Thermal hydraulic characteristics of helical coil once-through steam generator under ocean conditions

Tian-Ze Bai; Chang-Hong Peng

doi:10.1007/s41365-022-01108-9

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Thermal hydraulic characteristics of helical coil once-through steam generator under ocean conditions

NUCLEAR ENERGY SCIENCE AND ENGINEERING | Updated：2022-11-22

- Thermal hydraulic characteristics of helical coil once-through steam generator under ocean conditions
- Nuclear Science and Techniques Vol. 33, Issue 10, Article number: 134(2022)
- Affiliations：
  
  1.School of Nuclear Science and Technology, University of Science and Technology of China, No. 96, Jinzhai Road, Baohe District, Hefei 230026, China
- Author bio：
  
  pengch@ustc.edu.cn
- Funds：
- DOI：10.1007/s41365-022-01108-9
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Tian-Ze Bai, Chang-Hong Peng. Thermal hydraulic characteristics of helical coil once-through steam generator under ocean conditions. [J]. Nuclear Science and Techniques 33(10):134(2022)
DOI：

Tian-Ze Bai, Chang-Hong Peng. Thermal hydraulic characteristics of helical coil once-through steam generator under ocean conditions. [J]. Nuclear Science and Techniques 33(10):134(2022) DOI： 10.1007/s41365-022-01108-9.

摘要

Abstract

Owing to its advantages of high heat transfer efficiency and compactness, the helical coil once-through steam generator (HCOTSG) can be used in floating nuclear power plants and has been widely used in the design of small modular reactors. The helical tubular geometric structure of the HCOTSG allows heat transfer and local flow changes to occur under complex ocean conditions. In this study, theoretical models of ocean conditions are added to the RELAP5/MOD3.3 code and verified. Using the modified RELAP5 code, the thermal-hydraulic characteristics of the HCOTSG under ocean conditions are simulated. The results show that under rolling conditions, the flow oscillation amplitudes of the single liquid-phase, two-phase flow, and single gas-phase regions are different. A circular change in the horizontal position of the helical tube causes the fluctuation of the parameters to change periodically. A phase difference of approximately 3.9 s at a flow rate of 23 kg/s is observed in the flow fluctuation along the axial direction. The driving force, period, and amplitude of rolling significantly affect the flow fluctuation in the HCOTSG. In natural circulation, the flow in the HCOTSG is complex, and the primary-side flow fluctuation can reduce the trough of the flow oscillation at the helical tube by approximately 24.3%.

关键词

Keywords

RELAP5HCOTSGOcean conditionsThermal-hydraulic analysisFlow oscillation

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Related Institution

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