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Experimental study of a light commercial refrigeration system operating under frosting conditions.

Number: pap. ID: 701

Author(s) : SILVA D. L. da, TASSOU S. A., HADAWEY A.

Summary

This paper reports the results of investigations into the frosting process of a serve-over counter cabinet. The refrigeration system was instrumented with high accuracy transducers and tested in an environmental test chamber at controlled conditions of ambient temperature and relative humidity. Measurements of the refrigerant mass flow rate, low and high side pressures, coil surface temperature and the state point of the air upstream and downstream of the evaporator were made to assess the system performance. In addition, mass and energy balances were applied on the evaporator in order to determine the cooling capacity and the accumulated mass of frost over time. The results show the influence of ambient conditions on the system performance and how frost formation affects the measured parameters. The cooling capacity and the coil temperature were correlated, indicating the potential application of the latter variable as a defrost control parameter.

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Pages: 7 p.

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Details

  • Original title: Experimental study of a light commercial refrigeration system operating under frosting conditions.
  • Record ID : 30002084
  • Languages: English
  • Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Publication date: 2011/08/21

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