Scaling Analysis for the Direct Reactor Auxiliary Cooling System for AHTRs

Conference · Sat Jan 01 00:00:00 EST 2011

OSTI ID:1028772

Yoder, Jr, Graydon L ^[1]; Wilson, Dane F ^[1]; Wang, X. NMN ^[2]; Lv, Q. NMN ^[2]; Sun, X NMN ^[2]; Christensen, R. N. ^[2]; Blue, T. E. ^[2]; Subharwall, Piyush ^[3]

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1. ORNL
2. Ohio State University
3. Idaho National Laboratory (INL)

The Direct Reactor Auxiliary Cooling System (DRACS), shown in Fig. 1 [1], is a passive heat removal system proposed for the Advanced High-Temperature Reactor (AHTR). It features three coupled natural circulation/convection loops completely relying on the buoyancy as the driving force. A prototypic design of the DRACS employed in a 20-MWth AHTR has been discussed in our previous work [2]. The total height of the DRACS is usually more than 10 m, and the required heating power will be large (on the order of 200 kW), both of which make a full-scale experiment not feasible in our laboratory. This therefore motivates us to perform a scaling analysis for the DRACS to obtain a scaled-down model. In this paper, theory and methodology for such a scaling analysis are presented.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1028772
• Resource Relation: Conference: American Nuclear Society, Washington, DC, USA, 20111030, 20111103
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COOLING SYSTEMS
DESIGN
HEATING
REMOVAL
AHTR Auxiliary DRACS Scaling