Experimental study of heat and mass transfer coefficients at heat recovery of steam-gas flow in the torch of drops of mechanical nozzle

Authors

  • Артур Юрьевич Рачинский National Technical University of Ukraine “Kiev Polytechnic Institute” Pobedy ave, 37, Kiev, Ukraine, 03056, Ukraine https://orcid.org/0000-0001-6622-1517
  • Михаил Константинович Безродный National Technical University of Ukraine “Kiev Polytechnic Institute” Pobedy ave, 37, Kiev, Ukraine, 03056, Ukraine https://orcid.org/0000-0002-0788-5011
  • Николай Никифорович Голияд National Technical University of Ukraine “Kiev Polytechnic Institute” Pobedy ave, 37, Kiev, Ukraine, 03056, Ukraine https://orcid.org/0000-0002-9332-9723
  • Петр Алексеевич Барабаш National Technical University of Ukraine “Kiev Polytechnic Institute” Pobedy ave, 37, Kiev, Ukraine, 03056, Ukraine https://orcid.org/0000-0002-1252-494X

DOI:

https://doi.org/10.15587/1729-4061.2015.55484

Keywords:

contact heat-recovery unit, centrifugal nozzle, heat and mass transfer coefficient, mass transfer coefficient, steam volume fraction

Abstract

The paper deals with the experimental study of heat and mass transfer processes in contact heat-recovery drop-type units using mechanical centrifugal nozzle as a fluid sprayer.
The intensity of heat and mass transfer in contact gas-drop unit with the centrifugal nozzle at the waste-heat recovery of power units was experimentally determined. The studies were carried out in a range of excessive water nozzle pressure (0.2–0.6) MPa and the steam volume fraction of the steam-gas mixture at the inlet of the unit from 0,08 to 0,35. According to the results of experimental studies, heat and mass transfer coefficients that were attributed to the real surface of the drops were determined.
The results of experimental studies of heat and mass transfer coefficients were compared with a single drop. It was found that the heat transfer intensity for drops of the fluid with the steam-gas flow is higher than for a single drop and lower for the mass transfer. Generalizing dependences for heat and mass transfer processes for the torch of the spray cone drops were obtained.

Author Biographies

Артур Юрьевич Рачинский, National Technical University of Ukraine “Kiev Polytechnic Institute” Pobedy ave, 37, Kiev, Ukraine, 03056

PhD student

Department of Theoretical and Industrial Heat Engineering

Михаил Константинович Безродный, National Technical University of Ukraine “Kiev Polytechnic Institute” Pobedy ave, 37, Kiev, Ukraine, 03056

Professor, Doctor of technical sciences, deputy head of the department

Department of Theoretical and Industrial Heat Engineering

Николай Никифорович Голияд, National Technical University of Ukraine “Kiev Polytechnic Institute” Pobedy ave, 37, Kiev, Ukraine, 03056

Lecturer

Department Chair of Theoretical and Industrial Heat Engineering

Петр Алексеевич Барабаш, National Technical University of Ukraine “Kiev Polytechnic Institute” Pobedy ave, 37, Kiev, Ukraine, 03056

Associate professor, Candidate of technical science

Department Chair of Theoretical and Industrial Heat Engineering

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Published

2015-12-25

How to Cite

Рачинский, А. Ю., Безродный, М. К., Голияд, Н. Н., & Барабаш, П. А. (2015). Experimental study of heat and mass transfer coefficients at heat recovery of steam-gas flow in the torch of drops of mechanical nozzle. Eastern-European Journal of Enterprise Technologies, 6(8(78), 50–59. https://doi.org/10.15587/1729-4061.2015.55484

Issue

Vol. 6 No. 8(78) (2015): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

License

Copyright (c) 2015 Артур Юрьевич Рачинский, Михаил Константинович Безродный, Николай Никифорович Голияд, Петр Алексеевич Барабаш

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