A survey by the Australian Transport Safety Bureau found:Many passengers might be concerned that the high recirculation rates of cabin air on modern aircraft poses a particular risk for infection.
For a better operation, lower recirculation rate and relative higher coal input are recommended under high-load conditions, whereas higher recirculation rate and relative lower coal input are appropriate for low-load conditions.
Also, the higher was the recirculation rate, the higher was the permeate flux through membrane.
It is found that these blends are capable of running under partially premixed combustion at low and medium loads and they produce near zero soot emissions when using high exhaust gas recirculation rate.
Higher recirculation flow-rates resulted in higher VFA production too.
The higher oxygen consumption with lower recirculation rate could be compensated by a lower furnace stoichiometry.
In view of that, the techno-economics can be improved if the CO2 capture plant is designed to operate using the CESAR-1 absorption technology due to a reduction in the regeneration energy and the solvent recirculation rate (considering its higher CO2 net capacity).
The new concept of Controlled Staging with Non-stoichiometric Burners (CSNB) makes a reduction of the recirculation rate possible without inadmissible high flame temperatures.
Non-spherical particles generally have higher friction, and the resulting decrease in recirculation rate of particles along the crater walls generally produces a narrower but deeper crater relative to spheres of the same size.
Results from case study showed that under the same recirculation rate, the reheat temperature increases higher and the net coal consumption decreases more in the improved recirculation system than those in the traditional recirculation system.
Control loops for exhaust gas recirculation rate or boost-pressure strongly rely on underlying actuator position control with a high predefined performance level.
