Numerical and experimental investigation of shellside characteristics for RODbaffle heat exchanger

“…For a rod baffle heat exchanger with a large shell diameter, the particularity of fluid flow and heat transfer in the region near the shell wall is neglected, the fluid flow region surrounded by four tubes is separated to be a unit duct, and only one flow period is needed for simulation [17,18]. The model is shown in Fig.…”

Section: Periodic Unit Duct Model Of Rod Baffle Heat Exchangermentioning

confidence: 99%

Numerical research on heat transfer and flow resistance performance of specially‐shaped rod baffle heat exchangers

Dong

Min-shan

et al. 2011

Heat Trans. Asian Res.

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In order to overcome the disadvantages of heat transfer performance in the shell side of the common circular cross section rod baffle heat exchanger with a low Reynolds number, a numerical simulation on fluid flow and heat transfer in the shell side with different types of rod baffles is carried out. The rod baffles include the circular cross section, trigonal cross section, and rhombic cross section. The influence of heat transfer enhancement and flow resistance reduction affected by baffles is summarized. It is indicated that the trigonal and rhombic cross section rod baffles present the better performance of heat transfer enhancement and flow resistance reduction. With the rhombic cross section rod baffles in the shell side, the higher heat transfer coefficient and overall property in the shell side are achieved when Re is lower, and the heat transfer coefficient in the shell side is 10% higher than that of a circular cross section rod baffle at the same Reynolds number. The trigonal and rhombic cross section rod baffles in the shell side give more optional structure forms for expanding the application scope of rod baffle heat exchangers.

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“…As a contrast, rod baffles induce shellside fluids flowing longitudinally, thus the flow resistances on the shell sides of rod baffle heat exchangers are considerably lower than the counterparts of STHXs with segmental baffles. Meanwhile, good heat transfer performances are obtained due to the venturi effects and eddy streets generated by fluids flowing across rods [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and performance improvement for a small size shell-and-tube heat exchanger with trefoil-hole baffles

You

Chen

Xie

et al. 2015

Applied Thermal Engineering

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Numerical and experimental investigation of shellside characteristics for RODbaffle heat exchanger

Cited by 66 publications

References 11 publications

An experimental study on the heat transfer performance of a prototype molten-salt rod baffle heat exchanger for concentrated solar power

An experimental study on the heat transfer performance of a prototype molten-salt rod baffle heat exchanger for concentrated solar power

Numerical research on heat transfer and flow resistance performance of specially‐shaped rod baffle heat exchangers

Numerical simulation and performance improvement for a small size shell-and-tube heat exchanger with trefoil-hole baffles

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