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Experimental investigation of pressure drop during flow boiling ofR-134a inside smooth flattened tubes

Publish place: 12th Conference of Fluid Dynamics
Publish Year: 1388
Type: Conference paper
Language: English
View: 1,903

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Link to this Paper:
https://civilica.com/doc/72635

Document National Code:

CFD12_100

Index date: 8 June 2009

Experimental investigation of pressure drop during flow boiling ofR-134a inside smooth flattened tubes abstract

In this study, the pressure drop of R-134a under convective boiling conditions in horizontal plane flattened tubes was investigated. Plane copper tubes with internal diameter of 8.7 mm and thickness of .4 mm were successfully flattened into oblong shape with different internal height of 6.6 mm, 5.5 mm, 3.8 mm and 2.8mm. The experiments were carried out for mass velocities from 74 kgm-2s-1 to 106 kgm-2s-1 and vapor qualities from approximately 25% to 95%. The results showed that the pressure drop increases for a given mass velocity and vapor quality, as the tube profile is flattened. Also, the pressure drop increases by increase of mass velocity and vapor quality for all the tube profiles as expected.

Experimental investigation of pressure drop during flow boiling ofR-134a inside smooth flattened tubes Keywords:

Experimental , Pressure Drop , Boiling , Flattened Tube , R-134a

Experimental investigation of pressure drop during flow boiling ofR-134a inside smooth flattened tubes authors

M Nasr

M.Sc. Student Department of Mechanical Engineering, University College of Engineering, University of Tehran, Iran

M.A Akhavan-Behabadi

Associate Professor Department of Mechanical Engineering, University College of Engineering, University of Tehran, Iran

S.E Marashi

M.Sc. Student Department of Mechanical Engineering, University College of Engineering, University of Tehran, Iran

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- Leonard D. Tijing, Bock Choon Pak, Byung Joon Baek ...
- M.J. Wilson, T.A. Newell, J.C. Chato, and C.A. Infante ...
- D.S Jung, and R. Radermacher, "Prediction of pressure drop ...
-A.L. Souza, J.C. Chato, J.P. Wattelet and B.R. C hristoffersen, ...
- Wolverine Tube, Inc., Engineering Data Book III, Chapter 13, ...
- R.Gronnerud, "Investigation of Liquid Hold-Up, Fl OW -Resistance and ...
-R.Sonntag , C.Borgnakke and G.Van wylen, _ "Fundamental S of ...
- J. Collier and J. Thome, "Convective Boiling and Condensation ...
-D. Steiner, _ VDI -Warmeatlas (VDI Heat Atlas), Verein Deutscher ...
-M.B Ould Didi. N.Kattan, J.R Thome, "Prediction of Two-Phase Pressure ...
-Muller- H.Steinhagen, K.Heck, "A Simple Friction Pressure Drop Correlation for ...
- L.Friedel, "Improved Friction Pressure Drop Correlations for Horizontal and ...
_ 1000 2000 3000 4000 Observed pressure drop sra dient(pa/m) ...
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