Condensation heat transfer of low gwp refrigerants R1234ze(E), R1234ze(Z) and R1233zd(E) on a horizontal plain tube

Ryuichi Nagata; Chieko Kondou; Shigeru Koyama

doi:10.18462/iir.icr.2015.0165

Condensation heat transfer of low gwp refrigerants R1234ze(E), R1234ze(Z) and R1233zd(E) on a horizontal plain tube

Ryuichi Nagata, Chieko Kondou, Shigeru Koyama

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this study, the experimental data on heat transfer coefficient of free convective condensation on a horizontal plain tube are presented for R1234ze(E), R1234ze(Z), R1233zd(E), R134a and R245fa. Condensation experiment is conducted with a copper plain tube of 19.12 mm in outer diameter and 400 mm in the heat transfer length. The experiment covers saturation temperatures from 20 to 60 °C and the degrees of wall subcooling from 0.77 to 28.81 K. The measured Nu of R1234ze(E) and R1234ze(Z) are agree with theoretical Nu equation within a bias of 6%. However, the experimental Nu of R1233zd(E) is biased +25%, on average, to the theoretical Nu. For more accurate HTC prediction, the sufficient transport property data would be needed for R1233zd(E).

Original language	English
Title of host publication	24th IIR International Congress of Refrigeration, ICR 2015
Publisher	International Institute of Refrigeration
Pages	958-965
Number of pages	8
ISBN (Electronic)	9782362150128
DOIs	https://doi.org/10.18462/iir.icr.2015.0165
Publication status	Published - 2015
Event	24th IIR International Congress of Refrigeration, ICR 2015 - Yokohama, Japan Duration: Aug 16 2015 → Aug 22 2015

Publication series

Name	Refrigeration Science and Technology
ISSN (Print)	0151-1637

Other

Other	24th IIR International Congress of Refrigeration, ICR 2015
Country/Territory	Japan
City	Yokohama
Period	8/16/15 → 8/22/15

All Science Journal Classification (ASJC) codes

Control and Systems Engineering
Electrical and Electronic Engineering
Mechanical Engineering
Condensed Matter Physics

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10.18462/iir.icr.2015.0165

Cite this

Condensation heat transfer of low gwp refrigerants R1234ze(E), R1234ze(Z) and R1233zd(E) on a horizontal plain tube. / Nagata, Ryuichi; Kondou, Chieko; Koyama, Shigeru.
24th IIR International Congress of Refrigeration, ICR 2015. International Institute of Refrigeration, 2015. p. 958-965 (Refrigeration Science and Technology).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Nagata, R, Kondou, C & Koyama, S 2015, Condensation heat transfer of low gwp refrigerants R1234ze(E), R1234ze(Z) and R1233zd(E) on a horizontal plain tube. in 24th IIR International Congress of Refrigeration, ICR 2015. Refrigeration Science and Technology, International Institute of Refrigeration, pp. 958-965, 24th IIR International Congress of Refrigeration, ICR 2015, Yokohama, Japan, 8/16/15. https://doi.org/10.18462/iir.icr.2015.0165

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title = "Condensation heat transfer of low gwp refrigerants R1234ze(E), R1234ze(Z) and R1233zd(E) on a horizontal plain tube",

abstract = "In this study, the experimental data on heat transfer coefficient of free convective condensation on a horizontal plain tube are presented for R1234ze(E), R1234ze(Z), R1233zd(E), R134a and R245fa. Condensation experiment is conducted with a copper plain tube of 19.12 mm in outer diameter and 400 mm in the heat transfer length. The experiment covers saturation temperatures from 20 to 60 °C and the degrees of wall subcooling from 0.77 to 28.81 K. The measured Nu of R1234ze(E) and R1234ze(Z) are agree with theoretical Nu equation within a bias of 6%. However, the experimental Nu of R1233zd(E) is biased +25%, on average, to the theoretical Nu. For more accurate HTC prediction, the sufficient transport property data would be needed for R1233zd(E).",

author = "Ryuichi Nagata and Chieko Kondou and Shigeru Koyama",

year = "2015",

doi = "10.18462/iir.icr.2015.0165",

language = "English",

series = "Refrigeration Science and Technology",

publisher = "International Institute of Refrigeration",

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PY - 2015

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N2 - In this study, the experimental data on heat transfer coefficient of free convective condensation on a horizontal plain tube are presented for R1234ze(E), R1234ze(Z), R1233zd(E), R134a and R245fa. Condensation experiment is conducted with a copper plain tube of 19.12 mm in outer diameter and 400 mm in the heat transfer length. The experiment covers saturation temperatures from 20 to 60 °C and the degrees of wall subcooling from 0.77 to 28.81 K. The measured Nu of R1234ze(E) and R1234ze(Z) are agree with theoretical Nu equation within a bias of 6%. However, the experimental Nu of R1233zd(E) is biased +25%, on average, to the theoretical Nu. For more accurate HTC prediction, the sufficient transport property data would be needed for R1233zd(E).

AB - In this study, the experimental data on heat transfer coefficient of free convective condensation on a horizontal plain tube are presented for R1234ze(E), R1234ze(Z), R1233zd(E), R134a and R245fa. Condensation experiment is conducted with a copper plain tube of 19.12 mm in outer diameter and 400 mm in the heat transfer length. The experiment covers saturation temperatures from 20 to 60 °C and the degrees of wall subcooling from 0.77 to 28.81 K. The measured Nu of R1234ze(E) and R1234ze(Z) are agree with theoretical Nu equation within a bias of 6%. However, the experimental Nu of R1233zd(E) is biased +25%, on average, to the theoretical Nu. For more accurate HTC prediction, the sufficient transport property data would be needed for R1233zd(E).

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ER -

Condensation heat transfer of low gwp refrigerants R1234ze(E), R1234ze(Z) and R1233zd(E) on a horizontal plain tube

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