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Prediction of the pressure drop of CO2 in an evaporator used for air cooling.

Author(s) : POIRIER M., GIGUÈRE D., AIDOUN Z., et al.

Summary

A well instrumented experimental set-up for testing heat exchangers in a capacity range of up to 10 kW was built according to ASHRAE standards and has been used to study CO2 as the coolant in a secondary loop for applications in low temperature display cases for supermarkets. Tests were conducted with a commercial staggered air refrigeration coil. Excellent stability is obtained when operated with CO2 recirculation. Energy balances on air and on CO2 correlate within plus or minus 5%. The pressure drop in the coil was measured at different operating conditions. None of the available correlations predicting the pressure drop in the coil gave acceptable results. The presented experimental data and empirical correlation can be useful for validating theoretical models.

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Pages: 2006-2

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Details

  • Original title: Prediction of the pressure drop of CO2 in an evaporator used for air cooling.
  • Record ID : 2007-1634
  • Languages: English
  • Source: 7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006). Proceedings
  • Publication date: 2006/05/29

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