Thermal-hydraulic characteristics and performance of 3D straight channel based printed circuit heat exchanger

Abstract CFD study is done to propose an efficient PCHE (Printed Circuit Heat Exchanger) model; used as a recuperator in International Thermonuclear Experimental Reactor (ITER). 3D steady-state conjugate heat-transfer simulations are done with helium as a working fluid and alloy 617 as the solid substrate. Effect of variation of thermo-physical properties, operating conditions and three different design modifications are studied. Thermal hydraulic performance is found better for single as compared to double banking and is the same for aligned as compared to the staggered arrangement of the hot and cold channels. PCHE models with hemispherical dimples are found to give better thermal hydraulic performance. The performance is presented for the variation of the heat transfer density (for a PCHE model) and the pressure drop (in the hot and cold channel). Various types of flow patterns are presented to analyze the thermal-hydraulic characteristics − leading to the heat transfer enhancement by the dimples.

[1]  Qi Li,et al.  Compact heat exchangers: A review and future applications for a new generation of high temperature solar receivers , 2011 .

[2]  Jae Eun Cha,et al.  Numerical investigation on thermal–hydraulic performance of new printed circuit heat exchanger model ☆ , 2008 .

[3]  Konstantin Nikitin,et al.  New printed circuit heat exchanger with S-shaped fins for hot water supplier , 2006 .

[4]  B. K. Hajek,et al.  Numerical study on thermal hydraulic performance of a Printed Circuit Heat Exchanger , 2013 .

[5]  Richard N. Christensen,et al.  Investigation of High-Temperature Printed Circuit Heat Exchangers for Very High Temperature Reactors , 2009 .

[6]  Qiuwang Wang,et al.  Optimization of fin arrangement and channel configuration in an airfoil fin PCHE for supercritical CO2 cycle , 2014 .

[7]  Sangkwon Jeong,et al.  Hydraulic performance of a microchannel PCHE , 2010 .

[8]  Richard N. Christensen,et al.  Fabrication and design aspects of high-temperature compact diffusion bonded heat exchangers , 2012 .

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

[10]  H. L. Swami,et al.  Progress in engineering design of Indian LLCB TBM set for testing in ITER , 2014 .

[11]  Y. Kato,et al.  Heat transfer and pressure drop correlations of microchannel heat exchangers with S-shaped and zigzag fins for carbon dioxide cycles , 2007 .

[12]  Atul Srivastava,et al.  Thermal-hydraulic characteristics and performance of 3D wavy channel based printed circuit heat exchanger , 2015 .

[13]  Hee Cheon No,et al.  Physical model development and optimal design of PCHE for intermediate heat exchangers in HTGRs , 2012 .

[14]  R. Christensen,et al.  Thermal hydraulic performance testing of printed circuit heat exchangers in a high-temperature helium test facility , 2014 .

[15]  Y. Kato,et al.  Printed circuit heat exchanger thermal–hydraulic performance in supercritical CO2 experimental loop , 2006 .

[16]  Sangkwon Jeong,et al.  Development of highly effective cryogenic printed circuit heat exchanger (PCHE) with low axial conduction , 2012 .

[17]  Yasuyoshi Kato,et al.  High performance printed circuit heat exchanger , 2007 .

[18]  Justin Figley.  Numerical Modeling and Performance Analysis of Printed Circuit Heat Exchanger for Very High-Temperature Reactors , 2009 .