Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 85, Issue -, Pages 679-693Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2015.02.013
Keywords
Supercritical CO2; Metal foam; Heat transfer; Pressure drop
Categories
Funding
- Key Project of National Natural Science Foundation of China [51436007]
- National Key Basic Research Program of China (973 Program) [2013CB228304]
Ask authors/readers for more resources
An experiment was conducted to investigate the forced convective heat transfer and pressure drop characteristics of supercritical CO2 cooled in tubes partially filled with metal foam. The effects of CO2 inlet pressure, mass flow rate and mean bulk temperature on the heat transfer and pressure drop were analyzed. Moreover, the parametric study was performed with different porosities (void fraction, 0.85/0.9/0.95) and pore densities (number of pores per inch, 20/40/60). The heat transfer coefficient decreases at first and then increases as porosity increases, and decreases as pore density decreases and finally approaches to a near constant value. The pressure drop monotonously increases as porosity decreases and finally approaches to a near constant value, and increases at first and then decreases as pore density increases. Based on the experimental data, both correlations for heat transfer and friction factors were proposed. The maximum error between the results predicted by new correlations and measured is 15%. (C) 2015 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