The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2006
Filed:
Jan. 29, 2002
James W. Klett, Knoxville, TN (US);
Timothy D. Burchell, Oak Ridge, TN (US);
Ashok Choudhury, Oak Ridge, TN (US);
James W. Klett, Knoxville, TN (US);
Timothy D. Burchell, Oak Ridge, TN (US);
Ashok Choudhury, Oak Ridge, TN (US);
UT-Battelle, LLC, Oak Ridge, TN (US);
Abstract
A thermally conductive carbon foam is provided, normally having a thermal conductivity of at least 40 W/m·K. The carbon foam usually has a specific thermal conductivity, defined as the thermal conductivity divided by the density, of at least about 75 W·cm/m·° K·gm. The foam also has a high specific surface area, typically at least about 6,000 m/m. The foam is characterized by an x-ray diffraction pattern having 'doublet' 100 and 101 peaks characterized by a relative peak split factor no greater than about 0.470. The foam is graphitic and exhibits substantially isotropic thermal conductivity. The foam comprises substantially ellipsoidal pores and the mean pore diameter of such pores is preferably no greater than about 340 microns. Other materials, such as phase change materials, can be impregnated in the pores in order to impart beneficial thermal properties to the foam. Heat exchange devices and evaporatively cooled heat sinks utilizing the foams are also disclosed.