Patent ID: 8646310
Filing Date: 2014-02-11
Classification: G01N,Y10T

Abstract:
1. A method for detecting a gas contained in a fluid with use of a gas sensor, the method comprising: a step (a) of preparing the gas sensor, wherein: the gas sensor comprises a catalyst layer and a pipe-shaped thermoelectric power generation device, the pipe-shaped thermoelectric power generation device comprises: the plurality of first cup-shaped components and the plurality of second cup-shaped components are stacked alternately and repeatedly along the axial direction, the first electrode and the second electrode are provided respectively at one end and at the other end of the pipe-shaped thermoelectric power generation device, each of the first cup-shaped components has an internal surface and an external surface, each of the first cup-shaped components comprises a first through-hole at a bottom end thereof, a cross-sectional area of each of the first cup-shaped components decreases in a direction toward the bottom end thereof, each of the second cup-shaped components has an internal surface and an external surface, each of the second cup-shaped components comprises a second through-hole at a bottom end thereof, a cross-sectional area of each of the second cup-shaped components decreases in a direction toward the bottom end thereof, the internal through-hole is composed of the plurality of the first through-holes and the plurality of the second through-holes, each first cup-shaped component is inserted in one adjacent second cup-shaped component in such a manner that the first external surface of each first cup-shaped component is adhered to the second internal surface of the one adjacent second cup-shaped component, the other adjacent second cup-shaped component is inserted in each first cup-shaped component in such a manner that the first internal surface of each first-cup shaped component is adhered to the second external surface of the other adjacent second cup-shaped component, and the catalyst layer is disposed on an internal surface of the internal through-hole; a step (b) of supplying the fluid through the internal through-hole to generate a voltage difference between the first electrode and the second electrode; and a step (c) of detecting the gas contained in the fluid on the basis of the voltage difference.