Share

IIR document

New low global warming halogenated olefin working fluids for use in two-phase cooling.

Number: pap. n. 1282

Author(s) : JUHASZ J., SIMONI L.

Summary

Two-phase cooling solutions address thermal management for large heat density electronic applications, such as power electronics, electric vehicles and server systems. Passive two-phase cooling systems rely on latent heat of liquid vaporization to displace heat without moving components. Traditionally, fluids like saturated halogenated carbons potentially with ethers and ketones, as well as water, have been used. Although water is an excellent working fluid for such applications due to its large heat of vaporization and surface tension, isolation from electrical components for cooling is necessary. Even in a heat pipe, where the working fluid is sequestered, there is the potential for leaks, which could ruin the electronic components. Furthermore, the push towards lower global warming potential (GWP) working fluids has motivated a search for halogenated olefins for passive two-phase cooling. The newly developed halogenated olefins can offer effective heat removal with improved reliability and a smaller footprint than traditional cooling systems. These halogenated olefins are being developed with characteristics on both excellent safety and environmental attributes, where GWP is less than 10. Having non-flammable, non-conductive and higher boiling points than traditional refrigerants which is ideal in applications where excessive pressure buildup is a concern. Their fluid properties allow for direct contact, or immersion, with electronic components as they possess high resistivity, dielectric constant and breakdown voltage.

Available documents

Format PDF

Pages: 8

Available

  • Public price

    20 €

  • Member price*

    Free

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

Details

  • Original title: New low global warming halogenated olefin working fluids for use in two-phase cooling.
  • Record ID : 30026092
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1282

Links


See other articles from the proceedings (632)
See the conference proceedings

Indexing