Visualization and PDA Measurement of Spray inside a Thermostatic Expansion Valve

Ming Huo, Chia Fon F. Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Thermostatic expansion valves (TEV) are expansion devices commonly used in air-conditioning system which involves the spray and atomization process of the refrigerant. The process was studied by introducing a valve with optical access. The break-up and atomization of the refrigerant were visualized near the outlet of the orifice under different feed conditions on micro-second scale. A Phase Doppler Anemometry (PDA) was used later to measure the size of individual droplets passing the location at the outlet of the orifice and provide drops size distribution (DSD) data. In addition, the effect of the feeding pressure was analyzed by measuring the DSD at same locations with different pressure value. Through this study, a better understanding of the expansion process inside the TEV is gained which will lead to better design and control optimization.

Original languageEnglish (US)
Title of host publication11th International Annual Conference on Liquid Atomization and Spray Systems 2009, ICLASS 2009
PublisherILASS Americas/Professor Scott Samuelsen UCI Combustion Laboratory University of California Irvine, CA 92697-3550
ISBN (Electronic)9781617826535
StatePublished - Jan 1 2009
Event11th International Annual Conference on Liquid Atomization and Spray Systems, ICLASS 2009 - Vail, United States
Duration: Jul 26 2009Jul 30 2009

Publication series

Name11th International Annual Conference on Liquid Atomization and Spray Systems 2009, ICLASS 2009

Conference

Conference11th International Annual Conference on Liquid Atomization and Spray Systems, ICLASS 2009
CountryUnited States
CityVail
Period7/26/097/30/09

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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  • Cite this

    Huo, M., & Lee, C. F. F. (2009). Visualization and PDA Measurement of Spray inside a Thermostatic Expansion Valve. In 11th International Annual Conference on Liquid Atomization and Spray Systems 2009, ICLASS 2009 (11th International Annual Conference on Liquid Atomization and Spray Systems 2009, ICLASS 2009). ILASS Americas/Professor Scott Samuelsen UCI Combustion Laboratory University of California Irvine, CA 92697-3550.