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Flow characteristics in a microchannel condenser with extraction circuitry.

Number: 210081

Author(s) : LI J., MUNCAN V., WANG D., HRNJAK P.

Summary

The present study reveals the characteristics of refrigerant flow in a microchannel condenser with the extraction circuitry. The extraction circuitry provides a potential to enhance the condenser performance at almost no cost – the condenser geometry is the same except for a few well-sized drainage holes in the header baffle. A microchannel condenser is modified to run in both the extraction mode and the conventional mode. A 1-D finite-volume model is built for the condenser and is validated with R134a experimental data. The capacities agree within ±5 % and the pressure drops agree within ± 25 %. Using this model, a numerical study is conducted on the condenser. A singleextraction- tube design and a double-extraction-tube design for the extraction mode are both simulated and compared. The flow characteristics in the extraction tube are revealed for a physically possible range of liquid separation efficiency. The effects of flow resistance in the extraction tube on the phase separation efficiency and the condenser performance are also studied.

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Pages: 10

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Details

  • Original title: Flow characteristics in a microchannel condenser with extraction circuitry.
  • Record ID : 30028627
  • Languages: English
  • Subject: Technology
  • Source: 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2021/05
  • Document available for consultation in the library of the IIR headquarters only.

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