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Reducing steam demand through condition relaxation

When strict environmental conditions drive avoidable gas consumption

Customer Scenario

A manufacturing site found that 60 to 70% of its steam consumption could not initially be accounted for. Cotopaxi analysed how steam demand changed across production and non-production periods to identify the source of this unexplained consumption.

Impact

  • Factory icon

    Utility

    Gas/Steam/HVAC

  • Energy use

    Energy

    5,500,000 kWh/year gas saving

  • Stack of bank notes

    Cost

    $250,000/year saving

  • Improvements

    Actions taken

    Relaxed conditions and reduced air-washer and unit-heater operating hours

What our energy experts revealed

Steam use extended beyond the main production demand

Steam

The analysis found that 60–70% of site steam consumption was unaccounted for, with air washers, HVAC and unit heaters among the major users.

Environmental conditioning created avoidable baseload

Sustainability icon

Air washers continued operating during non-production periods and unit heaters remained on longer than required.

Operational changes reduced demand without capital investment

Engineering icon

The site relaxed environmental conditions, shut down air washers during non-production and switched off unit heaters earlier.

From insight to action

1. Analyse

Boiler-efficiency data and the factory gas KPI were analysed across the four boilers.

2. Interpret

Engineering analysis identified the efficiency gap between Boilers 1, 2 and 3 and Boiler 4.

3. Improve

The boiler sequence was changed to prioritise the more-efficient units during normal operation.

4. Acheive

The boiler sequence was changed to prioritise the more-efficient units during normal operation.

Why conditioning demand matters

Environmental conditioning systems can create substantial steam demand even when production is reduced or stopped. Separating process demand from HVAC, air-washer and unit-heater demand helps reveal where operating conditions and schedules can be adjusted. These changes can reduce gas consumption using existing assets and controls.

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Could environmental conditioning be driving unnecessary steam demand?

Talk to our energy experts to identify unaccounted steam use and assess lower-energy operating conditions.
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