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http://dx.doi.org/10.3795/KSME-B.2016.40.11.737

Numerical Study on Heat Transfer Performance of PCHE With Supercritical CO2 as Working Fluid  

Jeon, Sang Woo (School of Mechanical Engineering, Yeungnam Univ.)
Ngo, Ich-long (School of Mechanical Engineering, Yeungnam Univ.)
Byon, Chan (School of Mechanical Engineering, Yeungnam Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.40, no.11, 2016 , pp. 737-744 More about this Journal
Abstract
The printed circuit heat exchanger (PCHE) is regarded as a promising candidate for advanced heat exchangers for the next-generation supercritical $CO_2$ power generation owing to its high compactness and rigid structure. In this study, an innovative type of PCHE, in which the channel sizes for the heat source fluid and heat sink fluid are different, is considered for analysis. The thermal performance of the PCHE, with supercritical $CO_2$ as the working fluid, is numerically analyzed. The results have shown that the thermal performance of the PCHE decreases monotonically when the channel size of either the heat source channel or the heat sink channel, because of the decreased flow velocity. On the other hand, the thermal performance of the PCHE is found to be almost independent of the spacing between the channels. In addition, it was found that the channel cross sectional shape has little effect on the thermal performance when the hydraulic diameter of the channel remains constant.
Keywords
Printed Circuit Heat Exchanger; Supercritical $CO_2$; Heat Transfer Performance;
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1 Cho, Y. H., Lee, K. J., Moon, D. J. and Kim, Y. H., 2010, "Numerical Simulation of Thermal Performance of Printed Circuit Heat Exchangers with Microchannels of Different Shapes," Trans. Korean Soc. Mech. Eng. B, Vol. 35, No.1, pp. 61-66.   DOI
2 Assefa, K. M. and Kaushal, D. R., 2015, "A Comparative Study of Friction Factor Correlations for High Concentrate Slurry Flow in Smooth Pipes," J. Hydrol. Hydromech., Vol. 63, No. 1, pp. 13-20.
3 Yeom, C. S., Rhim, D. R. and Lee, J. I., 2014, "Power Generation Technology using Supercritical $CO_2$," KIC News, Vol. 17, No. 1, pp. 51-60.
4 Tucker, A. S., 1996, "The LMTD Correction Factor for Single-pass Crossflow Heat Exchangers with Both Fluids Unmixed," J. Heat Transfer, Vol. 118, pp. 488-490.   DOI
5 Yamagata, K., Nishikawa, K, Hasegawa, S., Fusi, T. and Yoshida, S., 1972, "Forced Convective Heat Transfer to Supercritical Water Flowing in Tubes," J. Heat Mass Transfer, Vol. 15, pp. 2575-2593.   DOI
6 Kim, I. H., No, H. C., Lee, J. I. and Jeon, B. G., 2009, "Thermal Hydraulic Performance Analysis of the Printed Circuit Heat Exchanger using a Helium Test Facility and CFD Simulations," Nuclear Engineering and Design, Vol. 239, pp. 2399-2408.   DOI
7 Kim, D. E., Kim, M. H., Cha, J. E. and Kim, S. O., 2008, "Numerical Investigation on Thermal-hydraulic Performance of New Printed Circuit Heat Exchanger Model," Nuclear Engineering and Design, Vol. 238, pp. 3269-3276.   DOI
8 Shah, R. K. and London, A. L., 1978, "Laminar Flow Forced Convection in Ducts," Academic Press, pp. 79-152.
9 Koo, G. W., Lee, S. M., Kim, K. Y., 2014, "Shape Optimization of Inlet Part of a Printed Circuit Heat Exchanger using Surrogate Modeling," Applied Thermal Engineering, Vol. 72, pp. 90-96.   DOI