Jin Jiang’s research while affiliated with Western University and other places

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Publications (2)


Design and analysis of improved two-phase natural circulation systems with thermoelectric generator
  • Article

May 2020

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11 Reads

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5 Citations

Annals of Nuclear Energy

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Jin Jiang

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Dekui Zhan

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[...]

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Xiangyun Liu

Design improvement of two-phase natural circulation systems with thermoelectric generator (TEG) is proposed in this paper. In the systems designed, the TEG produces electricity with heat energy of the systems. The electricity is further supplied to a pump and a group of agitators. In this way, circulation flow in the systems and external heat transfer of heat exchangers can be enhanced. Feasibility and effectiveness of the designed systems are analyzed through numerical simulation. The results indicate that by regulating the allocation of electricity between different loads, enough inlet subcooling of the pump can be ensured. Thus, the potential cavitation can be avoided. Comparative analysis of the systems performance with that of the natural circulation systems are carried out. Analysis results indicate that circulation flow and heat transfer are markedly enhanced with the systems designed.


A Review of Study and Design Improvement of Natural Circulation-Based Heat Removal Systems

January 2017

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59 Reads

In this paper, study and design improvement of natural circulation-based heat removal system in nuclear power plants are reviewed. Previous study on design improvement of such systems mainly focuses on the natural circulation phenomena, including phenomena identification and modeling, computation codes development, and experimental study. Design of such systems limits to adaption to major drawback of the phenomena, i.e., the weak driving force. Improvement measures proposed to cope with the problem include modification of structure parameters and application of nanofluids in natural circulation systems. Current study from the aspect of energy conversion is introduced. In the study, energy conversion of natural circulation systems is analyzed. Root cause of weak driving force of such systems is uncovered as the low driving power conversion efficiency. Correspondingly, efficiency boosters with different structures are proposed. With boosters designed, energy conversion from heat energy of the system to available power is improved. The power is further used to enhance circulation flow and heat transfer of the system. Numerical simulation of boosters designed and experimental validation of the concept is conducted. Effectiveness of efficiency boosters is confirmed. Based on survey of these research works, forecast on design improvement of natural circulation systems is presented.

Citations (1)


... In most of integral reactor designs, reactor core, coolant pumps, steam generators and pressurizer are all packed inside the reactor pressure vessel (Buongiorno et al., 2012;Fetterman et al., 2011;Wu, et al., 2016;Wang et al., 2020aWang et al., , 2020b to form a compact system, as shown in Fig. 1. Such configuration makes it possible for pre-fabrication and testing at factories, which simplifies on-site installation process, reduces the number of auxiliary systems, and eliminates many pipe connections, thus, reducing the potential risks sources of loss of coolant accidents. ...

Reference:

Relaxation of the requirements on loop height and heat transfer area of a passive heat removal system in integral SMR using a self-powered booster
Design and analysis of improved two-phase natural circulation systems with thermoelectric generator
  • Citing Article
  • May 2020

Annals of Nuclear Energy