A two-phase natural circulation cooling has been proposed to remove melted core decay heat by external core catcher cooling system during sever accident scenario. In this paper, two types of the core catcher cooling loops, one with heated loop and the other adiabatic loop simulated with air water system are analytically studied. First, a scaling analysis was carried out for natural circulation flow in a closed loop. Based on the scaling analyses, simulation of two-phase natural circulation is carried out both for air–water and steam–water system in an inclined rectangular channel. The heat flux corresponding to the decay heat is simulated with steam generation rate or air flux into the test section to produce equivalent flow quality and void fraction. Design calculations were carried out for typical core catcher design to estimate the expected natural circulation rates. The natural circulation flow rate and two-phase pressure drop were obtained for different heat inputs or equivalent air injection rates expressed as void fraction for a select downcomer pipe size. These results can be used to scale a steam water system using scaling consideration presented. The results indicate that the air–water and steam water system show similar flow and pressure drop behavior.
Skip Nav Destination
e-mail: bwrhee@kaeri.re.kr
e-mail: rjpark@kaeri.re.kr
e-mail: tomo@kaeri.re.kr
e-mail: dosa@kaeri.re.kr
Article navigation
September 2015
Research-Article
Study of Two-Phase Natural Circulation Cooling of Core Catcher System Using Scaled Model
Shripad T. Revankar,
Shripad T. Revankar
1
Fellow ASME
School of Nuclear Engineering,
Purdue University and Pohang
e-mail: shripad@purdue.edu
School of Nuclear Engineering,
Purdue University and Pohang
University of Science and Technology
,400 Central Drive
,West Lafayette, IN 47906
e-mail: shripad@purdue.edu
1Corresponding author.
Search for other works by this author on:
Kiwon Song,
Kiwon Song
DANE,
e-mail: k1song@postech.ac.kr
Pohang University of Science and Technology
,Pohang, Gyeongbuk 790-784
, South Korea
e-mail: k1song@postech.ac.kr
Search for other works by this author on:
B. W. Rhee,
e-mail: bwrhee@kaeri.re.kr
B. W. Rhee
Korean Atomic Energy Research Institute
,Daejeon, Yuseong-gu 305-353
, South Korea
e-mail: bwrhee@kaeri.re.kr
Search for other works by this author on:
R. J. Park,
e-mail: rjpark@kaeri.re.kr
R. J. Park
Korean Atomic Energy Research Institute
,Daejeon, Yuseong-gu 305-353
, South Korea
e-mail: rjpark@kaeri.re.kr
Search for other works by this author on:
K. S. Ha,
e-mail: tomo@kaeri.re.kr
K. S. Ha
Korean Atomic Energy Research Institute
,Daejeon, Yuseong-gu 305-353
, South Korea
e-mail: tomo@kaeri.re.kr
Search for other works by this author on:
J. H. Song
e-mail: dosa@kaeri.re.kr
J. H. Song
Korean Atomic Energy Research Institute
,Daejeon, Yuseong-gu 305-353
, South Korea
e-mail: dosa@kaeri.re.kr
Search for other works by this author on:
Shripad T. Revankar
Fellow ASME
School of Nuclear Engineering,
Purdue University and Pohang
e-mail: shripad@purdue.edu
School of Nuclear Engineering,
Purdue University and Pohang
University of Science and Technology
,400 Central Drive
,West Lafayette, IN 47906
e-mail: shripad@purdue.edu
Kiwon Song
DANE,
e-mail: k1song@postech.ac.kr
Pohang University of Science and Technology
,Pohang, Gyeongbuk 790-784
, South Korea
e-mail: k1song@postech.ac.kr
B. W. Rhee
Korean Atomic Energy Research Institute
,Daejeon, Yuseong-gu 305-353
, South Korea
e-mail: bwrhee@kaeri.re.kr
R. J. Park
Korean Atomic Energy Research Institute
,Daejeon, Yuseong-gu 305-353
, South Korea
e-mail: rjpark@kaeri.re.kr
K. S. Ha
Korean Atomic Energy Research Institute
,Daejeon, Yuseong-gu 305-353
, South Korea
e-mail: tomo@kaeri.re.kr
J. H. Song
Korean Atomic Energy Research Institute
,Daejeon, Yuseong-gu 305-353
, South Korea
e-mail: dosa@kaeri.re.kr
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received June 29, 2014; final manuscript received January 12, 2015; published online April 15, 2015. Assoc. Editor: Suman Chakraborty.
J. Thermal Sci. Eng. Appl. Sep 2015, 7(3): 031006 (9 pages)
Published Online: September 1, 2015
Article history
Received:
June 29, 2014
Revision Received:
January 12, 2015
Online:
April 15, 2015
Citation
Revankar, S. T., Song, K., Rhee, B. W., Park, R. J., Ha, K. S., and Song, J. H. (September 1, 2015). "Study of Two-Phase Natural Circulation Cooling of Core Catcher System Using Scaled Model." ASME. J. Thermal Sci. Eng. Appl. September 2015; 7(3): 031006. https://doi.org/10.1115/1.4030249
Download citation file:
Get Email Alerts
Cited By
Design Optimization of a Shell-and-Tube Heat Exchanger based on Variable Baffle Cuts and Sizing
J. Thermal Sci. Eng. Appl
Related Articles
Heat Transfer Photogallery
J. Heat Transfer (February,2017)
Computational Fluid Dynamics Modeling of Flow Boiling in Microchannels With Nonuniform Heat Flux
J. Heat Transfer (January,2018)
On the Merkel Equation: Novel ε-Number of Transfer Unit Correlations for Indirect Evaporative Cooler Under Different Lewis Numbers
J. Thermal Sci. Eng. Appl (December,2017)
Entropy Generation Minimization for Boiling Flow Inside Evaporator Tube With R32 and R410A Refrigerants: A Comparison of Different Two-Phase Flow Models
J. Thermal Sci. Eng. Appl (June,2023)
Related Proceedings Papers
Related Chapters
Thermal Design Guide of Liquid Cooled Systems
Thermal Design of Liquid Cooled Microelectronic Equipment
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration
Liquid Cooled Systems
Thermal Management of Telecommunication Equipment, Second Edition