The aim of this work is to evaluate the IR technique for mass flow measurement of
biomass fuel and design and evaluation of two IR sensors that are cheap, simple and
easy to handle. The results presented here show that the IR sensors have similar signal
behaviour in the case of the pulverized biomass as that of coal. Further analyses of the
signal from the IR sensors in this installation show that the measured IR signal has a
maximum with the measured boiler load. For the loads greater than 65 MW the IRsensor
signal shows the “anti-correlation” with the load. A signal filtering scheme and a
model was developed that can be used for signal handling and calibration of the IR
sensors. The information on the mass flow from the designed IR sensors expected to be
cost effective as the IR sensor can provide the same quality of information on the mass
flow as the FTIR system that is been tested on both pulverized fuel of biomass and coal.
The major benefit of this system in comparison to a commercial mass flow monitoring
system is the cost, ease of handling and application. Further recommendation is given
for continuation of the tests to enable identification of parameters that enhance signal
quality of the IR sensors in an installation and also test of a scheme for calibration of an
IR sensor system.
| Place of Publication | Stockholm |
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| Publisher | Värmeforsk Service AB |
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| Number of pages | 49 |
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| Publication status | Published - 2012 |
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