Berglandmilch (Austria)

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1. Case study or built example
2. Industry Sector


3. Industrial application

Process-water heating and integration in a central warm-water store

4. Process description

  • Process flowsheet:

Process description-Berglandmilch (Austria).jpg

Fig: Flowsheet of the “Berglandmilch” dairy

  • Processes:

Berglandmilch produces different kinds of cheese in this factory. Milk, water and fermentation cultures (rennet, lactic bacteria, molds etc.) are put into the vat. The casein in the milk coagulates. During and after coagulation the curdled paste is cut with rotating knives in order to obtain smaller or larger pieces. In this phase of the production process the whey is removed. The curdled cheese is pressed into forms, excess whey is removed. The formed cheese is cured in salt water for a few hours and then stored in temperated warehouses until ready for sale.

Processes with thermal energy demand

Processes with thermal energy demand.jpg

5. Energy flows and temperature ranges

  • Main heat supply system and fuel:

No information is available.

  • Energy consumption (Sankey):

No information is available.

  • Temperature ranges and other parameters:

No information is available.

6. Solar Thermal Plant

  • Used scheme:

No information is available.

  • Description of the main features and components:

No information is available.

  • Pictures of the built solar system:

No information available.

7. Energy savings

  • Pinch analysis results:

The pinch temperature is low, about 295 K, 22°C. Additional heating with solar thermal energy does not introduce additional energy below the pinch temperature, where it would only lead to an additional cooling demand. With the possibilities for heat exchanger placement (place, piping length etc.) in this factory and following the placement rules of the pinch theory a possible heat exchanger network is calculated (see figure xxx).

Energy savings-Berglandmilch (Austria).jpg

As can be seen stream 1 in figure above, stream 4 in table xxx needs additional heating. This heating could be done by solar thermal energy.

  • Energy savings:

No information is available.

8. Economic evaluation

  • Economic parameters of the built solar system:

Economic evaluation-Berglandmilch (Austria).jpg

Economic evaluation-Berglandmilch (Austria)2.jpg

Economic evaluation-Berglandmilch (Austria)3.jpg

Literature: Joanneum Research Graz, Austria


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