Experimental Validation of Flow Uniformity Improvement by a Perforated Plate in the Heat Exchanger of SFR Steam Generator

Nguyen, Van Toan; Im, Sunghyuk; Jung, Yo Han; Choi, Soo‐Jeong; Kim, Byoung-Jae

doi:10.3390/en14185846

Cited by 3 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where, β is the average ratio of the velocity or temperature, which can be calculated by Equation (17), and β i is the flow rate or temperature ratio, which is defined by Equation (18).…”

Section: Discussionmentioning

confidence: 99%

“…Wang et al [17] reviewed the utility of the porous baffle and confirmed that the porous baffle reduced the mal-distribution by 1/3 compared to the prototype baffle. Kim et al [18] considered using a multi-porous plate to ensure a uniform flow rate distribution of a heat exchanger used in a sodium-cooled fast reactor (SFR) steam generator. The improvement of flow uniformity and pressure drop through the use of multi-porous plates was confirmed through experiment and analysis.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Study on Non-Uniform Temperature Distribution and Thermal Performance of Plate Heat Exchanger

Ham

Lee

et al. 2021

Energies

View full text Add to dashboard Cite

In this study, computational fluid dynamics (CFD) analysis was performed to investigate the cause of the thermal stratification in the channel and the temperature non-uniformity of the plate heat exchanger. The flow velocity maldistribution of the channel and the merging parts caused temperature non-uniformity in the channel width direction. The non-uniformity of flow velocity and temperature in the channel is shown in Section 1 > Section 3 > Section 2 from the heat exchanger. The non-uniform temperature distribution in the channel caused channel stratification and non-uniform outlet temperature. Stratification occurred at the channel near the merging due to the flow rate non-uniformity in the channel. In particular, as the mass flow rate increased from 0.03 to 0.12 kg/s and the effectiveness increased from 0.436 to 0.615, the cold-side stratified volume decreased from 4.06 to 3.7 cm3, and the temperature difference between the stratified area and the outlet decreased from 1.21K to 0.61K. The increase in mass flow and the decrease in temperature difference between the cold and hot sides alleviated the non-uniformity of the outlet temperature due to the increase in effectiveness. Besides, as the inlet temperature difference between the cold and the hot side increases, the temperature non-uniformity at the outlet port is poor due to the increase in the stratified region at the channel, and the distance to obtain a uniform temperature in the outlet pipe increases as the temperature at the hot side increases.

show abstract

“…where, β is the average ratio of the velocity or temperature, which can be calculated by Equation (17), and β i is the flow rate or temperature ratio, which is defined by Equation (18).…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Study on Non-Uniform Temperature Distribution and Thermal Performance of Plate Heat Exchanger

Ham

Lee

et al. 2021

Energies

View full text Add to dashboard Cite

show abstract

Innovative concept of splitting water flow rate of cross flow heat exchangers as a solution for reduction of non-uniformity effect – Thermal modelling and feasibility analysis

Taher,

Derakhshandeh,

El Hage

et al. 2024

Applied Thermal Engineering

View full text Add to dashboard Cite

Thermal Characteristic Analysis of Sodium in Diluted Oxygen via Thermogravimetric Approach

et al. 2022

View full text Add to dashboard Cite

As the main reactor type of the fourth-generation nuclear power systems, sodium-cooled fast reactors are now designed and built worldwide. A sodium pool cooling circulation process is indispensable in a sodium-cooled fast reactor. However, the sodium pool fire design is the basis of accidents in sodium-cooled fast reactors. The fire hazard caused by the sodium–oxygen reaction and fast reactor safety have attracted extensive attention. Dry powder is widely used as an effective fire-extinguishing agent to control sodium fire. The sodium will burn in an oxygen-depleted atmosphere when using dry powder to cover fire. In this study, the change law of thermogravimetry of melted sodium is studied by thermogravimetric analysis (TGA) and the apparent activation energy (Ea) is obtained, which has a linear relationship with the oxygen concentration. The results can provide a reference for improving the engineering design standards of sodium fire suppression systems and can also be incorporated into simulation software to improve the accuracy of fire suppression simulations.

show abstract

Experimental Validation of Flow Uniformity Improvement by a Perforated Plate in the Heat Exchanger of SFR Steam Generator

Cited by 3 publications

References 17 publications

Numerical Study on Non-Uniform Temperature Distribution and Thermal Performance of Plate Heat Exchanger

Numerical Study on Non-Uniform Temperature Distribution and Thermal Performance of Plate Heat Exchanger

Innovative concept of splitting water flow rate of cross flow heat exchangers as a solution for reduction of non-uniformity effect – Thermal modelling and feasibility analysis

Thermal Characteristic Analysis of Sodium in Diluted Oxygen via Thermogravimetric Approach

Contact Info

Product

Resources

About