Journal
APPLIED THERMAL ENGINEERING
Volume 127, Issue -, Pages 975-985Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2017.08.113
Keywords
Super critical CO2 heat exchanger; Printed circuit heat exchanger (PCHE); Thermal and hydraulic performance; Nusselt number; Friction factor
Funding
- National Research Foundation of Korea [21A20131700001] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
The numerical study of thermal and hydraulic performance of a supercritical CO2 (SCO2) printed circuit heat exchanger (PCHE) has been conducted and validated using published experimental data. A domain optimization study has been carried out to finalize a PCHE domain with significantly reduced computational time without compromising the accuracy of the solution. The optimized domain was used to evaluate the thermal and hydraulic performance of the heat exchanger with a wide range of Reynolds numbers and different geometrical configurations. In contrast to subcritical region, thermophysical properties of CO2 undergo sharp variations close to the critical point. In order to capture the swift variation in thermophysical properties of CO2 and to ensure accurate prediction of thermal and hydraulic performance of heat exchanger, properties of SCO2 were computed using REFPROP. MATLAB was linked through a script to REFPROP and high-resolution real gas property (RGP) file was generated and supplied to a commercial code ANSYS-CFX for numerical simulations. (C) 2017 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available