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Experimental study on the characteristics of a closed loop R134-a spray cooling

  • Yu Hou
  • , Jionghui Liu
  • , Xuemei Su
  • , Yang Qian
  • , Liqiang Liu
  • , Xiufang Liu
  • Xi'an Jiaotong University
  • CAS - Technical Institute of Physics and Chemistry

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

Experimental investigation on the R134-a spray cooling characteristics is presented in a closed loop system. A full-cone nozzle was applied to spray onto a heated circular copper plate. The characteristics of the R134-a spray cooling under a series of different volumetric flow rate were obtained. The results shown that volumetric flow rate improves the critical heat flux (CHF). And larger volumetric flow rate prevent the dry-out phenomenon under high heat flux. However, volumetric flow rate bring the adverse condition that reduces the system efficiency. The maximum CHF of 117.2Wcm-2 was achieved with 319K target surface temperature at 0.356Lmin-1. The results indicate that R134-a owns a great cooling characteristics in spray cooling system.

Original languageEnglish
Pages (from-to)194-200
Number of pages7
JournalExperimental Thermal and Fluid Science
Volume61
DOIs
StatePublished - 1 Feb 2015

Keywords

  • Closed loop
  • Critical heat flux
  • Heat transfer
  • Spray cooling

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