ABSTRACT
As a high-efficiency compact heat exchanger, the printed circuit heat exchanger has been widely applied into nuclear reactor and energy industry. In the present paper, the thermal hydraulic performance of printed circuit heat exchanger 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 Reynolds number 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 Nusselt number, friction factor, and heat exchanger effectiveness 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 printed circuit heat exchanger in the energy industry.
KEYWORDS
PAPER SUBMITTED: 2018-06-20
PAPER REVISED: 2018-09-28
PAPER ACCEPTED: 2018-11-15
PUBLISHED ONLINE: 2019-03-31
THERMAL SCIENCE YEAR
2019, VOLUME
23, ISSUE
Supplement 3, PAGES [S757 - S764]
- Hesselgreaves, J. E., Compact Heat Exchangers: Selection, Design and Operation, Pergamon Pr, 2001
- Kato, Y., et al., Medium Temperature Carbon Dioxide Gas Turbine Reactor, Nuclear Engineering & Design, 230 (2004), 1-3, pp. 195-207
- 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
- Kim, J. H., et al., Hydraulic Performance of a Microchannel PCHE, Applied Thermal Engineering, 30 (2010), 14, pp. 2157-2162
- 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
- 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
- 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
- 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
- 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
- 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
- Tsuzuki, N., et al., High Performance Printed Circuit Heat Exchanger, Applied Thermal Engineering, 27(2007), 10, pp. 1702-1707
- 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
- 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
- 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
- Li, X. Q., et al., Alloy 617 for the High Temperature Diffusion-bonded Compact Heat Exchangers, Proceedings, ICAPP '08,Anaheim, CA, USA, 2008