The article presents the adaptation of the setpoint calculation algorithm with limitation using the double cross method, known from the fuel-air regulation systems, in the system for mixing two sorts of lime, enabling the start of the process line without additional start-up procedures. The authors modified the standard double cross algorithm in order to enable the start of the system without special start-up procedures, while maintaining all the features of the algorithm. The results of the tests of the modified algorithm in the lime milling and mixing system are also presented.
Radial fans with efficiency regulation during their work using variational geometry of the rotor have not been used in industries until now, despite the fact that this is the most economically effective regulation method. One of the causes for this was the lack of a convenient method of transferring drive to moving blades of the fan. This paper presents an innovative method of transferring drive on the blades using a differential planetary gear. The construction is described, and a strength calculation methodology and tests confirming correctness of work are shown as well. The presented solution can become a new standard in the construction of energy fans.
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