期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：1
页码：414
DOI：10.15680/IJIRSET.2016.0501062
出版社：S&S Publications
摘要：Overall Heat transfer coefficients were estimated for two-phase flo w in shell and tubes heat exchanger for different flow patterns. A two -phase heat transfer experimental setup was built for this study and a total o f 44 two- phase heat transfer data with different flo w patterns were obtained. For these data, the superficial Reynolds number ranged approximately between (650-4,000) and (27,000-170,000) for the liquid (Re SL ) in first and second heat exchangers respectively and ranged approximately between (2,600 -11,000) and (87,000-162,000) for the gas (Re SG ) in the first and second heat exchanger respectively. Results indicate to the overall heat transfer coefficient (U) and pressure drop ) increases with Re SG increases for a fixed Re SL . Overall heat transfer coefficient (U) increase for low Re SL with increase Re SG in which ranged between (2-8%) and (3-21%) for first and second heat exchanger respectively, but for high Re SL the overall heat transfer coefficien t is increased gradually when increase Re SG for both heat exchangers in the range between 0.5-1% and from 10 to 14% for first and second heat exchangers respectively. Thus the performance of shell and tubes heat exchanger is more efficient and improved for two-phase flow in tubes than one phase, that leading to more efficient industrial applications.
关键词：Two-phase; Shell and tubes; Overall heat transfer coefficient; Pressure drop
