Characteristics of dry ice particles produced by expanding liquid carbon dioxide and its application for surface cleaning

Yi Hung Liu, Shuji Matsusaka

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

The characteristics of dry ice particles produced by expanding liquid carbon dioxide and its application for surface cleaning have been studied experimentally. The production of the dry ice particles was based on the Joule-Thomson effect. The ejected dry ice particles were observed using a high-speed microscope camera. Through digital image processing, the particle size and particle velocity in the jet were analyzed. To in-situ measure the size distribution of the dry ice particles, a laser diffraction method was used. The experimental results showed that the primary dry ice particles ejected from the expansion nozzle were about 1 μm in mass median diameter. The presence of a thermally insulated tube at the outlet of the nozzle enhanced the agglomeration of the particles, whereby agglomerates of about 100 μm in mass median diameter were formed. The performance of dry ice jet for removing fine particles adhering to surfaces was also evaluated using microscopic observation. It was found that the particle removal process consists of two stages-slow removal stage and rapid removal stage-that are related to the jet temperature.

Original languageEnglish
Title of host publicationMeasurement and Control of Granular Materials
Pages38-42
Number of pages5
DOIs
StatePublished - 2012
Event9th International Conference on Measurement and Control of Granular Materials, MCGM 2011 - Global High Level Academic Seminar - Shanghai, China
Duration: 27 Oct 201129 Oct 2011

Publication series

NameAdvanced Materials Research
Volume508
ISSN (Print)1022-6680

Conference

Conference9th International Conference on Measurement and Control of Granular Materials, MCGM 2011 - Global High Level Academic Seminar
Country/TerritoryChina
CityShanghai
Period27/10/1129/10/11

Keywords

  • Agglomeration
  • Dry ice
  • Jet flow
  • Particle size measurement
  • Removal efficiency

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