Publication detail

Experimental Investigation of Critical Heat Flux on Different Surfaces at Low Pressure and Low Flow

SUK, L. PETROSYAN, T. ŠTEVANKA, K. VLČEK, D. GEJDOŠ, P.

Original Title

Experimental Investigation of Critical Heat Flux on Different Surfaces at Low Pressure and Low Flow

Type

journal article in Web of Science

Language

English

Original Abstract

Steady state flow boiling experiments were carried out on several heated tubes with outer diameter 9.14 mm at outlet pressures 120, 200 and 300 kPa, inlet temperatures 64, 78 and 91 °C and approximately 400, 500, 600 and 800 kg/(m2·s) mass flux entering the vertically aligned test annulus until critical heat flux (CHF) was reached. The tubes were made of Inconel 625 with a length of 400 mm. The Inconel tubes were tested in three different modifications as smooth, abraded with 150 grit sandpaper and bead blasted. Multiple experiments were repeated on the same specimen to investigate the effect of surface characteristic changes (i.e., wettability, roughness and oxide layer morphology) on the occurrence of CHF. Despite the changes in initial wettability, the CHF dependency was not clearly observed, however, the changes in roughness led to an increase in CHF. The total number of 115 experimental runs were collected and the results were also compared with other literature experimental data.

Keywords

critical heat flux; flow boiling; annulus; Inconel 625; two phase flow; low pressure

Authors

SUK, L.; PETROSYAN, T.; ŠTEVANKA, K.; VLČEK, D.; GEJDOŠ, P.

Released

6. 10. 2020

Publisher

MDPI

Location

Basel, Switzerland

ISBN

1996-1073

Periodical

ENERGIES

Year of study

13

Number

19

State

Swiss Confederation

Pages from

1

Pages to

23

Pages count

23

URL

https://www.mdpi.com/1996-1073/13/19/5205

Full text in the Digital Library

http://hdl.handle.net/11012/195684

BibTex

@article{BUT165589,
  author="Ladislav {Suk} and Taron {Petrosyan} and Kamil {Števanka} and Daniel {Vlček} and Pavel {Gejdoš}",
  title="Experimental Investigation of Critical Heat Flux on Different Surfaces at Low Pressure and Low Flow",
  journal="ENERGIES",
  year="2020",
  volume="13",
  number="19",
  pages="1--23",
  doi="10.3390/en13195205",
  issn="1996-1073",
  url="https://www.mdpi.com/1996-1073/13/19/5205"
}