Numerical Study on Crossflow Printed Circuit Heat Exchanger for Advanced Small Modular Reactors

Abstract Various fluids such as water, gases (helium), molten-salts (FLiNaK, FLiBe) and liquid metal (sodium) are used as a coolant of advanced small modular reactors (SMRs). The printed-circuit heat exchanger (PCHE) has been adopted as the intermediate and/or secondary heat exchanger of SMR systems because this heat exchanger is compact and effective. The size and cost of PCHE can be changed by the coolant type of each SMR. In this study, the crossflow PCHE analysis code for advanced small modular reactor has been developed for the thermal design and cost estimation of the heat exchanger. The analytical solution of single-pass, both unmixed fluids crossflow heat exchanger model was employed to calculate a two-dimensional temperature profile of a crossflow PCHE. The analytical solution of crossflow heat exchanger was simply implemented by using built-in function of the MATLAB program. The effect of fluid property uncertainty on the calculation results was evaluated. In addition, the effect of heat transfer correlations on the calculated temperature profile was analyzed by taking into account possible combinations of primary and secondary coolants in the SMR systems. Size and cost of heat exchanger were evaluated for the given temperature requirement of each SMR.

[1]  Jan Lach.  The exact solution of the nusselt's model of the cross-flow recuperator , 1983 .

[2]  Frank Kreith,et al.  Thermal energy storage and regeneration , 1981 .

[3]  Alain Triboix.  Exact and approximate formulas for cross flow heat exchangers with unmixed fluids , 2009 .

[4]  김인훈,et al.  Experimental and numerical investigations of thermal-hydraulic characteristics for the design of a Printed Circuit Heat Exchanger (PCHE) in HTGRs = 고온가스냉각로의 PCHE 설계를 위한 열수력 특성의 실험 및 수치적 연구 , 2012 .

[5]  David Reay,et al.  Compact Heat Exchangers: Selection, Design and Operation , 2001 .

[6]  W. Little,et al.  Measurement of the heat transfer characteristics of gas flow in fine channel heat exchangers used for microminiature refrigerators , 1984 .

[7]  F. E. Romie.  Transient Response of Gas-to-Gas Crossflow Heat Exchangers With Neither Gas Mixed , 1983 .

[8]  A. Shenoy,et al.  H2-MHR Conceptual Designs Based on the SI Process and HTE , 2006 .

[9]  E. C. Bradley,et al.  Pre-Conceptual Design of a Fluoride-Salt-Cooled Small Modular Advanced High Temperature Reactor (SmAHTR) , 2011 .

[10]  T. A. Kirchgessner,et al.  MEASUREMENTS OF HEAT TRANSFER AND FRICTION COEFFICIENTS FOR HELIUM FLOWING IN A TUBE AT SURFACE TEMPERATURES UP TO 5900 R , 1960 .

[11]  P. Heggs,et al.  On the search for new solutions of the single-pass crossflow heat exchanger problem , 1985 .

[12]  Tsuneo Ishimaru,et al.  Performance of Crossflow Heat Exchanger , 1976 .

[13]  R. Shah,et al.  Handbook of single-phase convective heat transfer , 1987 .

[14]  D. P. Sekulic,et al.  Fundamentals of Heat Exchanger Design , 2003 .

[15]  Chang Oh,et al.  Simplified Optimum Sizing and Cost Analysis for Compact heat Exchanger in VHTR , 2008 .

[16]  L. Richardson.  The Approximate Arithmetical Solution by Finite Differences of Physical Problems Involving Differential Equations, with an Application to the Stresses in a Masonry Dam , 1911 .

[17]  Heinrich Kühl.  Probleme des Kreuzstrom-Wärmeaustauschers , 1959 .

[18]  A. M. Binnie,et al.  The theory of the single-pass cross-flow heat interchanger , 1937 .

[19]  R. Winterton,et al.  Technical notes: where did the Dittus and Boelter equation come from , 1998 .

[20]  M. Moawed,et al.  Heat transfer and friction factor of turbulent flow through a horizontal semi-circular duct , 2011 .

[21]  V. Gnielinski.  New equations for heat and mass transfer in turbulent pipe and channel flow , 1976 .

[22]  David Southall.  Diffusion Bonding in Compact Heat Exchangers , 2009 .

[23]  Hee Cheon No,et al.  Thermal hydraulic performance analysis of the printed circuit heat exchanger using a helium test facility and CFD simulations , 2009 .

[24]  Dohee Hahn,et al.  CONCEPTUAL DESIGN OF THE SODIUM-COOLED FAST REACTOR KALIMER-600 , 2007 .

[25]  X. Peng,et al.  Experimental investigation on liquid forced-convection heat transfer through microchannels☆ , 1994 .