Experimental investigation of a LBE-helium heat exchanger based the ADS

Wang, Yongwei; Li, Xunfeng; Huai, Xiulan; Xi, Wenxuan

doi:10.1016/j.pnucene.2017.04.013

Cited by 16 publications

(5 citation statements)

References 19 publications

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“…The Re ranges of SCO 2 and Pb-Bi accordingly are 38 900 < Re < 9600 and 17 400 < Re < 15 200. The overall heat transfer coefficient is a general parameter of heat exchanger that depends on geometrical and thermal hydraulic conditions including heat transfer area and inlet and outlet conditions of temperature and flow rate [23]. The overall heat transfer coefficient can be defined by convective heat transfer coefficients of the cold and hot fluids, as well as thermal conductivity.…”

Section: Resultsmentioning

confidence: 99%

Numerical Analysis of Conjugate Heat Transfer of Supercritical CO₂ and Pb‐Bi in Tube‐in‐Tube Channels

et al. 2022

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This work presents a numerical analysis of conjugate heat transfer in an annular channel with turbulence models for supercritical CO2 (tube side) and Pb‐Bi (annular side) as working fluids to understand the impact of flow constraints and heat transfer. By using the Navier‐Stokes formulation and the energy equation clarifying concurrent flow buildup and conjugate heat transmittance in tubes, several turbulent Prandtl models were solved numerically. The turbulent Prandtl number Prt of Pb‐Bi was used to refine the consistency of the arithmetical simulation. By comparing Prt, temperature fluctuation, and heat flux density, it was concluded that the existing Prt model should be used with caution in the numerical calculation of liquid metals having low Pr. The heat transfer and flow phenomena at different Prt values are significantly different.

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Section: Resultsmentioning

confidence: 99%

Numerical Analysis of Conjugate Heat Transfer of Supercritical CO₂ and Pb‐Bi in Tube‐in‐Tube Channels

et al. 2022

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“…The point kinetics equations with six groups delayed neutron for ADS subcritical core with an external neutron source is applied to perform the neutronics module calculation [21], the equations are given by:…”

Section: ) Core Model A: Neutronic Kinetics Modelmentioning

confidence: 99%

Development of a Simulation and Control Platform for the China ADS Based on a Thermal Coupling Method

Zhang,

Shi,

et al. 2023

IEEE Access

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Accelerator driven subcritical reactors have attracted much attention in recent years for their ability to generate energy and transform radioactive waste in a cleaner and safer manner. As an important part of accelerator driven subcritical system (ADS), control system is directly related to the stable and safe operation of the system. Therefore, it is necessary to build a high-precision control system simulation platform that is easy to design and verify. In this paper, a simulation platform coupling Simulink and Locust is developed for the control system design of ADS in China. Based on an explicit thermal coupling strategy (TCS) of interface heat flux and wall temperature, the entire closed-loop system model is established. The simulation platform is divided into two parts according to the coolant type: the first part with lead bismuth eutectic is composed of the shell side of the interface heat exchanger (IHX), reactor, and main pump; the second part with water include the tube side of IHX, air cooler, feedwater pump, and flow network. To verify the effectiveness of the TCS method, the thermohydraulics parameters of once-through steam generator (OTSG) calculated by the coupled model were compared with those calculated by single Locust model under steady and transient conditions.The results show that the two models have good consistency. The coupled platform is able to successfully simulate dynamic processes under different conditions. In addition, simulation verification is carried out under the step change of 10% FP to study its control characteristics. The results show that the control effect of the coupled platform is slightly better than that of single Locust.The control system has a good ability to adjust the ADS system, and extends the functions of traditional Locust without modifying the Locust source code. While ensuring the accuracy of the model, it increases the flexibility of modeling and improves the modeling efficiency, which can provide an important reference for further engineering applications.

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“…A numerical simulation method was used to analyse the characteristics of heat transfer and flow resistance between a liquid LBE and helium (Chen et al, 2013). Wang et al (2017) experimentally investigated the heat transfer characteristics of a liquid LBE and helium in a heat exchanger, and the influences of inlet temperature and inlet fluid mass flow rate on the total heat transfer coefficient were analysed. Liu et al (2018) designed a noncontact double-wall straight tube heat exchanger for a Kylin-II circuit, and the SST k − ω model was adopted to calculate the flow rate and temperature distribution of a liquid LBE in the heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on the heat transfer characteristics of a liquid lead–bismuth eutectic in a D-type channel

Liu

Zhang

et al. 2022

Front. Energy Res.

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A printed circuit heat exchanger (PCHE) can offer superior performance in area concentration and heat transfer efficiency. A PCHE with a liquid lead–bismuth eutectic (LBE) and supercritical carbon dioxide as working media can use these materials as intermediate heat exchangers in lead–bismuth eutectic-cooled reactors to reduce facility size and improve economy. To ensure the reliability of a numerical simulation for a liquid LBE in PCHE channels, the flow and heat transfer characteristics of a liquid LBE were investigated in a single D-type channel. The existing turbulent Prandtl number (Prt) models and the shear‒stress transport (SST) k−ω model were evaluated first by using experimental liquid metal data. Then, a suitable Prt model was proposed for the numerical simulation of the liquid LBE. Finally, the flow and heat transfer characteristics of the liquid LBE were studied in D-type straight channels and D-type zigzag channels. The study presented the effects of flow velocity, wall heat flux, equivalent diameter and zigzag channel angle on the flow resistance and heat transfer characteristics. Meanwhile, a heat transfer correlation suitable for a D-type straight channel was also proposed. The research results in this paper lay a good foundation for the development of PCHEs with an LBE as the working fluid.

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Experimental investigation of a LBE-helium heat exchanger based the ADS

Cited by 16 publications

References 19 publications

Numerical Analysis of Conjugate Heat Transfer of Supercritical CO₂ and Pb‐Bi in Tube‐in‐Tube Channels

Numerical Analysis of Conjugate Heat Transfer of Supercritical CO₂ and Pb‐Bi in Tube‐in‐Tube Channels

Development of a Simulation and Control Platform for the China ADS Based on a Thermal Coupling Method

Numerical study on the heat transfer characteristics of a liquid lead–bismuth eutectic in a D-type channel

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Experimental investigation of a LBE-helium heat exchanger based the ADS

Cited by 16 publications

References 19 publications

Numerical Analysis of Conjugate Heat Transfer of Supercritical CO2 and Pb‐Bi in Tube‐in‐Tube Channels

Numerical Analysis of Conjugate Heat Transfer of Supercritical CO2 and Pb‐Bi in Tube‐in‐Tube Channels

Development of a Simulation and Control Platform for the China ADS Based on a Thermal Coupling Method

Numerical study on the heat transfer characteristics of a liquid lead–bismuth eutectic in a D-type channel

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Numerical Analysis of Conjugate Heat Transfer of Supercritical CO₂ and Pb‐Bi in Tube‐in‐Tube Channels

Numerical Analysis of Conjugate Heat Transfer of Supercritical CO₂ and Pb‐Bi in Tube‐in‐Tube Channels