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http://dx.doi.org/10.5855/ENERGY.2012.21.3.221

HWR Shield Cooling Natural Circulation Study  

Shin, Jung-Chul (Mechanical, Automotive & Air Conditioning Department, Woosong College)
Publication Information
Journal of Energy Engineering / v.21, no.3, 2012 , pp. 221-227 More about this Journal
Abstract
The CANDU 9 shield cooling system was designed and layout with the objective of promoting natural circulation on loss of forced flow. In the present study, the shield cooling natural circulation was analyzed using verified the thermal-hydraulic code when the coolant pump or the heat exchanger was lost. This study showed that thermosyphoning cooled the end shields and prevented the end shields and the reserve water tank from boiling for at least 8 hours on loss of the shield cooling pumps but the heat exchangers still operational. With the loss of both pumps and heat exchangers, the end shields remain subcooled for up to 4 hours. To enhance thermosyphoning, the bypass connection to the line from the reserve water tank should be relocated to a point as low as possible.
Keywords
heavy water reactor; reactor shield cooling system; thermosyphoning; reserve water tank; shield cooling pump;
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  • Reference
1 "CANDU-9 480/SEU Technical Description", 69-01371-TED-003, AECL Aug, 1993.
2 P. Kidston, E. Choy, "Improved Heat Sink", 69-30000-ASD-003, AECL, May 1994.
3 L. Morris, E. Choy, "Reserve Water Tank Study", 69-34000-ASD-001, AECL, Sep, 1994.
4 Y.F.Chang, "A Thermal-hydraulic System Simulation Model for the Reactor, Boiler and Heat Transport System(SOPHT)", CNS-37-2, Ontario Hydro Document, 1977.
5 T.A.Porsching, J.H.Murphy and J.A Redfield "Stable Numerical Integration of Conservation Equations for Hydraulic Networks" Nuclear Science and Engineering, Vol 43, P218, 1971.