EMPIRICAL INVESTIGATION OF BOILING FLOW PRESSURE DROP INSIDE FLATTENED TUBES

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NASR M.; BEHABADI M.A.; ASHTIYANI M.J.

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Journal Paper

Paper Information

Journal: Journal of Aerospace Mechanics Year:2010 | Volume:6 | Issue:2 (20) Page(s): 53-60

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Title

EMPIRICAL INVESTIGATION OF BOILING FLOW PRESSURE DROP INSIDE FLATTENED TUBES

Author(s)

NASR M. | BEHABADI M.A. | ASHTIYANI M.J. | Issue Writer Certificate

Keywords

PRESSURE DROPQ2

BOILING FLOWQ3

R-134AQ3

FLATTENED TUBEQ2

EMPIRICALQ2

Abstract

In this study PRESSURE DROP of R-134A refrigerator under convective boiling conditions in horizontal FLATTENED TUBEs was investigated. Round copper tubes with outer diameter of 9.52 mm are flattened into oblong shape with different internal height of 6.6 mm, 5.5 mm, 3.8 mm, and 2.8 mm. The experimental set-up used is a well-instrumented vapor compression refrigeration cycle. It includes three evaporators named pre-evaporator, test evaporator, and after evaporator. The results show that PRESSURE DROP increases as the tube profile is flattened. The obtained experimental data are compared with the results of existing correlations for estimation of PRESSURE DROP inside FLATTENED TUBEs. In worst condition, the maximum BOILING FLOW PRESSURE DROP is increased to 600% for the horizontal FLATTENED TUBE relative to the round tube values. Also, a correlation is developed to predict the BOILING FLOW PRESSURE DROP inside FLATTENED TUBEs. This correlation predicts the experimental results within an error band of ±20%.

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APA: Copy

NASR, M., BEHABADI, M.A., & ASHTIYANI, M.J.. (2010). EMPIRICAL INVESTIGATION OF BOILING FLOW PRESSURE DROP INSIDE FLATTENED TUBES. AEROSPACE MECHANICS JOURNAL, 6(2 (20)), 53-60. SID. https://sid.ir/paper/101999/en

Vancouver: Copy

NASR M., BEHABADI M.A., ASHTIYANI M.J.. EMPIRICAL INVESTIGATION OF BOILING FLOW PRESSURE DROP INSIDE FLATTENED TUBES. AEROSPACE MECHANICS JOURNAL[Internet]. 2010;6(2 (20)):53-60. Available from: https://sid.ir/paper/101999/en

IEEE: Copy

M. NASR, M.A. BEHABADI, and M.J. ASHTIYANI, “EMPIRICAL INVESTIGATION OF BOILING FLOW PRESSURE DROP INSIDE FLATTENED TUBES,” AEROSPACE MECHANICS JOURNAL, vol. 6, no. 2 (20), pp. 53–60, 2010, [Online]. Available: https://sid.ir/paper/101999/en

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