International Scientific Journal

Thermal Science - Online First

Authors of this Paper

External Links

online first only

Numerical investigation on thermal performance and flow characteristics OFZ and S shape PCHE using S-CO2

As a high-efficiency compact heat exchanger, the printed circuit heat exchanger (PCHE) has been widely applied into nuclear reactor and energy industry. In the present paper, the thermal-hydraulic performance of PCHE based on S-CO2 Brayton power cycle has been numerically investigated for various channel shape and bend angle. A total of seven different shaped channels including straight, Z-10, Z-20, Z-30, S-10, S-20, S-30 are modeled, and evaluated according to the heat transfer and friction performances within the Re of 5000-30000. The inlet temperature/outlet pressure of hot channel and cold channel are 553 K/2.6 MPa and 381 K/8.5 MPa, respectively. The flow patterns, average Nu, friction factor f and heat exchanger effectiveness η are obtained. On the comprehensive consideration of heat transfer enhancement and friction, the S-20 channel produces the best thermal performance. This investigation has provided important reference data for the design of advanced PCHE in the energy industry.
PAPER REVISED: 2018-09-28
PAPER ACCEPTED: 2018-11-15
  1. Hesselgreaves, J. E., Compact Heat Exchangers: Selection, Design and Operation, Pergamon Pr, 2001
  2. Kato, Y., et al., Medium Temperature Carbon Dioxide Gas Turbine Reactor, Nuclear Engineering & Design, 230 (2004), 1-3, pp. 195-207
  3. Kim, I. H., et al., Thermal Hydraulic Performance Analysis of the Printed Circuit Heat Exchanger using a Helium Test Facility and CFD Simulations, Nuclear Engineering & Design, 239(2009), 11, pp. 2399-2408
  4. Kim, J. H., et al., Hydraulic Performance of a Microchannel PCHE, Applied Thermal Engineering, 30 (2010), 14, pp. 2157-2162
  5. Figley, J., et al., Numerical Study on Thermal Hydraulic Performance of a Printed Circuit Heat Exchanger, Progress in Nuclear Energy, 68(2013), pp. 89-96
  6. Mylavarapu, S. K., et al., Thermal Hydraulic Prformance Testing of Printed Circuit Heat Exchangers in a High-temperature Helium Test Facility, Applied Thermal Engineering, 65(2014), 1-2, pp. 605-614
  7. Chen, M. H., et al., Pressure Drop and Heat Transfer Characteristics of a High-temperature Printed Circuit Heat Exchanger, Applied Thermal Engineering, 108(2016), pp. 1409-1417
  8. Lai, Z. C., et al., Numerical Simulation of Refrigerant Flow Condensation Characteristics in Zigzag Channel of Printed Circuit Heat Exchanger, Chinese Journal of Refrigeration Technology, 36(2016), 4, pp. 29-35
  9. Nikitin, K., et al., Printed Circuit Heat Exchanger Thermal-hydraulic Performance in Supercritical CO2 Experimental Loop, International Journal of Refrigeration, 29(2006), 5, pp. 807-814
  10. Ngo, T. L., et al., New Printed Circuit Heat Exchanger with S-shaped Fins for Hot Water Supplier, Experimental Thermal & Fluid Science, 30(2006), 8, pp. 811-819
  11. Tsuzuki, N., et al., High Performance Printed Circuit Heat Exchanger, Applied Thermal Engineering, 27(2007), 10, pp. 1702-1707
  12. Kim, D. E., et al., Numerical Investigation on Thermal-hydraulic Performance of New Printed Circuit Heat Exchanger Model, Nuclear Engineering & Design, 238(2008), 12, pp. 3269-3276
  13. Xu, X. Y., et al., Optimization of Fin Arrangement and Channel Configuration in an Airfoil Fin PCHE for Supercritical CO2 Cycle, Applied Thermal Engineering, 70(2014), 1, pp. 867-875
  14. Jeon, S., et al., Thermal Performance of Heterogeneous PCHE for Supercritical CO2 Energy Cycle, International Journal of Heat & Mass Transfer, 102(2016), pp. 867-876
  15. Li, X. Q., et al., Alloy 617 for the High Temperature Diffusion-bonded Compact Heat Exchangers, Proceedings, ICAPP '08,Anaheim, CA, USA, 2008