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  • Title: Effects of mass flow rate and droplet velocity on surface heat flux during cryogen spray cooling.
    Author: Karapetian E, Aguilar G, Kimel S, Lavernia EJ, Nelson JS.
    Journal: Phys Med Biol; 2003 Jan 07; 48(1):N1-6. PubMed ID: 12564506.
    Abstract:
    Cryogen spray cooling (CSC) is used to protect the epidermis during dermatologic laser surgery. To date, the relative influence of the fundamental spray parameters on surface cooling remains incompletely understood. This study explores the effects of mass flow rate and average droplet velocity on the surface heat flux during CSC. It is shown that the effect of mass flow rate on the surface heat flux is much more important compared to that of droplet velocity. However, for fully atomized sprays with small flow rates, droplet velocity can make a substantial difference in the surface heat flux.
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