TY - GEN
T1 - Visualization and PDA Measurement of Spray inside a Thermostatic Expansion Valve
AU - Huo, Ming
AU - Lee, Chia Fon F.
N1 - Publisher Copyright:
Copyright © ICLASS 2009.All right reserved.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:85084166249
T3 - 11th International Annual Conference on Liquid Atomization and Spray Systems 2009, ICLASS 2009
BT - 11th International Annual Conference on Liquid Atomization and Spray Systems 2009, ICLASS 2009
PB - ILASS Americas/Professor Scott Samuelsen UCI Combustion Laboratory University of California Irvine, CA 92697-3550
T2 - 11th International Annual Conference on Liquid Atomization and Spray Systems, ICLASS 2009
Y2 - 26 July 2009 through 30 July 2009
ER -