Convective evaporation on plain tube and low-fin tube banks using R-123 and R-134a

Liang Han Chien; J. S. Wu

Convective evaporation on plain tube and low-fin tube banks using R-123 and R-134a

Liang Han Chien^*
, J. S. Wu

^*Corresponding author for this work

Research output: Contribution to conference › Conference Paper › peer-review

Abstract

This experimental study investigates the convective evaporation heat transfer in a tube bundle. Heat transfer experiments were performed using R-134a and R-123 on a plain tube and a fin tube having 15.9 mm (0.626 in.) O.D. over a range of vapor qualities (0.03-0.34) with low mass velocities (8 to 40kg/m ²s, or 1.6 to 8.2 lbm/ft²) for a wide range of heat flux. Pool boiling data were also tested in the same apparatus. The fin tube having fins 0.6 mm (0.024 in.) high, with 0.6mm (0.024 in.) fin pitch and 0.3 mm (0.012 in.) fin thickness, results in up to 170% boiling performance enhancement over the plain tube. The present experimental data were compared with correlations using superposition and asymptotic models. The super-position-type correlation provided better prediction than the asymptotic model.

Original language	English
Pages	103-110
Number of pages	8
State	Published - 2004
Externally published	Yes
Event	2004 Winter Meeting - Technical and Symposium Papers, American Society of Heating, Refrigerating and Air-Conditioning Engineers - Anaheim, CA, United States Duration: 24 01 2004 → 28 01 2004

Conference

Conference	2004 Winter Meeting - Technical and Symposium Papers, American Society of Heating, Refrigerating and Air-Conditioning Engineers
Country/Territory	United States
City	Anaheim, CA
Period	24/01/04 → 28/01/04

Cite this

@conference{f71190e0b8574f209171a919d6005a31,

title = "Convective evaporation on plain tube and low-fin tube banks using R-123 and R-134a",

abstract = "This experimental study investigates the convective evaporation heat transfer in a tube bundle. Heat transfer experiments were performed using R-134a and R-123 on a plain tube and a fin tube having 15.9 mm (0.626 in.) O.D. over a range of vapor qualities (0.03-0.34) with low mass velocities (8 to 40kg/m 2s, or 1.6 to 8.2 lbm/ft2) for a wide range of heat flux. Pool boiling data were also tested in the same apparatus. The fin tube having fins 0.6 mm (0.024 in.) high, with 0.6mm (0.024 in.) fin pitch and 0.3 mm (0.012 in.) fin thickness, results in up to 170\% boiling performance enhancement over the plain tube. The present experimental data were compared with correlations using superposition and asymptotic models. The super-position-type correlation provided better prediction than the asymptotic model.",

author = "Chien, \{Liang Han\} and Wu, \{J. S.\}",

year = "2004",

language = "英语",

pages = "103--110",

note = "2004 Winter Meeting - Technical and Symposium Papers, American Society of Heating, Refrigerating and Air-Conditioning Engineers ; Conference date: 24-01-2004 Through 28-01-2004",

}

Convective evaporation on plain tube and low-fin tube banks using R-123 and R-134a. / Chien, Liang Han; Wu, J. S.
2004. 103-110 Paper presented at 2004 Winter Meeting - Technical and Symposium Papers, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Anaheim, CA, United States.

Research output: Contribution to conference › Conference Paper › peer-review

TY - CONF

T1 - Convective evaporation on plain tube and low-fin tube banks using R-123 and R-134a

AU - Chien, Liang Han

AU - Wu, J. S.

PY - 2004

Y1 - 2004

N2 - This experimental study investigates the convective evaporation heat transfer in a tube bundle. Heat transfer experiments were performed using R-134a and R-123 on a plain tube and a fin tube having 15.9 mm (0.626 in.) O.D. over a range of vapor qualities (0.03-0.34) with low mass velocities (8 to 40kg/m 2s, or 1.6 to 8.2 lbm/ft2) for a wide range of heat flux. Pool boiling data were also tested in the same apparatus. The fin tube having fins 0.6 mm (0.024 in.) high, with 0.6mm (0.024 in.) fin pitch and 0.3 mm (0.012 in.) fin thickness, results in up to 170% boiling performance enhancement over the plain tube. The present experimental data were compared with correlations using superposition and asymptotic models. The super-position-type correlation provided better prediction than the asymptotic model.

AB - This experimental study investigates the convective evaporation heat transfer in a tube bundle. Heat transfer experiments were performed using R-134a and R-123 on a plain tube and a fin tube having 15.9 mm (0.626 in.) O.D. over a range of vapor qualities (0.03-0.34) with low mass velocities (8 to 40kg/m 2s, or 1.6 to 8.2 lbm/ft2) for a wide range of heat flux. Pool boiling data were also tested in the same apparatus. The fin tube having fins 0.6 mm (0.024 in.) high, with 0.6mm (0.024 in.) fin pitch and 0.3 mm (0.012 in.) fin thickness, results in up to 170% boiling performance enhancement over the plain tube. The present experimental data were compared with correlations using superposition and asymptotic models. The super-position-type correlation provided better prediction than the asymptotic model.

UR - https://www.scopus.com/pages/publications/8344258047

M3 - 论文

AN - SCOPUS:8344258047

SP - 103

EP - 110

T2 - 2004 Winter Meeting - Technical and Symposium Papers, American Society of Heating, Refrigerating and Air-Conditioning Engineers

Y2 - 24 January 2004 through 28 January 2004

ER -

Convective evaporation on plain tube and low-fin tube banks using R-123 and R-134a

Abstract

Conference

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