machine, steam generators of binary freon station, etc., is a low value of specific heat fluxes. Heat transfer regimes occur, when boiling in the film is just beginning and the heat transfer rate during evaporation is comparable to that during boiling. Tube finning is a well-proven way to intensify heat transfer, both during evaporation and boiling. However, there are insufficient data on the choice of finning parameters and methods for evaluating heat transfer during boiling of a film that irrigates a bundle of finned tubes. This paper presents an algorithm for calculating heat transfer during evaporation and boiling of a film that irrigates a bundle of finned tubes, and compares the calculated and experimental data. The calculated parameters turn out to coincide satisfactorily with the experimental data.