The paper presents simulation results of the cascade control of a continuous stirred tank reactor. The control is performed in primary and secondary control-loops where the primary controlled output of the reactor is the concentration of a desired reaction product, and, the secondary output is the reactant temperature. A common control input is the coolant flow rate. The controller in the prima...

In recent years, there has been a growing interest in bioreactors, which utilise immobilised enzymes and cells in order to improve the bioprocess productivity. In fact, there are many specific advantages of the immobilised systems in comparison with the more conventional systems, in which the bio-agents are suspended freely (cells) or dissolved in a bulk aqueous medium (enzymes): • high cell de...

The paper presents a method for H-infinity controller design for a system affected by parametric uncertainty. The proposed method is based on minimising infinity norm of sensitivity function of the nominal system. The design approach is verified by robust stabilization and control of an unstable and perturbed continuous stirred tank reactor (CSTR) with hydrolysis of Propylene Glycol. The contro...

The paper deals with the cascade control of a tubular chemical reactor. The control is performed in the primary and secondary control-loops. A gain of the primary discrete nonlinear P controller consists of two parts. The first nonlinear part is determined on the basis of simulated or measured steady-state characteristics of the reactor, the second part is selectable. The controller in the seco...

The fusion program in the Karlsruhe Institute of Technology (KIT) leads R&D DEMO helium-cooled pebble bed (HCPB) breeding blanket within work package (WPBB) Eurofusion Consortium European Union (EU). A new design HCPB breeder zone, with a layout inspired by nuclear reactor fuel rod arrangement, was developed recently and called fuel-breeder pin concept. In addition, mock-up (MU) this design...

Abstract A demonstration plant designed for methanol synthesis with steel mill gases was operated continuously the first time over a period of 5 weeks. The reactor represents single tube typical dimensions an industrial bundle boiling water cooling jacket and is incorporated into full loop unreacted gases. Temperature profile along axis gas composition in recycle stream are measured online. In ...

Transient behavior in nuclear reactors is important accidents and with reactivity control systems that are driven by thermal feedback. Here, we describe a transient finite difference model for pin cell system. The fidelity of the shown validation against thermocouple measurements CABRI BI1 experiment Safety Analysis System-Sodium Fast Reactor experiment. In experiment, sodium-cooled mixed oxide...

Abstract Nuclear power has special safety requirements and must be generated on the premise of nuclear safety. It is necessary to forecast abnormal situation system equipment as soon possible, so we can control accident beforehand prevent risk caused by failure accident. At present, pre-accident method in plant mainly relies subjective experience personnel. In contrast, intelligent forecasting ...

Background: Recently, the surgical methods are used in patients with anterior cruciate ligament rupture and have been associated with successful results. There are different results in the term of using of the surgical methods for anterior cruciate ligament that often is associated with some complications such as infection, static laxity, remaining the pain, need to recurrence surgery, and limi...