Condensation of Refrigerant Mixtures R22+R114 Inside a Horizontal Tube

Shigeru Koyama; Akio Mlyara; Tetsu Fujii; Hiroshi Takamatsu; Kazuo Yonemoto

doi:10.1299/kikaib.54.1447

Condensation of Refrigerant Mixtures R22+R114 Inside a Horizontal Tube

Shigeru Koyama, Akio Mlyara, Tetsu Fujii, Hiroshi Takamatsu, Kazuo Yonemoto

Thermal Engineering

Research output: Contribution to journal › Article

4 Citations (Scopus)

Abstract

Experimental study of the condensation of pure and mixed refrigerants of R22 and R114 inside a spirally grooved horizontal tube is carried out for a tube-in-tube counter flow type condenser in the ranges of 3~21 bar of pressure and 26~70 kg/h of mass flow rate. Axial distributions of refrigerant, tube wall and cooling water temperatures, wall heat flux and vapour quality are graphically shown and circumferential distribution of tube wall temperature is also shown. The characteristic of the local Nusselt number depends on the molar fraction, while the average Nusselt number can be correlated well by an equation, which is modified from a previously established equation for pure refrigerants inside a smooth tube.

Original language	English
Pages (from-to)	1447-1452
Number of pages	6
Journal	Transactions of the Japan Society of Mechanical Engineers Series B
Volume	54
Issue number	502
DOIs	https://doi.org/10.1299/kikaib.54.1447
Publication status	Published - Jan 1 1988

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All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanical Engineering

Cite this

Koyama, S., Mlyara, A., Fujii, T., Takamatsu, H., & Yonemoto, K. (1988). Condensation of Refrigerant Mixtures R22+R114 Inside a Horizontal Tube. Transactions of the Japan Society of Mechanical Engineers Series B, 54(502), 1447-1452. https://doi.org/10.1299/kikaib.54.1447

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10.1299/kikaib.54.1447