In the present study the experiments on flow boiling heat transfer in two horizontal smooth tubes are carried out with pure refrigerants HFCl34a, HCFC123, HCFC22, CFC114 and CFC12 using a water-heated double-tube type test section. The test section is 6.0m long, and both copper tubes are of about 8.4 mm inside diameter. The surface roughness is measured and the surface macro-geometry is observed with SEM for both tubes. From the experimental results, the surface effect on flow boiling heat transfer a clarified. A proposed correlation for flow boiling heat transfer coefficient, in which the surface effect is considered, agrees well with the experimental data from different sources.
|Number of pages||6|
|Publication status||Published - 1996|
|Event||Proceedings of the 1996 4th International Symposium on Heat Transfer, ISHT - Beijing, China|
Duration: Oct 7 1996 → Oct 11 1996
|Other||Proceedings of the 1996 4th International Symposium on Heat Transfer, ISHT|
|Period||10/7/96 → 10/11/96|
All Science Journal Classification (ASJC) codes