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Low refrigerant charge: with a focus on microchannel heat exchangers.

Number: pap. 20

Author(s) : HRNJAK P.

Summary

This paper presents an overview of the reasons for charge reduction in air conditioning and refrigeration systems and discusses strategies for charge reduction: in compressors (oil), vessels, pipes, and heat exchangers. The focus is on heat exchangers, microchannel in particular. In addition to a trivial reduction of internal volume as a strategy for charge reduction, the effect of mass flux on void fraction and needed manipulation of circuiting is presented. A framework and example of comparison between refrigerants based on their potential for low condenser charge is provided.

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Format PDF

Pages: 12 p.

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Details

  • Original title: Low refrigerant charge: with a focus on microchannel heat exchangers.
  • Record ID : 30007998
  • Languages: English
  • Source: ASHRAE/NIST Refrigerants Conference: moving towards sustainability.
  • Publication date: 2012/10/29

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