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Empirical heat transfer and pressure drop correlations for a new microchannel heat exchanger between carbon dioxide and water.

Author(s) : KATO Y., GNO T. L., NIKITIN K., et al.

Summary

Empirical correlations of heat transfer and pressure drop performance have been proposed for a new microchannel heat exchanger for a hot water supplier with S-shaped fins, using supercritical carbon dioxide (S-CO2) as the heating medium. An integral temperature difference method has been applied for consideration of a strong nonlinearity in thermo-physical properties of CO2 around its critical point. Experiments were carried out under pressures of 9.5-12.5 MPa, flow rates of 25-70 kg/h, and inlet temperatures of 100-120°C for the S-CO2 side, and flow rates of 20-50 kg/h and inlet temperatures of 7-25°C for the water side.

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Pages: 2008-2

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Details

  • Original title: Empirical heat transfer and pressure drop correlations for a new microchannel heat exchanger between carbon dioxide and water.
  • Record ID : 2009-0088
  • Languages: English
  • Source: 8th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2008)
  • Publication date: 2008/09/07

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