The Glass CHP · CHP

Gas quality / methane number

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

Gas quality / methane number
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

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Understand
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What the AI does
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What is gas quality / methane number?

Optimal biogas composition: CH4 52–55 %, CO2 40–45 %, H2S below 200 ppm; below 48 % CH4, power loss and unstable operation occur — H2S above 500 ppm damages the engine and catalyst.

The plant — right now

connect… · anonymous reference plant · read-only from the process control system, gas volume calculated in-house … m³/h gas mixer … % gas level … % boost pressure … bar excerpt from … plant measurements. To the detailed explanation page with video →

What the AI reads from these values

What the AI reads
  • Current CH4 content to determine the calorific value
  • CO2 concentration as an indicator of gas purity
  • H2S concentration to monitor corrosion risk
  • Deviation from target value (52–55 % CH4) as an early indicator for power losses
Scenario

Monitored: continuous

The scenario: if the methane number decreases slowly, the engine begins to knock without an alarm occurring, leading to power reduction and wear. The AI: detects the quality trend early and reports it before the knocking causes damage. It detects the trend before the limit value is reached.

Why this matters

A stable methane number ensures constant electrical output and prevents costly downtime caused by unstable engine operation. Monitoring enables precise adjustment of injection quantities to fluctuating gas qualities. This protects the catalyst from pollutants and optimises the specific fuel consumption rate. Gas volume (m³/h) · methane content (%) → — kWh/h calculation path: gas volume × methane content × 9.97 kWh/m³ (methane calorific value)

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