District heating substation

A district heating substation is a component in a district heating system that connects the main network to a building's own heating system.^[1][2][3]

A district heating substation with a thermal capacity of 700 kW. This unit isolates the water circuit of the district heating system from the customer's central heating system.

A district heating substation in a residential neighborhood with a thermal capacity of 300 kW. Two components of the heat meter are visible: the metering electronics unit on the right (white/blue box), and the ultrasonic flow meter in the center (bronze tube).

Parts

The station normally has one or more of the following parts:^{[citation needed]}

• Heat exchanger - to split primary and secondary side of the system
• Control valve - to regulate the flow through the heat exchanger
• Heat meter - to measure energy consumption and allocate costs
• Strainer - to remove particles that could block heat exchanger or control valve
• Shutdown valve - to stop the flow on primary side in case of service or emergency
• Differential pressure controller - to balance the network and improve working conditions of control valve
• Temperature controller - to control temperature on secondary side by regulating the flow on primary side
• Temperature sensor - to sense flow and return temperatures required for temperature control

Additional parts

In addition, a district heating substation may also include:

• Pump
• Manometer
• Safety valve
• Non-return valve

See also

• Cold district heating
• Drammen Heat Pump