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Steam jet chilling plants

Steam jet chilling plants and cooling systems

Steam jet chilling plants and cooling systems
Steam jet chilling plants can be ideally utilised whenever large chilling capacities have to be easily realised. Vacuum cooling plants operate according to the principal of flash evaporation. The cooling of liquids to generate chilled water at temperature ranges down to the freezing point is particularly economical and cost-effective, when preferably unused exhaust, residual or excess steam is available.

Steam jet chilling plants provide:

An environment-friendly operation by means of water as refrigerant
High operational safety
Minimum maintenance
An easy assembly, as well as a good handling since the plants basically do not require rotating and moving components
Usually, conventional chilling plants are equipped with electrically driven mechanical compressors. 
Such plants show obvious disadvantages as they generate additional energy costs, increased maintenance of rotating components and therefore higher investments for safe operation.

Our steam jet chilling plants provide an environment-friendly alternative at reasonable costs compared with traditional chilling plants. If sufficient motive steam is available, the advantages of our plants are convincing. Our chilling plants are particularly efficient when processes provide excess or residual steam. This means high efficiency for the entire process, and, at the same time, good chilling performance at high availability and low need of maintenance.

Function: Using flash evaporation

Our steam jet chilling plants take advantage of the principle of flash evaporation. The liquid to be chilled is being passed through a flash evaporator. The pressure in the evaporator is below the steam pressure of the liquid.

As a result of the flash evaporation process, part of the liquid evaporates (flash steam); evaporation heat is deducted from the heat capacity of the liquid. This causes the liquid to cool down to the boiling point of the respective evaporation pressure (vacuum). The application is only limited by the freezing point of the liquid to be cooled.

The resulting flash steam will be sucked off by a steam jet vacuum ejector, then compressed and finally condensed in a downstream condenser. The pressure level of the condenser is defined by the temperature of the used cooling medium. This condenser has to be vented until atmospheric pressure is reached. For this process our steam jet vacuum ejectors or liquid ring vacuum pumps have proven to be ideal.
Using flash evaporation


  • basically no rotating and moving components
  • simple and good handling, even with large volume flows and chilling performances
  • environment-friendly as no special refrigerants are required (water serves as refrigerant)
  • summertime peak load can be covered by the difference in demand of heating steam between summer and winter
  • high operational safety
  • low maintenance
  • simple set-up and easy handling
  • long service life
  • corrosive media can be dealt with flexibility (use of various successfully tested materials from plant building)
  • electrical energy feed is not necessary (except for transporting chilled water and cooling water)
  • we have many years of experience in the development, design, manufacturing, commissioning and maintenance of steam jet chilling plants

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