The test stand for biomass boiler systems (Figure 1) is equipped in accordance with the European test standard ÖNORM EN 303-5 and designed for a useful heat output of up to 100 kW. In conjunction with a 6m³ buffer storage tank with stratified charging unit, a complete energy and mass balance can be created on the test stand, which can then be used to determine the efficiency using the direct or indirect method. The test stand has a modular design so that different types of boilers and buffer storage tanks can be measured and operation is possible all year round.
The measurement data continuously recorded on the test stand is visualised in a LabView® test environment (Figure 2) and can be exported for evaluation. The LabView® environment also enables direct data exchange with the boiler control system, e.g. via Modbus protocol. This means that the boiler test bench can also be used to develop or optimise control concepts for combustion control.
A central component of the boiler test bench is a comprehensive flue gas analysis system with which the main gaseous and particulate emissions can be analysed:
- Oxygen O2 (paramagnetism)
- Carbon monoxide CO (non-dispersive infrared spectrometer)
- Carbon dioxide CO2 (non-dispersive infrared spectrometer)
- Methane CH4 (Non-dispersive infrared spectrometer)
- Total hydrocarbons CxHy (Flame ionisation detector)
- Sulphur dioxide SO2 (UV resonance absorption spectrometer)
- Nitrogen monoxide NO (UV resonance absorption spectrometer)
- Nitrogen dioxide NO2 (UV resonance absorption spectrometer)
- Water vapour (process hygrometer)
- Various trace gases (FTIR spectroscopy)
- Dust emissions (cascade impactor)
LOCATION:
Pinkafeld
CONTACT PERSON:
Prof.(FH) DI DI(FH) Jürgen Krail
juergen.krail@fh-burgenland.at
