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Comparison of fin-and-tube interlaced and face split evaporators with flow mal-distribution and compensation.

Number: pap. ID: 153

Author(s) : KAERN M. R., ELMEGAARD B., LARSEN L. F. S.

Summary

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.

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Pages: 8 p.

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Details

  • Original title: Comparison of fin-and-tube interlaced and face split evaporators with flow mal-distribution and compensation.
  • Record ID : 30001570
  • 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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