Patent ID: 8460936

Claim:
A method of measuring concentration of liquid state organic fuel, comprising: providing an apparatus of measuring concentration of liquid state organic fuel, the apparatus comprising: a catalyst layer; a diffusion layer, coated with the catalyst layer; a fuel chamber for containing the liquid state organic fuel having an unknown concentration, wherein the diffusion layer is located between the fuel chamber and the catalyst layer; a reactive gas chamber for containing a reactive gas, wherein the catalyst layer is located between and is directly connected with the reactive gas chamber and the diffusion layer, the liquid state organic fuel having the unknown concentration in the fuel chamber diffuses from the diffusion layer to the catalyst layer, a combustion reaction of the liquid state organic fuel having the unknown concentration and the reactive gas is conducted in the catalyst layer so as to consume the reactive gas in the reactive gas chamber and generate a gaseous product; and a sensor disposed on the reactive gas chamber to measure concentration of the reactive gas in the reactive gas chamber; establishing at least one first reactive gas concentration vs. time curve, the first reactive gas concentration vs. time curve is corresponding to a liquid state organic fuel having one known concentration; supplying a liquid state organic fuel having the unknown concentration to the fuel chamber; supplying the reactive gas to the reactive gas chamber; stopping the supply of the reactive gas to the reactive gas chamber and measuring the concentration of the reactive gas in the reactive gas chamber so as to obtain a second reactive gas concentration vs. time curve; and estimating the concentration of the liquid state organic fuel having the unknown concentration in accordance with a relationship between the second reactive gas concentration vs. time curve and the first reactive gas concentration vs. time curve.