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research-article

Large Scale PWR Passive Containment Cooling System Wind Tunnel Test

[+] Author and Article Information
Huang Jingyu

Department of Nuclear Process Systems, Shanghai Nuclear Engineering Research and Design Institute, No.29 Hong Cao Road, Shanghai, China, 200233
huangjingyu@snerdi.com.cn

Pan Xinxin

Department of Nuclear Process Systems, Shanghai Nuclear Engineering Research and Design Institute, No.29 Hong Cao Road, Shanghai, China, 200233
panxinxin@snerdi.com.cn

Song Chunjing

Department of Nuclear Process Systems, Shanghai Nuclear Engineering Research and Design Institute, No.29 Hong Cao Road, Shanghai, China, 200233
songcj@snerdi.com.cn

1Corresponding author.

ASME doi:10.1115/1.4042495 History: Received October 27, 2017; Revised January 06, 2019

Abstract

CAP1400 is a large pressurized water reactor nuclear power plant which relies on engineering safety features such as passive containment cooling system (PCS) to remove decay heat by natural convection, condensation and water evaporation. During normal operation, PCS is designed to perform passive containment cooling depending on air natural convection in the air path. Flow resistance and wind-neutrality characteristic are the key factors of air path cooling. To understand the performance of PCS air path, an integrated scaled wind tunnel test is performed. The test studied pressure distribution in the air path in a set of cases of different wind angles, wind speeds and surroundings. Results show that wind pressure distribution in inner annular of air path is not affected by wind speed, wind angle, landforms and surroundings, while local even flow exists in outer annular. Therefore, PCS air path is of "wind-neutrality" and air flow will not be adversely affected by environment wind.

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