The Glass CHP · CHP

NOx measurement

Ventilation/dehumidification — the silent 24/7 load, with heat recovery. Part of the glass family — like our glass BESS, biogas plant and CHP.

NOx measurement
Outdoor air Fresh air Heat recovery Heating coil Hall Exhaust
Glass-box in 4 steps

Understand → See it live → What the AI does → Your benefit

Step 1 of 4
1
Understand
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See it live
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What the AI does
Your benefit

What is NOx measurement?

TA-Luft limit value for NOx in biogas CHP units: 650 mg/m³; continuous measurement mandatory from certain plant sizes — exceedance is reportable and can lead to a prohibition of operation.

The plant — right now

connect… · anonymous reference plant · read-only from the process control system, calculated in-house Exhaust gas cyl 1 … °C Before catalyst … °C After catalyst … °C Intake air … °C Excerpt from … plant measurements. To the detailed explanation page with video →

What the AI reads from these values

What the AI reads
  • Current NOx value compared to the TA-Luft limit value (650 mg/m³)
  • Deviation rate from baseline for identification of catalyst degradation
  • Trend analysis of concentration after the catalyst for process stability
  • Early warning upon approaching limit values to avoid a prohibition of operation
Scenario

Monitored: continuous

The scenario: an emission value creeps slowly upwards, only noticed during the official measurement, in the worst case leading to operational restrictions. The AI: detects the trend towards the limit value early and reports a need for action before the measurement occurs. It identifies the trend before the limit value is breached.

Why this matters

Precise NOx monitoring secures the operating permit and prevents costly shutdowns due to limit value exceedances. Monitoring enables proactive maintenance of the catalyst before reaching critical thresholds. Furthermore, it optimises combustion adjustment to comply with legal requirements. Measured value (mg/m³) · Limit value (mg/m³) → — % reserve to limit value Calculation: (Limit value − Measured value) ÷ Limit value × 100

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