Low refrigerant charge: With a focus on microchannel heat exchangers

Pega Hrnjak

Research output: Contribution to conferencePaperpeer-review

Abstract

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.

Original languageEnglish (US)
Pages272-283
Number of pages12
StatePublished - 2012
Externally publishedYes
EventASHRAE/NIST Refrigerants Conference: Moving Towards Sustainability - Gaithersburg, United States
Duration: Oct 29 2012Oct 30 2012

Other

OtherASHRAE/NIST Refrigerants Conference: Moving Towards Sustainability
Country/TerritoryUnited States
CityGaithersburg
Period10/29/1210/30/12

ASJC Scopus subject areas

  • Environmental Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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