Electrifying process heat
Part of the heat demand moves to electricity. The accumulator charges when power is available, not necessarily when the process is drawing heat.
TESSA · Industrial thermal storage
Process heat, available when it is needed.
TESSA stores energy as heat in solid materials, then delivers it to the process in the form required.
15 MWh in operation in Valleyfield
Needs
Four situations where storage makes sense.
Shifting an electric load
The heat is already electric. Charging is moved in time, which can reduce peak power demand depending on project conditions.
Working within limited power
The site’s electrical service does not cover heat peaks. Storage lets charging be spread over more hours.
Using recovered heat
Depending on the configuration, recovered heat can contribute to charging. The source is first qualified on temperature, flow and continuity.
These levers do not automatically add up. The starting point is the site’s current heat source.
Integration
TESSA is added to the process. It does not replace it.
The accumulator connects to existing heat circuits through heat exchange equipment selected for the application. Equipment already in place can remain in service.
Tessart supplies the thermal storage. Site integration is designed with your engineering team or the integrator of your choice.
How it fits together
From source to process. Four links.
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Input
Energy sources
- Electricity
- Recovered heat, depending on configuration
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Accumulator
Thermal storage
- Aluminosilicate-based solid materials
- Stored energy, in MWh
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Output
Heat exchange and distribution
- Hot air
- Steam
- Thermal oil
- Glycol
- Hot water
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Use
Process
- Drying
- Process heating
- Hot water and steam
Charging the accumulatorHeat delivered
Simplified diagram. The output is heat: the accumulator does not return electricity. Heat exchange equipment is selected for each application.
Assessment
Four data points decide a project.
The heat demand
- Consumption profileWhen the process needs heat, and how much. It sets the energy to store.
- TemperaturesThe required temperature guides the choice of fluid and heat exchange equipment.
The electrical supply
- Available powerThe site’s electrical capacity determines how fast the accumulator can charge.
- RatesThe rate structure, for energy and for power, determines the value of shifting the load.
Applications to assess
Four families of uses. Each one is studied case by case.
Drying
Hot air for drying materials or products.
Process heating
Heat delivered through thermal oil, glycol or air, depending on the process.
Hot water
Process or service hot water.
Steam
Steam generation through suitable integration.
Potential applications, to be assessed for each site. Not all of them have been deployed to date.
Project steps
A project moves forward in four steps.
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Initial conversation
We outline the process, the current heat source and the objective.
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Data collection
Consumption profile, temperatures, available power and rates.
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Preliminary analysis
A first sizing, in energy and in power, and a read on whether the project is worth pursuing.
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Engineering and integration
Detailed design and connection to the process, with your engineering team.
Your process needs heat. Let’s see whether storage fits.
Bring your consumption profile. The first conversation is about qualifying the site.