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A study on cycle designs for light commercial CO2 refrigeration systems.

Number: pap. n. 163

Author(s) : MONTAGNER G. P., MELO C.

Summary

This paper compares three different cycle designs – capillary tube, thermostatic valve and medium-pressure receiver – by experimentally evaluating the system behavior under variable ambient temperature conditions. To this end, a detailed analysis was carried out focused on the effects of both the cycle design and ambient temperature on the system performance. It is shown that the thermostatic valve and the capillary tube designs have contrasting effects on the evaporator superheating and discharge pressure and that their effects on the overall system performance are quite similar. It is also shown that the medium-pressure receiver design is able to simultaneously control the superheating and the discharge pressure, leading to a performance improvement at low ambient temperatures. At high ambient temperatures no significant differences between the studied designs were observed.

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Pages: 8 p.

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Details

  • Original title: A study on cycle designs for light commercial CO2 refrigeration systems.
  • Record ID : 30004288
  • Languages: English
  • Source: 10th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2012). Proceedings. Delft, The Netherlands, June 25-27, 2012.
  • Publication date: 2012/06/25

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