FSB Fässer (Austria

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1. Solar integration

Solar thermal plant for fresh water and reflux heating

2. Industry Sector

Cask assembly and surface treatment

3. Industrial application

Solar thermal plant for fresh water and reflux heating

4. Process description

• Process flowsheet:

• Processes:

Operation times: 5 day/week, one ship: 5:00 – 13:00

5. Energy flows and temperature ranges

• Main heat supply system and fuel:

Gas and elextricity Steam-boiler: power 1.070 kWh Total energy demand: 2.200.000 kWh, whereof 480.000 kWh electricity and 1.720.000 kWh gas

Energy balance for the processes: 477.709,03 kWh

• Energy consumption (Sankey):

Energy-balance of the company FSB, including avoidable energy-losses (process-heat from gas)

6. Solar Thermal Plant

• Used scheme and description:

Hydraulic scheme, which is the basis for the simulation:

Description:

The solar thermal plant feeds a puffer-store, which is connected to a process-water store via a heat-exchanger. Fresh water and the warm reflux from the processes are fed into the process-water store. The average mix temperature in the store is 39,8 °C. The water in the process-water store is then heated up to 60°C via the heat-exchanger and the solar thermal plant. Warm water with 60°C can be taken continuously from the store for the processes. If there is not enough solar radiation, the boiler is used for supplying enough heat.

• Performance of the simulated solar plant:

• Pictures of the built solar system:

No information available.

7. Energy savings

• Pinch analysis results:

No information is available.

• Energy savings:

Considering a total efficiency factor of 85 %, 110.200 kWh of gas would have to be provided, to get 93.700 kWh energy. The production of 93.700 kWh solar energy results in a saving of 3.527 €/year of fossil energy, if calculated with the present energy prices.

Energy balance for the processes: 477.709,03 kWh Energy saving potential with solar heat: 93.700 kWh

8. Economic evaluation

• Economic parameters of the built solar system:

The economic evaluation was done for a combination of energy saving concepts (heat insulation, bio mass boiler…), not only for the solar integration described.

LITERATURE: AEE INTEC/JOANNEUM RESEARCH (“Styrian Promise”)

Back to EFFICIENCY FINDER FOR METAL INDUSTRY

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