Modeling and simulation of a supercritical CO2-liquid sodium compact heat exchanger for sodium-cooled fast reactors

Wang, Hailei; Kissick, Sean

doi:10.1016/j.applthermaleng.2020.115859

Cited by 23 publications

(3 citation statements)

References 52 publications

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“…Although the designs of SFR differ, they generally have various heat exchangers that can be categorized by the coolants such as sodium-to-sodium, sodium-to-water, and sodium-to-air types [3]. The sodium-to-air heat exchanger is directly related to the safety of the overall plant [4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Performance Tests of a Circular-Fin Sodium-to-Air Heat Exchanger for Sodium-Cooled Fast Reactors

Lee,

Kim,

Eoh

et al. 2024

International Journal of Energy Research

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Shell and tube-type crossflow heat exchangers with circular fins are widely used in various industries, including nuclear power plants. This study focuses on the sodium-to-air heat exchanger, which is one of the key safety features in sodium-cooled fast reactors. Tube alignment inside the heat exchanger is important because it directly determines the performance. Although heat exchangers are generally designed to have staggered tube alignment, inevitable inline-aligned zones exist. Therefore, this paper proposes a hybrid tube alignment modeling approach that considers both staggered and inline tube heat transfer phenomena. The results of the hybrid model calculations are verified and validated with liquid sodium experiments. The hybrid approach to the tube arrangement reduced the temperature deviation between experimental and calculated values to a difference of 4.55% and 7.38% for both sodium and air sides, respectively, while for the heat transfer, the difference was 15.12% and 9.06% for sodium and air sides, respectively. The results of this study can also be used as a basis for the safety evaluation of nuclear reactors and licensing processes for sodium-cooled fast reactors. In addition, this study is limited not only to sodium heat exchangers but also to any serpentine tube arrangement or crossflow heat exchanger under high-temperature systems, such as concentrated solar power and thermal energy storage industries.

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Section: Introductionmentioning

confidence: 99%

Heat Transfer Performance Tests of a Circular-Fin Sodium-to-Air Heat Exchanger for Sodium-Cooled Fast Reactors

Lee,

Kim,

Eoh

et al. 2024

International Journal of Energy Research

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“…Different channels have been investigated, including straight channels [5][6][7], zigzag channels [8][9][10], sinusoidal channels [11][12][13][14], S-shaped channels [15,16], helical twine PCHE [17], and channels with airfoil fins [18][19][20][21][22]. Zhao et al [23] proposed the Fanning friction factor in the straight channel PCHE by numerical calculation.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on thermal-hydraulic performance of cryogenic LNG in sinusoidal channel with airfoil fins under marine dynamic load

Tian,

Chen,

Zhao

et al. 2024

Preprint

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For floating liquefied natural gas (FLNG), printed circuit heat exchanger (PCHE) is an optimal choice owing to its compactness and large temperature difference heat transfer in a short time. In this study, a novel sinusoidal channel configuration was established which is with airfoil fins, and its thermal-hydraulic performance was numerically studied. The Nusselt number and Fanning friction factor were studied. Meanwhile, the effects of marine dynamic load and inlet mass flow rate (IMFR) on the novel configuration were studied by numerical simulation. Considering the application scenarios of the PCHE, the supercritical LNG (S-LNG) with 113.15 K and 32 MPa was the cold fluid, and the ethylene glycol with 293.15 K and 0.1 MPa was the hot fluid. The results show that the novel configuration has better comprehensive performance. The local turbulent kinetic energy of the novel configuration is improved by about 19.78%. The temperature and velocity uniformity are improved. Marine dynamic load deteriorates the comprehensive performance of the novel configuration. With the increasing of the IMFR, the outlet temperature for S-LNG gradually decreases from 240.65 K to 186.70 K, while the pressure drop and turbulent kinetic energy increase from 6969.72 Pa to 23225.75 Pa and 0.0256 m2/s2 to 0.12874 m2/s2, respectively. This work can provide valuable guidance for PCHE under cryogenic and supercritical pressure working condition in engineering applications.

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“…Cai et al [7] optimized microtube heat exchangers for supercritical CO 2 cooling. Wang and Kissick [8] designed a compact heat exchanger for heat transfer between supercritical CO 2 and liquid sodium. A printed circuit heat exchanger (PCHE) was also suggested for the heat transfer of supercritical carbon dioxide.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of Plate-Fin Heat Exchanger in a Gas Turbine and Supercritical Carbon Dioxide Combined Cycle with Thermal Oil Loop

et al. 2021

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This paper presents an investigation on the optimum design for a plate-fin heat exchanger (PFHE) of a gas and supercritical carbon dioxide combined cycle which uses thermal oil as intermediate heat-transfer fluid. This may promote the heat transfer from low heat-flux exhaust to a high heat-flux supercritical carbon dioxide stream. The number of fin layers, plate width and geometrical parameters of fins on both sides of PFHE are selected as variables to be optimized by a non-dominated sorting genetic algorithm-II (NSGA-II), which is a multi-objective genetic algorithm. For the confliction of heat transfer area and pressure drop on the exhaust side, which are the objective indexes, the result of NSGA-II is a Pareto frontier. The technique for order of preference by similarity to ideal solution (TOPSIS) approach is applied to choose the optimum solution from the Pareto frontier. Finally, further simulation is performed to analyze the effect of each parameter to objective indexes and confirm the rationality of optimization results.

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Modeling and simulation of a supercritical CO2-liquid sodium compact heat exchanger for sodium-cooled fast reactors

Cited by 23 publications

References 52 publications

Heat Transfer Performance Tests of a Circular-Fin Sodium-to-Air Heat Exchanger for Sodium-Cooled Fast Reactors

Heat Transfer Performance Tests of a Circular-Fin Sodium-to-Air Heat Exchanger for Sodium-Cooled Fast Reactors

Numerical investigation on thermal-hydraulic performance of cryogenic LNG in sinusoidal channel with airfoil fins under marine dynamic load

Design Optimization of Plate-Fin Heat Exchanger in a Gas Turbine and Supercritical Carbon Dioxide Combined Cycle with Thermal Oil Loop

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