Many of the laboratory facilities have been equipped with axial turbines at LUT. Most of the design has been based on literature handbooks like Traupel, Ainley & Mathieson, Soderberg etc.
2-stage ORC turbine, 30 kW
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This turbine was designed by emeritus professor Per-Holger Sahlberg and tested in 1992.
It was part of the charging device of the submersible Mir-boat and tested at 5 km depth.
The first stage (left) is a supersonic and the design efficiency was 80 %. |
1-stage RBC turbines, 10 kW and 2 kW
These turbines were designed in the Reversed Gas Turbine Project.
The most left turbine (1993) produced 10 kW, the outer diameter was 150 mm, the speed was 20 000 rpm and the mass flow was 0.4 kg/s. The turbine was measured separately and its efficiency was 86 %.
The left turbine (1994) produced 2 kW, the outer diameter was 45 mm, the speed was 87 300 rpm and the mass flow was 0.06 kg/s. The turbine efficiency was measured to be 72 %.
The flow direction in both turbines is from left to right. The first wheels are the nozzles and the second the rotors.
4-stage steam turbine, 1000 kW
The laboratory is currently making a comprehensive design of a 4-stage steam turbine, which will be connected to a Bio fuel boiler. The project is targeted to have the test facility running in 2006.