Berglandmilch (Austria)

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1. Case study or built example

2. Industry Sector

Dairy

3. Industrial application

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

4. Process description

Process flowsheet:

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

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).