Absorption heat exchangers

Absorption heat exchangers are used to actively reduce the return flow temperature in large district heating transfer stations. In this application, the return flow of the primary network can become up to 20 Kelvin colder than that of a heat exchanger, thus allowing new supply areas to be connected to primary district heating networks despite performance bottlenecks.

The cold return flow enables the use of waste heat sources with temperatures below 60°C in the return or directly in the heating plant.

The StepsAhead absorption heat exchangers are designed such that they can operate at all required temperature ranges. The temperatures in the secondary network can reach up to 120°C.

Specification (example)

District heating network

Flow: 120°C
Return: 36°C

Customer or subnetwork

Flow: 71°C
Return: 55°C

District heating network
Flow: 120°C
Return: 36°C

Customer or subnetwork
Flow: 71°C
Return: 55°C

Absorption heat exchangers