Renewable energy sources are essential paths towards sustainable development and CO2 emission reduction. For example, the European Union has set the target of achieving 22% of electricity generation from renewable sources by 2010. However, the extensive use of this energy source is being avoided by some technical problems as fouling and slagging in the surfaces of boiler heat exchangers. Althou...

Relational transducers mapping sequences of input relations to sequences of output relations are proposed for high-level declarative specifications of business models. See [404] for a related class of ASM-transducers. Contains the problem description for the steam boiler control competition [7] and 22 proposed solutions obtained using the major known formal methods, with text and complete docum...

This paper presents an approach that uses supervisor architecture structure with the intention to reach flexibility of the combustion process control during the boiler functioning on the example of the high qualified Power AG. For this case, adaptive distributed control system with the supervisor on top is invented, on the middle layer with load distribution on burners and maintenance of optima...

In Formal methods for industrial applications: specifying and programming the steam boiler control,

Recommendations for Boilers up to 250 psig Ca 0.40 2.50 Na. 0.46 2.17 CaO. 0.56 1. 79 NaOH. 0.80 1. 25 Ca(HC031. . 1. 62 0.617 Na 2C03 1. 06 0.943 CaSO. 1. 36 0.735 NaHC03 1. 68 0.60 CaCl2 1.11 0.901 Na 2SO•. 1.42 0.704 Mg . 0.24 4.17 NaCI 1.17 0.855 MgO 0.40 2.48 CO2 , 0.44 2.27 MgC03 • 0.84 1.19 C03 0.60 1. 67 Mg(HC03) 2 ' 1. 46 0.685 HC03 1. 22 0.82 MgSO•. 1. 20 0.833 SO•. 0.96 1.04 MgCl2 0....

The control effect of steam pressure is one of the most important factors influencing stability in chain type boiler. Aimed at the problem that the control of steam pressure is restricted by many factors, a kind of fuzzy neural network (FNN) is presented in this paper. The controller has the advantage of self-adapting, self-learning and tuning on-line. In simulation, this system exerts stably, ...

The objective of life extending control (LEC), also known as damage mitigating control, is to design a controller to achieve a good tradeoff between structural durability and dynamic performance in a system. In this paper, continuum fatigue damage theory for a boiler system is discussed. To reduce the accumulated damage, a variance constrained model predictive control (VCMPC) problem is develop...

This paper gives a framework of supervisory control of boiler drum level system. The design and implementation of this process is done by the LabVIEW software. The data of the process variables Level from the boiler system need to be logged in a database for further analysis and supervisory control. A LabVIEW based data logging and supervisory control program simulates the process and the gener...

A black liquor recovery boiler has two main functions. On one hand, it generates steam from the heat energy liberated upon combustion of the organic constituents of black liquor burned in the boiler, whereby the recovery boiler serves as a steam boiler. On the other hand, the chemicals from pulp digesting sulphur and sodium are recovered from the black liquor, the recovery boiler then serving a...