A closed loop spray cooling test setup is established for the cooling of high heat flux heat sources. Eight miniature nozzles (in a multi-nozzle plate) are used to generate a spray array targeting at a 1×2 cm2 cooling surface. FC-87, FC-72, methanol and water are used as the working fluids. Thermal performance data for the multi-nozzle spray cooling in the confined and closed system are obtained at various operating temperatures, nozzle pressure drops (from 0.69 bar to 3.10 bar) and heat fluxes. It is exhibited that the spray cooler can reach the critical heat fluxes of 90 W/cm2 with fluorocarbon fluids and 490 W/cm2 with methanol. For water, the critical heat flux is higher than 500 W/cm2. The air purposely introduced in the spray cooling system with FC-72 fluid has a significant influence on heat transfer characteristics of the spray over the cooling surface.


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    Titel :

    Heat Transfer Characteristics of Evaporative Spray Cooling In a Closed Loop


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    Power Systems Conference ; 2002



    Erscheinungsdatum :

    29.10.2002




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


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    PAIS, M. / TILTON, D. / CHOW, L. et al. | AIAA | 1989


    Influence of Nozzle Geometry on Spray Characteristics in Non-evaporative and Evaporative Conditions

    Payri, F. / Salvador, F. J. / Gimeno, J. et al. | SAE Technical Papers | 2007


    Testing of an R134a Spray Evaporative Heat Sink

    Althausen, D.M. / Golliher, E.L. / Society of Automotive Engineers | British Library Conference Proceedings | 2008


    Testing of an R134a Spray Evaporative Heat Sink

    Althausen, David M. / Golliher, Eric L. | SAE Technical Papers | 2008