Share

Flash gas bypass method for improving performance of an A/C system with a microchannel evaporator.

Number: pap. 2502

Author(s) : TUO H., HRNJAK P.

Summary

This paper demonstrates that flash gas bypass method significantly improved the performances of the microchannel evaporator and the system, compared to the conventional direct expansion (DX) system. When system in both modes operated at the same compressor speed, the system in FGB mode produces about 13 to 18% more cooling capacity at 4 to 7% higher COP than in DX mode. When compressor speed was adjusted to maintain the same cooling capacity, COP improves 37 to 55%. Based on experimental results, a detailed microchannel heat exchanger model considering the refrigerant distribution helps to identify the two mechanisms augmenting the performances: 1) improved refrigerant quality distribution and 2) the reduction of refrigerant pressure drop across the evaporator.

Available documents

Format PDF

Pages: 10 p.

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Flash gas bypass method for improving performance of an A/C system with a microchannel evaporator.
  • Record ID : 30006625
  • Languages: English
  • Source: 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2012/07/16

Links


See other articles from the proceedings (195)
See the conference proceedings

Indexing