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Dynamics of cryogen deposition relative to heat extraction rate during cryogen spray cooling.
 

Summary: Dynamics of cryogen deposition relative to heat extraction rate during
cryogen spray cooling.
Wim Verkruysse*a
, Boris Majarona,b
, Guillermo Aguilara,c
, Lars O Svaasandd
and J. Stuart Nelsona
,
a
Beckman Laser Institute and Medical Clinic, Univ. of California, Irvine, CA 92162
b
Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
c
Chemical and Biochemical Engineering and Materials Science, Univ. of California, Irvine, CA 92162
d
University of Trondheim, N-704 Trondheim Norway
ABSTRACT
Goal is to investigate how delivery nozzle design influences the cooling rate of cryogen spray as used in skin laser
treatments. Cryogen was sprayed through nozzles that consist of metal tubes with either a narrow or wide diameter and two
different lengths. Fast-flashlamp photography showed that the wide nozzles, in particular the long wide one, produced a

  

Source: Aguilar, Guillermo - Department of Mechanical Engineering, University of California at Riverside

 

Collections: Engineering