Mass flow rate of R-410A through short tubes working near the critical point

Yong Chan Kim, Vance Payne, Jongmin Choi, Piotr Domanski

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Experimental data were taken to examine R-410A mass flow rate characteristics through short tube restrictors at upstream pressures approaching the critical point. Four short tube restrictors were tested by varying upstream pressure from 2619 to 4551 kPa (corresponding to saturation temperature from 43.9 to 71.7 °C), upstream subcooling from 2.8 to 11.1 °C and downstream pressure from 772 to 1274 kPa. The experimental data were represented as a function of major operating parameters and short tube diameter. As compared to mass flow trends at typical upstream pressures, flow dependency on upstream subcooling was more significant at high upstream pressures due to a higher density change. Based on the database obtained from this study and literature, an empirical correlation was developed from a power law form of dimensionless parameters generated by the Buckingham Pi theorem. The post-predictions of the new correlation yielded average and mean deviations of 0.11 and 2.4%, respectively.

Original languageEnglish
Pages (from-to)547-553
Number of pages7
JournalInternational Journal of Refrigeration
Volume28
Issue number4
DOIs
Publication statusPublished - 2005 Jun 1

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mass flow
Flow rate
Pressure
Databases
Temperature
prediction
temperature

Keywords

  • Correlation
  • Critical point
  • Experiment
  • Flow
  • Geometry
  • Parameter
  • Pressure
  • R-410A
  • Tube

ASJC Scopus subject areas

  • Food Science
  • Mechanical Engineering

Cite this

Mass flow rate of R-410A through short tubes working near the critical point. / Kim, Yong Chan; Payne, Vance; Choi, Jongmin; Domanski, Piotr.

In: International Journal of Refrigeration, Vol. 28, No. 4, 01.06.2005, p. 547-553.

Research output: Contribution to journalArticle

Kim, Yong Chan ; Payne, Vance ; Choi, Jongmin ; Domanski, Piotr. / Mass flow rate of R-410A through short tubes working near the critical point. In: International Journal of Refrigeration. 2005 ; Vol. 28, No. 4. pp. 547-553.
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