ATAC i system - Energimyndigheten

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candidate, the measurement strategy is evaluated in detail and a final strategy will be decided
as soon as possible. The preliminary plan is to build the unit in the laboratory of the
department and that it will be built by a company with previous experience from construction
of similar units. A preliminary design has been developed and discussed with that company.
Figure 1 gives an overall scheme of the unit and Figure 2 shows the outline of the furnace,
which will have adjustable cooling and be equipped by measurement ports. Downstream the
furnace, the flue gas is cooled in two heat exchangers, one being a flue gas condenser, given
in Figure 3. Although there is a preliminary design, a more detailed study of the measurement
strategy is carried out at present and this may change the strategy and/or the design of the
unit. Also, part of the measurements may be performed on other test units in cooperation with
another institute (contacts have been initiated with CANMET in Canada). The measurements
will mainly consist of heat flux and radiation measurements using heat flux probes and
radiation pyrometers.
In parallel to the dimensioning of the test rig, the following steps are planned (work has been
initiated):
• Calculations of expected results with respect to radiation, heat transfer and soot
formation at high levels of oxygen, carbon dioxide and moisture.
• Evaluation of measurement methods (heat flux probes, radiation pyrometers, so called
“IFRF” probe)
• Choice of measurement method(s)
• Establishment of detailed measurement plan
• Possible modifications of the measurement plan
The aim is to start building the test-rig as soon as possible.
O 2
fuel
gas-fired furnace
high temp
flue-gas heat exchanger
low temp
flue-gas heat exchanger
Figure 1. Principal scheme of the test rig for O2/CO2 experiments.