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Heat transfer and pressure drop characteristics of supercritical carbon dioxide in microchannel tubes under cooling.

Author(s) : PETTERSEN J., RIEBERER R., LEISTER A.

Summary

The paper provides heat transfer and pressure drop data for carbon dioxide (CO2) at supercritical pressures in a flat, multiport extruded aluminium tube. The tube had 25 circular ports/channels with 0.79 mm inner diameter. Data are presented for the following range of variables: mass flux 600-1200 kg/(m2s), pressure 81-101 bar and heat flux 10,000-20,000 W/m2. The temperature range investigated was 15 to 70 °C. The measured heat transfer coefficients laid in the range of 5,000 to 17,500 W/m2K) and the measured pressure drop laid in the range of 0.05 to 0.32 bar.

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Pages: 2000-1

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Details

  • Original title: Heat transfer and pressure drop characteristics of supercritical carbon dioxide in microchannel tubes under cooling.
  • Record ID : 2002-0052
  • Languages: English
  • Source: Final proceedings of the 4th IIR-Gustav Lorentzen Conference on Natural Working Fluids at Purdue.
  • Publication date: 2000/07/25

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