Flexible utilisation of district heating by means of multi-stage condensation
With district heating turbines, the turbine steam is, as a rule, condensed directly after the turbine in a heating condenser. In this application, a large working area is demanded of the turbine both in terms of thermal capacity and operating temperatures on the network side.
These turbines are deployed in the provision of district heating both in vacuum (low flow temperature in the district heating network) and in pressure modes (high flow temperatures).
Apart from the fulfilment of specific requirements we have developed an engineering concept whereby the energy gain is significantly improved by utilising multi-stage condensation.