Numerical study on turbulent heat transfer performance of a new compound parallel flow shell and tube heat exchanger with longitudinal vortex generator. (5th January 2020)

• Record Type: Journal Article
• Authors: Yu, Chulin; Zhang, Haiqing; Zeng, Min; Wang, Ruojin; Gao, Bingjun
• Is Part Of: Applied thermal engineering. Volume 164(2019)
• Publication Date: 2020-01-05
• Subjects: Parallel flow -- Performance -- Shell and tube heat exchanger -- LVG; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2019.114449
• Languages: English
• ISSNs: 1359-4311

Abstract

Highlights: A new compound parallel flow shell and tube heat exchanger is proposed. The thermal-hydraulic performance of five different configurations is compared. The effects of geometric parameter on thermal-hydraulic performance are discussed. Abstract: A new compound parallel flow STHX with CPB and LVG is proposed. Firstly, the turbulent thermal performance and flow structure of STHX with five different configurations of LVG are compared numerically. The effect of serrate, hole and layout on thermal-hydraulic performance is discussed. Secondly, the thermal performance of the selected configuration is further investigated using RSM analysis. The effect of geometric parameters on thermal-hydraulic performance is illustrated. Finally, the obtained results are compared with those of the previous configurations. The results show that the baseline configuration has the best thermal performance; the increase of the LVG height and LVG attack angle can improve the heat transfer performance and overall thermal-hydraulic performance. The LVG pitch has a complicate effect on the thermal performance. The LVG may have a broader application prospect in terms of thermal-hydraulic performance and manufacturing cost compared with the sinusoidal wavy tape and wire coil.