Modernization & heat pump integration in the Saalfelden heating plant

THERMA FLEX DEMO PROJECT: Increased efficiency of the existing biomass boiler

This demo is part of the lead-project ThermaFLEX that has been completed successfully. Download the final report.

In order to increase the share of renewable energy in the Saalfelden district heating network, work is currently underway on a comprehensive modernization of the Saalfelden heating plant. The modernization is planned in two stages. The essential components of expansion stage 1 to increase the efficiency of the existing biomass boiler are:

  • Adaptations to the existing biomass firing system, including increased performance of flue gas condensation and improved exhaust gas cleaning
  • Construction of a storage tank (150 m³)
  • Renewal of the control technology / control
  • Renewal of the thermal hydraulics

In expansion stage 2, the energy efficiency of the system is to be further increased through the implementation of an innovative heat pump concept. By using a heat pump, the heat recovery from the flue gas can be significantly increased again.

In parallel to the two stages of modernization, work is being carried out on optimizing and expanding the district heating network.

>> to the ThermaFLEX lead project


Thomas Herbst
T: 004367686828916

Project key facts

01.11.2020 - 31.10.2022

funding program
Umweltförderung im Inland

Project type
Demonstration project

Project budget
3.000.000 €

Project management

Salzburg AG für Energie, Verkehr und Telekommunikation

The following model solutions are being developed in the Modernization & heat pump integration in the Saalfelden heating plant project: