Analysis of Heat Transfer Characteristics of Steam Generator with Axial Economizer Based on RELAP5

Huang Zhongyuan; Wang Xiaoding; Li Zhenzhong; Liu Haidong; Chen Deqi

doi:10.13832/j.jnpe.2024.050032

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Article Navigation > Nuclear Power Engineering > 2025 > Accepted Manuscript

Huang Zhongyuan, Wang Xiaoding, Li Zhenzhong, Liu Haidong, Chen Deqi. Analysis of Heat Transfer Characteristics of Steam Generator with Axial Economizer Based on RELAP5[J]. Nuclear Power Engineering. doi: 10.13832/j.jnpe.2024.050032

Citation:

Huang Zhongyuan, Wang Xiaoding, Li Zhenzhong, Liu Haidong, Chen Deqi. Analysis of Heat Transfer Characteristics of Steam Generator with Axial Economizer Based on RELAP5[J]. Nuclear Power Engineering. doi: 10.13832/j.jnpe.2024.050032

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Analysis of Heat Transfer Characteristics of Steam Generator with Axial Economizer Based on RELAP5

doi: 10.13832/j.jnpe.2024.050032

1.
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing, 400044, China
2.
Dongfang Electric Corporation Limited, Chengdu, 611731, China
3.
Liangjiang International College, Chongqing University of Technology, Chongqing, 401135, China

Received Date: 2024-05-12
Rev Recd Date: 2024-07-10

Available Online: 2025-04-22

Abstract

Abstract

The vertical natural-circulation steam generator, as a crucial equipment in pressurized water reactor nuclear power plants, enhancing its heat transfer performance is vital to the economy of the entire power plant. This study selects the steam generator of AP1000 as the research object and employs the RELAP5 system analysis program to calculate and analyze both the conventional steam generator and the steam generator with axial economizer. The heat transfer mechanism of the steam generator with axial economizer is studied, and focus on the effects of different heights of the divider plate and the recirculated water distribution ratio on the heat transfer characteristics. The results show that the steam generator with axial economizer can significantly increase the heat transfer temperature difference between the primary and secondary sides, thereby effectively enhancing the overall heat transfer efficiency. In addition, the study finds that increasing the height of the divider plate can improve the heat transfer capacity to a certain extent, and there is an optimal height at which the heat transfer power reaches its peak. Moreover, reducing the recirculated water distribution ratio helps to increase the heat transfer temperature difference, further improving the heat transfer performance. This research provides reference for the engineering analysis and design of the steam generator with axial economizer.
- Steam generator with axial economizer,
- Heat transfer characteristics,
- Divider plate heights,
- Recirculated water distribution ratio,
- Heat transfer power

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References(15)

References

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