Ensuring the efficiency of gas turbiners and maintain NOx Performance
Knowing how, and which combustion control to adjust is a deciding factor on whether a turbine is operating efficiently, safely and within the environmental emissions permit.
The complex interrelationship between the exhaust gas parameters and the adjustment of the combustion process forms the basis for optimum turbine performance. For this reason, it is important to have a reliable, highly precise measuring instrument. The articles below provide information on such a device – the testo 350 Portable emission analyzer. The white paper provides real word information on turbine operations, control strategies, and measurement considerations and techniques.
The challenge.
For emission measurements on gas turbines, very low and very high gas concentrations will be encountered.
Very low CO and NOx emissions at the correct adjustment and the right operating point of the gas turbine:
- To achieve the highest measurement accuracy, the influencing factor of the exhaust gas humidity must be reduced. This includes above all the dilution affect by a high exhaust humidity (gaseous state) as well as leaching (or analyte scrubbing) due to chemical reactions between the exhaust gas parameters (NO2) and condensate (liquid state).
Very high gas concentrations during start-up and at differing load level:
- During this procedure, a gas concentration peak can occur, which cannot be compensated with a low-range sensor without sample dilution.
The solution.
The testo 350 fulfills the measurement accuracy requirements at very low and high gas concentrations:
At low gas concentrations, the combination of the COlow, NO2 sensor and the NOlow sensor, specially developed for this application with a resolution of 0.1 ppm, ensures highly accurate measurement values. The integrated gas conditioning system, high velocity sample transport, and the dilution of the exhaust gas parameters combine to offer the measurement technology you need for tuning and adjustment of gas turbines.
At unexpectedly high gas concentrations, the single slot dilution system is automatically activated, protecting your COlow or NOlow sensor from high concentrations and pre-mature wear. Measurement accuracy is maintained even at dilution factors of up to 40x. This means high concentrations are measurable without any problems.
Whitepaper gas turbine
From gas compression, to combine-cycle or single-cycle power generation, and for peaking or base-load applications – gas turbines are indispensable for producing large quantities of energy. The white paper provides real world information on turbine operations, control strategies, and measurement considerations and techniques. Some of the topics include:
- Analysis of the exhaust gas emissions
- Increasing the degree of efficiency of gas turbines
- Precise measurement at very high and very low gas concentrations
- Optimum adjustment of the combustion process
The advantages at a glance.
High-precision emission measurements with the testo 350
- High measurement accuracy at low concentrations, thanks to precise COlow and NOlow sensors.
- Measure high concentrations and peaks without additional sensor thanks to the sample dilution system (selectable 1, 2, 5, 10, 20 and 40X).
- High velocity sample transport with integrated gas conditioning system. Results in a compliance-level EPA dry sample.
- One (1) second refresh rate, Bluetooth connectivity, multiple software packages
- Easy, precise calibration can be performed on site, or at Testo.
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