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Local wall heat flux/temperature meter for convective flow and method of utilizing same

United States Patent

6,824,305
November 30, 2004
View the Complete Patent at the US Patent & Trademark Office
According to one embodiment of the invention, a method includes providing a conduit having a fluid flowing therethrough, disposing a plurality of temperature measurement devices inside a wall of the conduit, positioning at least some of the temperature measurement devices proximate an inside surface of the wall of the conduit, positioning at least some of the temperature measurement devices at different radial positions at the same circumferential location within the wall, measuring a plurality of temperatures of the wall with respective ones of the temperature measurement devices to obtain a three-dimensional temperature topology of the wall, determining the temperature dependent thermal conductivity of the conduit, and determining a multi-dimensional thermal characteristic of the inside surface of the wall of the conduit based on extrapolation of the three-dimensional temperature topology and the temperature dependent thermal conductivities.
Boyd; Ronald D. (Spring, TX), Ekhlassi; Ali (Tomball, TX), Cofie; Penrose (Houston, TX)
The Texas A & M University System (College Station, TX)
10/ 641,826
August 15, 2003
GOVERNMENT RIGHTS This invention was made with Government support from the Department of Energy (DOE Grant #DE-FG03-97ER-54452) and the National Aeronautics and Space Administration (NASA Contract NAG 9-310). The government may have certain rights in this invention.