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Heat Transfer Research
Импакт фактор: 0.404 5-летний Импакт фактор: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561

Выпуски:
Том 50, 2019 Том 49, 2018 Том 48, 2017 Том 47, 2016 Том 46, 2015 Том 45, 2014 Том 44, 2013 Том 43, 2012 Том 42, 2011 Том 41, 2010 Том 40, 2009 Том 39, 2008 Том 38, 2007 Том 37, 2006 Том 36, 2005 Том 35, 2004 Том 34, 2003 Том 33, 2002 Том 32, 2001 Том 31, 2000 Том 30, 1999 Том 29, 1998 Том 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2016008224
pages 575-595

NUMERICAL INVESTIGATION OF COMBINED PARALLEL TWO SHELL-PASS SHELL-AND-TUBE HEAT EXCHANGERS WITH CONTINUOUS HELICAL BAFFLES

Jian-Feng Yang
Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
Qiu-Wang Wang
Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R. China
Min Zeng
Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China

Краткое описание

A combined parallel two shell-pass shell-and-tube heat exchanger with continuous helical baffles (CPTP-STHX) and an improved model (CPTP-STHX-improved) have been proposed to improve the heat transfer performance of shell-and-tube heat exchangers (STHXs). It is found that proportion of the mass flow rate of the inner shell pass to the total mass flow rate of the shell side is a constant. The heat transfer performance increases with the resistance of the inner shell pass. The CPTP-STHX-improved is compared with a conventional STHX with segmental baffles (SG-STHXs) by means of the computational fluid dynamic (CFD) method. The numerical results show that for the same mass flow rate m in the shell side, the heat transfer coefficient h, the overall pressure drop Δp, and the heat transfer coefficient per pressure drop h/Δp of the CPTP-STHX-improved are 41.1%, 34.5%, and 4.9% higher than those of the SG-STHX, respectively. For the same overall pressure drop in the shell side, the heat transfer coefficient of the CPTP-STHX-improved has 23.1% increases than that of the SG-STHX. Based on these results, it can be concluded that the CPTP-STHX-improved might be used to replace the conventional STHX with segmental baffles in industrial applications.


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