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COP-based optimization of accelerated flow evaporators for household refrigeration applications

COP-based optimization of accelerated flow evaporators for household refrigeration applications,10.1016/j.applthermaleng.2010.07.029,Applied Thermal E

COP-based optimization of accelerated flow evaporators for household refrigeration applications   (Citations: 2)
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This paper reports an investigation on 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 [1] has been incorporated into an overall system simulation model [2] 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 mass of material.
Journal: Applied Thermal Engineering - APPL THERM ENG , vol. 31, no. 1, pp. 129-135, 2011
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