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Method and apparatus for heat extraction by controlled spray cooling

Patent ·
OSTI ID:872696
 [1];  [2];  [3];  [2]
  1. 5492 Lenore Ave., Livermore, Alameda County, CA 94550
  2. 304 Daisyfield Dr., Livermore, Alameda County, CA 94550
  3. 864 Lucille St., Livermore, Alameda County, CA 94550
+ Show Author Affiliations
Two solutions to the problem of cooling a high temperature, high heat flux surface using controlled spray cooling are presented for use on a mandrel. In the first embodiment, spray cooling is used to provide a varying isothermal boundary layer on the side portions of a mandrel by providing that the spray can be moved axially along the mandrel. In the second embodiment, a spray of coolant is directed to the lower temperature surface of the mandrel. By taking advantage of super-Leidenfrost cooling, the temperature of the high temperature surface of the mandrel can be controlled by varying the mass flux rate of coolant droplets. The invention has particular applicability to the field of diamond synthesis using chemical vapor deposition techniques.
Research Organization:
SANDIA CORP
DOE Contract Number:
AC04-94AL85000
Assignee:
Edwards, Christopher Francis (5492 Lenore Ave., Livermore, Alameda County, CA 94550);Meeks, Ellen (304 Daisyfield Dr., Livermore, Alameda County, CA 94550);Kee, Robert (864 Lucille St., Livermore, Alameda County, CA 94550);McCarty, Kevin (304 Daisyfield Dr., Livermore, Alameda County, CA 94550)
Patent Number(s):
US 5992159
OSTI ID:
872696
Country of Publication:
United States
Language:
English

References (4)

Mechanisms of film boiling heat transfer of normally impacting spray journal February 1987
High-heat-flux, low-superheat evaporative spray cooling conference February 2013
Leidenfrost Temperature and Heat-Transfer Coefficients for Water Sprays Impinging on a hot Surface conference January 1974
Controlled deposition of diamond from an acetylene-oxygen combustion flame journal May 1993

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Related Subjects

/62/134/266/
advantage
apparatus
applicability
axially
boundary
boundary layer
chemical
chemical vapor
controlled
controlled spray
coolant
cooling
deposition
deposition technique
deposition techniques
diamond
directed
droplets
embodiment
extraction
field
flux
flux rate
flux surface
heat
heat flux
isothermal
layer
mandrel
mass
mass flux
method
moved
moved axially
particular
portions
provide
providing
rate
solutions
spray
spray cooling
super-leidenfrost
surface
synthesis
taking
taking advantage
techniques
temperature
vapor
vapor deposition
varying