Abstract:
PROBLEM TO BE SOLVED: To provide a system and method of accurately and rapidly measuring an equivalence ratio of the gas-fuel mixture in a practical gas turbine engine in real time.SOLUTION: A real-time monitoring of an equivalence ratio of a gas-fuel mixture of a gas turbine engine is provided. The system includes multiple optical probes arranged on a plurality of fuel nozzles for transmitting laser beams directly through a gas-fuel mixture or indirectly by reflecting the laser beams from a surface of a centerbody or burner tube of the fuel nozzle. The system also includes one or more detectors to measure the transmitted laser beams from the multiple optical probes. Further, the system includes a data obtaining subsystem for obtaining and processing signals from the one or more detectors to determine the equivalence ratio of the gas-fuel mixture of the nozzle.
Abstract:
PROBLEM TO BE SOLVED: To provide a gas concentration flux measuring apparatus that measures a wide area, such as a forest, is not affected by any coexisting substance, has high response properties and improved measurement stability. SOLUTION: The gas concentration flux measuring apparatus comprises: a laser light source; a laser output control unit; a wavelength modulation control unit; a first light reception apparatus; a first DC component detector; a first wavelength modulator/demodulator; an optical system; a reference cell; a second light reception apparatus; a second DC component detector; a second wavelength modulator/demodulator; a third wavelength modulator/demodulator; an analyzer; an adder; a temperature measuring means; a pressure measuring means; and a flow rate measuring means for directly measuring a flow rate component in the two horizontal directions of gas flow in a measurement region and a flow speed component in the vertical direction and outputting the measurement signals to an analyzer. The analyzer performs an analysis based on an eddy correlation rule, by using a signal inputted from the flow rate measuring means, and determines a momentum flux and concentration of gas to be measured, by using the analysis result by computation. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an improved method for determining the isomer composition of isocyanate isomer mixtures. SOLUTION: In the method for determining the isomer composition of isocyanate isomer mixtures, the actual isomer composition of the isocyanate isomer mixtures are determined, by recording the spectrum of the isocyanate isomer mixture (1) and by evaluating the spectrum using a chemometric calibration model (2). COPYRIGHT: (C)2005,JPO&NCIPI