Share

Separation of liquid and vapor in header of MCHE.

Number: pap. 2248

Author(s) : LI J., HRNJAK P.

Summary

This paper presents the experimental study of separation of two-phase flow in a vertical header of microchannel heat exchanger (MCHE) based on quantified visualization using fast camera, modelling analysis and experimental evaluation. A condenser model is developed to explore separation effects on heat exchanger. The modeling results show the benefits that a separation condenser has over a conventional condenser is affected by the separation results in the header. A header prototype is made that has an inlet in the longitudinal center part. Two sub-passes downstream are incorporated, lower for liquid and upper vapor flow. The header for experiment is clear to provide visual access. R-134a is used as the fluid of interest and mass flux through the inlet microchannels is controlled between 55 kg/(m2s)-195 kg/(m2s). The experiment results indicate that ideal separation in that header can happen at low mass flux up to 70 kg/(m2s). Results are presented in function of liquid and vapor separation efficiencies (?l, ?v). Two phase flow inside the header is analyzed to study the mechanisms for liquid-vapor separation.

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: Separation of liquid and vapor in header of MCHE.
  • Record ID : 30018792
  • Languages: English
  • Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2016/07/11

Links


See other articles from the proceedings (274)
See the conference proceedings

Indexing