Convective gas cooling heat transfer and pressure drop characteristics of supercritical CO2/oil mixture in a minichannel tube

The effects of PAG oil concentration on the convective gas cooling heat transfer and the pressure drop characteristics of supercritical CO2/oil mixture in minichannel tube were investigated. The test results showed that the average gas cooling heat transfer coefficient was decreased by 20.4% and the...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2007-11, Vol.50 (23-24), p.4796-4804
Main Authors: RIN YUN, YUNHO HWANG, RADERMACHER, Reinhard
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat transfer
Theoretical studies. Data and constants. Metering
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Summary:The effects of PAG oil concentration on the convective gas cooling heat transfer and the pressure drop characteristics of supercritical CO2/oil mixture in minichannel tube were investigated. The test results showed that the average gas cooling heat transfer coefficient was decreased by 20.4% and the average pressure drop was increased by 4.8 times when the oil concentration was increased from 0 to 4wt.%. The effects of the oil concentration on the convective gas cooling heat transfers and the pressure drops of the supercritical CO2/oil mixture in minichannel tubes were experimentally confirmed to be significant.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2007.03.018