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2010•Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and AtomsRequires access

Steady-State Behavior of Passive Residual Heat Removal System

Changqi Yan

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Abstract

One design of secondary-side passive residual heat removal system(PRHRS) was presented based on the prototype of AP1000primary system.The RELAP5/ MOD3.2code was used to simulate and analyze the steady-state behaviors of the PRHR in normal operating conditions and operating transient.The results show that secondary-side PRHR loop is capable of being under standby conditions due to the density difference of hot and cold water and the pressure balance in on-load operating conditions of primary system.In addition,the effect of the height between steam generator and PRHR heat exchanger on steady-state behaviors was analyzed according to the results.

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What this paper is about

One design of secondary-side passive residual heat removal system(PRHRS) was presented based on the prototype of AP1000primary system.The RELAP5/ MOD3.2code was used to simulate and analyze the steady-state behaviors of the PRHR in normal operating conditions and operating transient.The results show that secondary-side PRHR loop is capable of being under standby conditions due to the density difference of hot and cold water and the pressure balance in on-load operating conditions of primary system.In addition,the effect of the height between steam generator and PRHR heat exchanger on steady-state behaviors was analyzed according to the results.

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Available abstract

One design of secondary-side passive residual heat removal system(PRHRS) was presented based on the prototype of AP1000primary system.The RELAP5/ MOD3.2code was used to simulate and analyze the steady-state behaviors of the PRHR in normal operating conditions and operating transient.The results show that secondary-side PRHR loop is capable of being under standby conditions due to the density difference of hot and cold water and the pressure balance in on-load operating conditions of primary system.In addition,the effect of the height between steam generator and PRHR heat exchanger on steady-state behaviors was analyzed according to the results.

Key concepts: Heat exchanger, Residual, Steady state (chemistry), Transient (computer programming), Boiler (water heating), Nuclear engineering, Heat load, Mechanics

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