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COP-based performance evaluation of domestic refrigerators using accelerated flow evaporators.

Number: pap. n. R14, 2296

Author(s) : WALTRICH P. J., BARBOSA J. R. Jr, HERMES C. J. L.

Summary

This paper investigates the impact of an alternative evaporator design, the so-called Accelerated Flow Evaporator (AFE), on the performance of household refrigerators. In this novel evaporator concept, the air-side cross section area decreases with the distance from the air flow inlet, accelerating the air as it flows across the tubes and hence improving the air-side local heat transfer coefficient. An AFE heat transfer and pressure drop calculation method proposed elsewhere (Waltrich et al., 2008) has been incorporated into an overall system model (Hermes et al., 2009) to assess the impact of the evaporator geometry on the system COP. The results were compared with experimental data obtained in a top-mount refrigerator. The predictions of working pressures, power consumption, cooling capacity and COP agreed with the experimental data to within ±10% error bands. The model was subsequently used in an optimization exercise of the AFE geometry that considered both the system COP and the evaporator cost.

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Pages: 8 p.

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Details

  • Original title: COP-based performance evaluation of domestic refrigerators using accelerated flow evaporators.
  • Record ID : 30000763
  • Languages: English
  • Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2010/07/12

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