In this study experiments were performed to evaluate the spray cooling performance of three different spray nozzles using gassy-subcooled (∼Tsub = 31°C) FC-72 as the working fluid. The three different nozzles tested can be characterized as a single hollow cone spray nozzle (Nozzle A), 2×2 jet array spray nozzle (Nozzle B) and a 4×4 jet array spray nozzle (Nozzle C). For all tests, a 10×10 mm polished (600 grit) copper surface was utilized as the heater and tests were carried out at near atmospheric pressure conditions. All three nozzles were tested at various flow rates and nozzle-to-heater distances and the results were compared. Results show that changing the nozzle-to-heater distance affects heat transfer rates more than critical heat flux (CHF). The spray boiling curves for all three nozzles were similar with Nozzle C, for some cases, demonstrating the highest heat transfer rates. The disparity in CHF values between the various nozzles was more apparent. Compared at an equivalent flow rate, Nozzle C consistently produced CHF values which were higher than those of the other nozzles. Some common trends observed for all nozzles are, increasing flow rate increases heat transfer rates and critical heat flux (CHF) but decreases nozzle efficiency.
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ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference
July 8–12, 2007
Vancouver, British Columbia, Canada
Conference Sponsors:
- Heat Transfer Division
ISBN:
0-7918-4274-6
PROCEEDINGS PAPER
Spray Cooling Performance of Single and Multi-Jet Spray Nozzles Using Subcooled FC-72 Available to Purchase
Gilberto Moreno, Jr.,
Gilberto Moreno, Jr.
University of Texas - Arlington, Arlington, TX
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Seung M. You,
Seung M. You
University of Texas - Arlington, Arlington, TX
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Erlendur Steinthorsson
Erlendur Steinthorsson
Parker Hannifin Corporation, Mentor, OH
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Gilberto Moreno, Jr.
University of Texas - Arlington, Arlington, TX
Seung M. You
University of Texas - Arlington, Arlington, TX
Erlendur Steinthorsson
Parker Hannifin Corporation, Mentor, OH
Paper No:
HT2007-32429, pp. 783-790; 8 pages
Published Online:
August 24, 2009
Citation
Moreno, G, Jr., You, SM, & Steinthorsson, E. "Spray Cooling Performance of Single and Multi-Jet Spray Nozzles Using Subcooled FC-72." Proceedings of the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 1. Vancouver, British Columbia, Canada. July 8–12, 2007. pp. 783-790. ASME. https://doi.org/10.1115/HT2007-32429
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