Flow mal-distribution in fin-and tube evaporators for residential air-conditioning is investigated by numerical simulation. In particularly, the interlaced and the face split evaporator are compared in flow maldistribution conditions. The considered sources of mal-distribution are: Liquid/vapor distribution and airflow distribution. Furthermore, compensation of flow mal-distribution by control of individual channel superheat is studied for each type of evaporator. It is shown that the interlaced evaporator is better at flow maldistribution than the face split evaporator. However, if individual channel superheats are controlled, the face split evaporator achieves the best performance, i.e. an increase of 7% in UA-value and 1.6% to 2.4% in COP compared to the interlaced evaporator without compensation.
|Title of host publication||ICR 2011|
|Publication status||Published - 2011|
|Event||23rd IIR International Congress of Refrigeration - Prague, Czech Republic|
Duration: 21 Aug 2011 → 26 Aug 2011
Conference number: 23
|Conference||23rd IIR International Congress of Refrigeration|
|Period||21/08/2011 → 26/08/2011|