The Glass CHP · CHP

Waste heat recovery (WRG) unit

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

Waste heat recovery (WRG) unit
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 a waste heat recovery (WRG) unit?

Utilises exhaust gas heat (typically 380–450 °C downstream of the catalyst) for the heating circuit; increases total efficiency to over 85 % — bypass valve protects against overtemperature in the heating network.

The plant — right now

connects… · anonymous reference plant · read-only from the process control system, calculated in-house Flow: … °C Return: … °C Buffer top … °C Buffer bottom … °C Excerpt from … plant measurements. To the detailed explanation page with video →

What the AI reads from these values

What the AI reads
  • Exhaust gas temperature at WRG inlet (indicator for heat yield)
  • Differential pressure across the heat exchanger (detection of contamination/fouling)
  • Status of the bypass valve (protection against overtemperature in the heating network)
  • Flow rate of the heating circuit (validation of efficiency)
Scenario

Monitored: continuous

The scenario: if the temperature difference decreases, the CHP unit extracts less heat, resulting in lower overall efficiency and cogeneration benefit. The AI: detects the shrinking temperature difference early, before the amount of heat drops visibly. It identifies the trend before the limit value is reached.

Why this matters

Efficient WRG utilization maximises the COP and reduces specific fuel costs per generated kilowatt-hour of heat. Monitoring the temperature gradients enables preventive cleaning of the heat exchanger. This prevents thermal stress and ensures long-term availability of heating capacity. Heating water flow rate (m³/h) · Flow/return temperature difference (K) → — kW thermal Calculation path: flow rate × temperature difference × 1.16 kWh/(m³·K) (water)

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