Control of Advanced Reactor-Coupled Heat Exchanger System: Incorporation of Reactor Dynamics in System Response to Load Disturbances

Nuclear Engineering and Technology

Isaac Skavdahl¹  Vivek Utgikar¹  Piyush Sabharwall²  Minghui Chen³  Xiaodong Sun³  Richard Christensen⁴ 

[1] Department of Chemical and Materials Engineering, University of Idaho, 875 Perimeter Dr., Moscow, ID 83844, USA;Idaho National Laboratory, 1955 N. Fremont Ave., Idaho Falls, ID 83415, USA;Nuclear Engineering Program, Department of Mechanical and Aerospace Engineering, The Ohio State University, 281 W. Lane Ave., Columbus, OH 43210, USA;Nuclear Engineering Program, University of Idaho, 1776 Science Center Dr., Idaho Falls, ID 83402, USA;

关键词: Advanced nuclear reactors;    Control system response;    Heat exchangers;    Load disturbances;   

DOI  :  10.1016/j.net.2016.05.001

来源: DOAJ

【 摘 要 】

Alternative control schemes for an Advanced High Temperature Reactor system consisting of a reactor, an intermediate heat exchanger, and a secondary heat exchanger (SHX) are presented in this paper. One scheme is designed to control the cold outlet temperature of the SHX (Tco) and the hot outlet temperature of the intermediate heat exchanger (Tho2) by manipulating the hot-side flow rates of the heat exchangers (Fh/Fh2) responding to the flow rate and temperature disturbances. The flow rate disturbances typically require a larger manipulation of the flow rates than temperature disturbances. An alternate strategy examines the control of the cold outlet temperature of the SHX (Tco) only, since this temperature provides the driving force for energy production in the power conversion unit or the process application. The control can be achieved by three options: (1) flow rate manipulation; (2) reactor power manipulation; or (3) a combination of the two. The first option has a quicker response but requires a large flow rate change. The second option is the slowest but does not involve any change in the flow rates of streams. The third option appears preferable as it has an intermediate response time and requires only a minimal flow rate change.

【 授权许可】

Unknown