District heating substation

Heat transfer station of a swimming pool EVN heat with an output of 700 kW

The heat transfer station is a technical device that transfers heat from a district heating network in the customer's heat distribution system and thereby sets the desired by the customer in its distribution system supply temperature.

Heat transfer stations to the primary side with:

  • Steam
  • Hot water or
  • Heating water (< 105 ° C)

Be acted upon.

Components of a heat transfer station

Composed of:

  • Primary-side strainer
  • Heat exchanger
  • Control valve if necessary with flow limiters and / or differential pressure
  • Calorimeter
  • Secondary-side strainer
  • If necessary safety valve
  • Hauptabsperreinrichtungen
  • Manometerabsperrhahn with pressure gauge
  • Thermowells with thermometer
  • Regulator
  • Outdoor temperature sensor
  • If necessary, hot water temperature sensor

Tasks of the heat transfer station,

  • The measurement of thermal reference of the customer through the calorimeter, which is ( so the water side the district heating network ) built mostly in the primary circuit
  • The rules of the primary-side differential pressure
  • The limitation of the flow rate of the district heating water on its contract performance
  • The hydraulic separation of the district heating system for home installation with heat exchanger
  • The limitation of the secondary return temperature by a secondary circuit (customer circuit) mounted temperature sensor, which automatically withdraws the heat output or adjusts the flow temperature of the customer higher than the outside temperature is dependent on the flow temperature
  • In hot water systems, the limitation of the flow temperature by a safety thermostat
  • The preparation of household hot water for the customer

Diagram of a heat transfer station

Scheme of the heat transfer station of the bio-heat Amstetten West ( PDF, 37 kB)

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