SCADA at heart of carbon neutral CHP project
Austrian city Lienz provides its citizens and businesses with cost-efficient environmentally friendly heating and electricity from wood and solar energy. At the heart of the network is a modular boiler control system.
Austrian city Lienz is home to one of the most cost efficient and environmentally friendly district heating networks in the Tirol region.
Currently around 50 km long, the network will eventually be extended an additional 7km. At that point, approximately 950 properties will be supplied throughout the year with environmentally friendly, low-cost heating from a combination of wood and solar energy. Its final capacity will provide a heating output of 74 million kilowatt hours.
To provide this, two thermal power stations will primarily generate the required energy from biomass furnaces and solar power. A buffer storage with a capacity of 400 m3 intercepts load peaks from the district heating network and enables smooth operation of the biomass heating systems. The additional oil boiler is used only to provide support at periods of particularly high demand and supplies less than five per cent of the total thermal energy during normal operation.
The system was installed by Kohlbach, a company with a long track record in the supply of CHP and district heating technology in the region.
The district heating system was delivered in two stages. The Lienz 1 heating power station uses: two biomass boiler systems: a hot water boiler with a rated power of 7 MW and a thermal oil boiler with a rated power of 6MW; one organic Rankine cycle (ORC) process that supplies 1 MW of rated electrical power; one solar plant with 630 m_ surface area of collectors; one exhaust gas purification plant, carried out in a first stage by a multi-cyclone downstream of each biomass furnace and in the second stage by a shared exhaust gas purification plant including exhaust gas condensation; and two oil boilers.
Source and more info: engineerlive