Experimental study of surface effect on flow boiling heat transfer in horizontal smooth tubes

J. Yu; S. Momoki; S. Koyama

doi:10.1016/S0017-9310(98)00279-8

Experimental study of surface effect on flow boiling heat transfer in horizontal smooth tubes

J. Yu, S. Momoki, S. Koyama

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

In the present study the experiments on flow boiling heat transfer in two horizontal smooth copper tubes are carried out with pure refrigerants HFC134a, HCFC123, HCFC22, CFC114 and CFC12 using water-heated double-tube type test sections. One test tube is of 8.4 mm inside diameter, and the other is of 7.9 mm inside diameter. For both tubes the surface roughness is measured and the surface micro-geometry is observed with SEM. From the experimental results, the surface effect on flow boiling heat transfer is clarified and a correlation for the heat transfer coefficient is proposed in consideration of the surface effect. This correlation equation agrees well with the experimental data from different sources.

Original language	English
Pages (from-to)	1909-1918
Number of pages	10
Journal	International Journal of Heat and Mass Transfer
Volume	42
Issue number	10
DOIs	https://doi.org/10.1016/S0017-9310(98)00279-8
Publication status	Published - May 1 1999

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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N2 - In the present study the experiments on flow boiling heat transfer in two horizontal smooth copper tubes are carried out with pure refrigerants HFC134a, HCFC123, HCFC22, CFC114 and CFC12 using water-heated double-tube type test sections. One test tube is of 8.4 mm inside diameter, and the other is of 7.9 mm inside diameter. For both tubes the surface roughness is measured and the surface micro-geometry is observed with SEM. From the experimental results, the surface effect on flow boiling heat transfer is clarified and a correlation for the heat transfer coefficient is proposed in consideration of the surface effect. This correlation equation agrees well with the experimental data from different sources.

AB - In the present study the experiments on flow boiling heat transfer in two horizontal smooth copper tubes are carried out with pure refrigerants HFC134a, HCFC123, HCFC22, CFC114 and CFC12 using water-heated double-tube type test sections. One test tube is of 8.4 mm inside diameter, and the other is of 7.9 mm inside diameter. For both tubes the surface roughness is measured and the surface micro-geometry is observed with SEM. From the experimental results, the surface effect on flow boiling heat transfer is clarified and a correlation for the heat transfer coefficient is proposed in consideration of the surface effect. This correlation equation agrees well with the experimental data from different sources.

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Experimental study of surface effect on flow boiling heat transfer in horizontal smooth tubes

Abstract

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